Years ago ( like the late 70's ) I was loaned a spread bore block heads to match the longer small block and the funny looking crank not to mention the strange camshaft because the bores relocation changed everything as compared to the GM V-8 small block but it was just shy of 600 cu in. I put it in my Chevelle for a summer and then it had to be returned to those guys in the Romulus area. What a freak of natural small block genealogy as I have always known it.
AWESOME IDEA with excellent applications, and unthought of benefit to some of us! I don't understand the whine - bags on your channel... getting hung up on what they think that matters....lmao! Thank you for the time and coverage, excellent viewing!!! KUDO'S!!!!!
I see 4.6” bore spacing and I remember that CFE developed a new 4.6” bore spacing motor that was capable of 600ci. Insane when you think about the OAL is only an inch or so longer than the 4.5” bore space motor.
Call it what you want, it is NOT a small block Chevy. It's a custom all-new engine with design elements derived from (mostly) the nearly 70-year-old SBC.
It's a symmetrical head motor which obviously is based on a small block FORD design most likely the Cleveland. The LS is based on the Windsor design a offshoot of the 427 Ford high-rise motor. Sadly I hate to burst their bubble. But everything Chevy uses in race thing today from Nascar to drag racing is all based on FORD designs. ALL YOUR MOUNTAIN MOTORS THEY LABEL AT CHEVY ARE BOSS 429 DESIGNS AND HEMI DESIGNS. THE BOSS 429 DESIGN WORKS BETTER. THE HIGHER YOU GO UP IN CUBIC INCH ON THE BOSS THE BETTER IT WORKS. THE CRESCENT SHAPE COMBUSTION CHAMBER IS WHAT CREATES MASSIVE POWER. BECAUSE IT SLOWS THE AIR FUEL MIXTURE UP UNLIKE THE HEMI WHICH IS A STRAIGHT SHOT ACROSS THAT ALLOWS THE AIR FUEL TO FLOW TOO QUICKLY NOT BURNING EFFICIENTLY. THE CRESCENT SHAPE SLOWS THE AIR FUEL MIXTURE UP ENOUGH TO LET IT BURN EFFICIENTLY CREATING MORE POWER.
@@Wardaddy1124 I SEE FROM YOUR RESPONSE YOU HAVE BEEN HURT BY THE TRUTH. SO HERE IS MORE HISTORY FOR YOU. THE 351 CLEVELAND TOTALLY AND SINGLE HANDEDLY CHANGED THE FACE OF PROSTOCK DRAG RACING FOREVER. THE 351 CLEVELAND DOMINATED PROSTOCK TO THE POINT WHERE THEY MADE THE FORD'S CARRY 250LBS MORE WEIGHT AND THEY STILL WON. THE NHRA THEN LET THE CHEVY'S/CHRYSLER/ETC REMOVE MORE WEIGHT AND THE FORD'S ONCE AGAIN STILL WON. THE EMINANT DOOM OF THE SMALL BLOCK CHEVY WAS RIGHT AROUND THE CORNER AND THE NIGHTMARE GM FEARED WOULD SOON BECOME A REALITY OF PROSTOCK BEING TOTALLY POWERED BY THE 351 CLEVELAND MOTORS. THEN IN 1983 THE NHRA (ANOTHER DIVISION OF GM) HAD THEIR HENCHMEN IN THE NHRA MANDATED THE 500ci RULE AS A PLOY TO STOP FORD FROM DOMINATING PROSTOCK ANYMORE. SO THE NHRA ALLOWS GM ALONG WITH WARREN JOHNSON TO BUILD A NEW ENGINE CALLED "THE DRCE - DRAG RACE COMPETITION ENGINE". SO GM TAKES THE OLDSMOBILE BLOCK AND STUFFS IT LIKE A THANKSGIVING DAY TURKEY WITH A CAM AND ROTATING ASSEMBLY FROM A BIG BLOCK CHEVY AND THEN WARREN JOHNSON HAS A BIG PAIR OF FORD CLEVELAND HEADS MADE FOR IT. SO SINCE 1983 TO PRESENT WHAT CHEVY HAS BEEN WINNING WITH IS A FORD CLEVELAND ENGINE. THIS IS THE REASON FORD DOESN'T GET INVOLVED IN PROSTOCK RACING. BECAUSE IT IS ALREADY FORD POWERED. AT THIS POINT BOB GLIDDEN GOES OUT AND GETS HIMSELF A BOSS 429 ENGINE AND SLAUGHTERS ALL OF THEM. EVERY YEAR AS GM/CHEVY GOT FASTER WITH THERE GENERIC FORD CLEVELAND ENGINE. BOB GLIDDEN WOULD SLIGHTLY PORT THE BOSS HEADS KEEPING HIMSELF AHEAD OF THE CHEVY'S AND THE REST OF THEM INCLUDING THE HEMI'S. IT REACHED THE POINT WHERE FORD AND BOB GLIDDEN WERE GETTING READY TO CAST A NEW FORD BOSS HEAD AND MOST LIKELY THEY WOULD HAVE BEEN NAMED "THE SUPER BOSS HEADS". AT THIS POINT THE CHEATERS THE NHRA TO PUT CHEVY AND KEEP CHEVY IN THE WINNERS CIRCLE TOLD FORD AND BOB GLIDDEN THAT THEY HAD TO MAKE A 1000 PAIRS OF THESE HEADS AVAILABLE TO THE PUBLIC IF THEY WANTED TO RACE. THE NHRA KNEW THE BOSS MOTORS WERE MADE IN LIMITED NUMBERS AND A MARKET FOR THESE HEADS DIDN'T EXIST. OBVIOUSLY THEY KNEW FORD WASN'T GOING TO SPEND COUNTLESS MILLIONS TO PRODUCE HEADS FOR A MOTOR THAT NO LONGER EXISTED. FORD AND BOB GLIDDEN THEN TOLD THE NHRA TO GO "F" THEMSELVES. THIS IS HOW FORD'S DOMINANCE IN PROSTOCK CAME TO AN END. IN 1980 BOB GLIDDEN DID SWITCH OVER TO CHRYSLER AND WON BEATING THE FORD'S ONLY FOR ONE REASON. LIKE THE CHEVY'S THE CHRYSLERS ALSO BENEFITTED FROM THE WEIGHT BREAK OF NOT HAVING TO CARRY 250 MORE POUNDS AND ALSO THE NHRA ALLOWING THEM TO TAKE OFF EVEN MORE WEIGHT ON TOP OF THE WEIGHT FORD WAS CARRING. THE FORD CLEVELAND MOTOR WAS THE ULTIMATE IN POLY ANGLE HEAD DESIGN. IT IS SO STATE OF THE ART THAT DOSN'T GEY ANY BETTER. IT IS HARD TO IMPROVE ON IT INITIAL DESIGN. TODAY YOUR SYMMETRICAL RACE MOTORS LABEDED AS CHEVY ARE ACTUALLY FORD CLEVELAND DESIGNS. YOUR MOUNTAIN MOTORS LABELED AS CHEVY ARE FORD BOSS 429 DESIGNS. THE ADVANTAGE OF THE BOSS HAS OVER THE HEMI LIES IN ITS CRESENT SHAPE COMBUSTION CHAMBER. THE CRESENT SHAPE, ANGLES THE FLOW ALIGNMENT BETWEEN THE INTAKE AND EXHAUST OFF SETTING THE VALVE RELATIONSHIP BETWEEN THE INTAKE AND EXHAUST SO IT IS NOT STRAIGHT. WHAT THIS DOES IS SLOW DOWN THE FUEL/AIR MIXTURE GIVING IT ENOUGH TIME TO COMPLETELY BURN FOR THE MOST EFFICIENT MAXIMUM BURN FOR MAXIMUM POWER. ON THE OTHER HAND THE HEMI DESIGN BEING STRAIGHT THROUGH ACROSS, DOESN'T ALLOW THE AIR/FUEL MIXTURE ENOUGH TIME TO FULLY BURN CREATING INEFFICIENCIES. THE CLEVELAND IS OF A SIMILAR DESIGN TO THE BOSS AND THE REASON THE CHEVY "DRCE" DOMINATES OVER THE HEMI FOR MANY YEARS IN PROSTOCK.
4.600 small block......"chevy". LOL Talk about marketing. Now THAT'S funny considering there isn't a SINGLE similarity in design. Buy 1 and carve any name you'd like into the valve cover and that's what it is.
If we are splitting hairs.. no sbc ever came with a 4.030 bore and 3.750 stroke. Never came with 18/15° heads either.. is a 383 with 18° heads not a small block?
@@donaldpfau4284 but we call the other ones big block chevys dude... You're on this then youre on bore spacing. Are you saying if its not factory designed then it doesnt count? Does that throw out engines with splayed mains? How about tall deck blocks?
@@donaldpfau4284 I dont think you understand it. The bore space doesnt define the motor. You might as well say you cant use aftermarket blocks or its not *whatever brand engine youre building*
Errrrrr, a Cleveland. While good power is available you have to throw away most of the engine. Starting with the US Ford heads which are useless. A heavy engine with lousy oiling and average cooling. And .030 stops the overbore. And yes I do race one so I do know! And yes I have raced and built Chevs as well which for motorsport are a far better thing. And always will be
@@donaldpfau4284 stock bore space. We have big block chevys aftermarket with 5.3 bore spacing. Its whatever dude, but you can see a clear similarity in geometry between the two.
If it's 4.600 bore spacing, it's not a small block Chevy. End of story. Get a Ford FE, or a Pontiac, or an Oldsmobile. They're all around 4.62" bore spacing.
Nice what is sbc the timing cover transmission pattern and engine mounts lol i suppose you could still call it a small block though unlke noonan at 4.9bs
The reason the 4.9" was created was so they could spread the lifters to make way for larger intake runners and of course larger bore size, but never heard it called a small block, its a 4.900" hemi to me just as the Janis 4.900". Why they call it a sbc is because they started with the base sbc design and modified as much as they could, and when you have a CNC, why not change things to help with power, reliability, and ease of maintenance when this thing is gonna be pulled apart at a track every so often when a tune up goes wrong or a part lets go? At least you can get a bell housing for it since it is the most widely used pattern in racing lol.
Hey fellas ..for what your going to empty out your pocket for why not just start up the Big inch engines...ladder ...period...not everyone is Andy driving a smb block.blue Camaro pro mod
I picked up a 4.5 bore space billet block that you guys had designed the block and proline had refreshend it got it on a good deal
Years ago ( like the late 70's ) I was loaned a spread bore block heads to match the longer small block and the funny looking crank not to mention the strange camshaft because the bores relocation changed everything as compared to the GM V-8 small block but it was just shy of 600 cu in. I put it in my Chevelle for a summer and then it had to be returned to those guys in the Romulus area. What a freak of natural small block genealogy as I have always known it.
WOW!!! 1,200 Hp from NA!!!! Thanks for sharing!!!!
Chuck Lawrence has N/A engines making 2000 HP from 800 CI
AWESOME IDEA with excellent applications, and unthought of benefit to some of us! I don't understand the whine - bags on your channel... getting hung up on what they think that matters....lmao!
Thank you for the time and coverage, excellent viewing!!! KUDO'S!!!!!
Thanks Seth! We're glad you like the content.
I see 4.6” bore spacing and I remember that CFE developed a new 4.6” bore spacing motor that was capable of 600ci. Insane when you think about the OAL is only an inch or so longer than the 4.5” bore space motor.
Yes not a small block Chevy. 4.6 is larger than many big blocks.
Larger than what big blocks? Standard bore spacing of a BBC is 4.84, BBF I think is 4.9?
@@donaldpfau4284 well if you have about 3/4 ‘’ it will fit where a small block Chevy would go ! Kind of jealous already…!
Comes a point where you are no longer a "small block", a Ford FE engine has a 4.650 bore spacing and most were called "big block" such as the 427.
Call it what you want, it is NOT a small block Chevy. It's a custom all-new engine with design elements derived from (mostly) the nearly 70-year-old SBC.
Amen. And their are a lot of jerks on here that don't get that.
@@donaldpfau4284 There*. Nobody has been a jerk bud.
@@jubjub905 Bullcrap
It's a symmetrical head motor which obviously is based on a small block FORD design most likely the Cleveland. The LS is based on the Windsor design a offshoot of the 427 Ford high-rise motor. Sadly I hate to burst their bubble. But everything Chevy uses in race thing today from Nascar to drag racing is all based on FORD designs. ALL YOUR MOUNTAIN MOTORS THEY LABEL AT CHEVY ARE BOSS 429 DESIGNS AND HEMI DESIGNS. THE BOSS 429 DESIGN WORKS BETTER. THE HIGHER YOU GO UP IN CUBIC INCH ON THE BOSS THE BETTER IT WORKS. THE CRESCENT SHAPE COMBUSTION CHAMBER IS WHAT CREATES MASSIVE POWER. BECAUSE IT SLOWS THE AIR FUEL MIXTURE UP UNLIKE THE HEMI WHICH IS A STRAIGHT SHOT ACROSS THAT ALLOWS THE AIR FUEL TO FLOW TOO QUICKLY NOT BURNING EFFICIENTLY. THE CRESCENT SHAPE SLOWS THE AIR FUEL MIXTURE UP ENOUGH TO LET IT BURN EFFICIENTLY CREATING MORE POWER.
@@Wardaddy1124 I SEE FROM YOUR RESPONSE YOU HAVE BEEN HURT BY THE TRUTH. SO HERE IS MORE HISTORY FOR YOU. THE 351 CLEVELAND TOTALLY AND SINGLE HANDEDLY CHANGED THE FACE OF PROSTOCK DRAG RACING FOREVER. THE 351 CLEVELAND DOMINATED PROSTOCK TO THE POINT WHERE THEY MADE THE FORD'S CARRY 250LBS MORE WEIGHT AND THEY STILL WON. THE NHRA THEN LET THE CHEVY'S/CHRYSLER/ETC REMOVE MORE WEIGHT AND THE FORD'S ONCE AGAIN STILL WON. THE EMINANT DOOM OF THE SMALL BLOCK CHEVY WAS RIGHT AROUND THE CORNER AND THE NIGHTMARE GM FEARED WOULD SOON BECOME A REALITY OF PROSTOCK BEING TOTALLY POWERED BY THE 351 CLEVELAND MOTORS. THEN IN 1983 THE NHRA (ANOTHER DIVISION OF GM) HAD THEIR HENCHMEN IN THE NHRA MANDATED THE 500ci RULE AS A PLOY TO STOP FORD FROM DOMINATING PROSTOCK ANYMORE. SO THE NHRA ALLOWS GM ALONG WITH WARREN JOHNSON TO BUILD A NEW ENGINE CALLED "THE DRCE - DRAG RACE COMPETITION ENGINE". SO GM TAKES THE OLDSMOBILE BLOCK AND STUFFS IT LIKE A THANKSGIVING DAY TURKEY WITH A CAM AND ROTATING ASSEMBLY FROM A BIG BLOCK CHEVY AND THEN WARREN JOHNSON HAS A BIG PAIR OF FORD CLEVELAND HEADS MADE FOR IT. SO SINCE 1983 TO PRESENT WHAT CHEVY HAS BEEN WINNING WITH IS A FORD CLEVELAND ENGINE. THIS IS THE REASON FORD DOESN'T GET INVOLVED IN PROSTOCK RACING. BECAUSE IT IS ALREADY FORD POWERED. AT THIS POINT BOB GLIDDEN GOES OUT AND GETS HIMSELF A BOSS 429 ENGINE AND SLAUGHTERS ALL OF THEM. EVERY YEAR AS GM/CHEVY GOT FASTER WITH THERE GENERIC FORD CLEVELAND ENGINE. BOB GLIDDEN WOULD SLIGHTLY PORT THE BOSS HEADS KEEPING HIMSELF AHEAD OF THE CHEVY'S AND THE REST OF THEM INCLUDING THE HEMI'S. IT REACHED THE POINT WHERE FORD AND BOB GLIDDEN WERE GETTING READY TO CAST A NEW FORD BOSS HEAD AND MOST LIKELY THEY WOULD HAVE BEEN NAMED "THE SUPER BOSS HEADS". AT THIS POINT THE CHEATERS THE NHRA TO PUT CHEVY AND KEEP CHEVY IN THE WINNERS CIRCLE TOLD FORD AND BOB GLIDDEN THAT THEY HAD TO MAKE A 1000 PAIRS OF THESE HEADS AVAILABLE TO THE PUBLIC IF THEY WANTED TO RACE. THE NHRA KNEW THE BOSS MOTORS WERE MADE IN LIMITED NUMBERS AND A MARKET FOR THESE HEADS DIDN'T EXIST. OBVIOUSLY THEY KNEW FORD WASN'T GOING TO SPEND COUNTLESS MILLIONS TO PRODUCE HEADS FOR A MOTOR THAT NO LONGER EXISTED. FORD AND BOB GLIDDEN THEN TOLD THE NHRA TO GO "F" THEMSELVES. THIS IS HOW FORD'S DOMINANCE IN PROSTOCK CAME TO AN END. IN 1980 BOB GLIDDEN DID SWITCH OVER TO CHRYSLER AND WON BEATING THE FORD'S ONLY FOR ONE REASON. LIKE THE CHEVY'S THE CHRYSLERS ALSO BENEFITTED FROM THE WEIGHT BREAK OF NOT HAVING TO CARRY 250 MORE POUNDS AND ALSO THE NHRA ALLOWING THEM TO TAKE OFF EVEN MORE WEIGHT ON TOP OF THE WEIGHT FORD WAS CARRING. THE FORD CLEVELAND MOTOR WAS THE ULTIMATE IN POLY ANGLE HEAD DESIGN. IT IS SO STATE OF THE ART THAT DOSN'T GEY ANY BETTER. IT IS HARD TO IMPROVE ON IT INITIAL DESIGN. TODAY YOUR SYMMETRICAL RACE MOTORS LABEDED AS CHEVY ARE ACTUALLY FORD CLEVELAND DESIGNS. YOUR MOUNTAIN MOTORS LABELED AS CHEVY ARE FORD BOSS 429 DESIGNS. THE ADVANTAGE OF THE BOSS HAS OVER THE HEMI LIES IN ITS CRESENT SHAPE COMBUSTION CHAMBER. THE CRESENT SHAPE, ANGLES THE FLOW ALIGNMENT BETWEEN THE INTAKE AND EXHAUST OFF SETTING THE VALVE RELATIONSHIP BETWEEN THE INTAKE AND EXHAUST SO IT IS NOT STRAIGHT. WHAT THIS DOES IS SLOW DOWN THE FUEL/AIR MIXTURE GIVING IT ENOUGH TIME TO COMPLETELY BURN FOR THE MOST EFFICIENT MAXIMUM BURN FOR MAXIMUM POWER. ON THE OTHER HAND THE HEMI DESIGN BEING STRAIGHT THROUGH ACROSS, DOESN'T ALLOW THE AIR/FUEL MIXTURE ENOUGH TIME TO FULLY BURN CREATING INEFFICIENCIES. THE CLEVELAND IS OF A SIMILAR DESIGN TO THE BOSS AND THE REASON THE CHEVY "DRCE" DOMINATES OVER THE HEMI FOR MANY YEARS IN PROSTOCK.
It would be really interesting to see a detuned version that could go in a street/driver car.
It's a billett block. Has no cooling water jackets. Only for drag racing.
In a boosted application, these “small blocks” can make 4000hp crank.
Billet main cap for stock sbc web casing
I'm sure you can buy a house for what it costs.
COOL!
4.600 small block......"chevy". LOL Talk about marketing.
Now THAT'S funny considering there isn't a SINGLE similarity in design. Buy 1 and carve any name you'd like into the valve cover and that's what it is.
I mean, I see the resemblance in geometry.
@@jubjub905 - Get to the back of the class, mozon!
@@alanhardman2447 wow
It's best called a "Medium" block meant for racing.
I haven't even gotten to the specs and details of the engine but I want one
I am going to buy this setup and go whip dunk master ass with it 100,000%
No SBC ever came with a 4.600 bore nevermind a 4.250 bore. The correct term is a mod motor not sbc.
Bore spacing not bore size. 4.6 inches center to center of bore
@@bowsertownes wait that detail slipped by me lol. Your right on that but I know the bore is huge regardless.
@@HorsepowerHeadquarters454 yes huge for small block "criteria " lol
I guess why not when you got 5.3 brad blocks and the likes
If we are splitting hairs.. no sbc ever came with a 4.030 bore and 3.750 stroke. Never came with 18/15° heads either.. is a 383 with 18° heads not a small block?
@@bowsertownes And a small block Chevy is 4.4 so again not a small block Chevy. 4.6 is larger than many big blocks.
There were actual sbc in the sixties built to 580ci.
4.6 bore center? Does that even constitute a small block any more??? That leaves room for slugs the size of tree stumps.
When mammoth 'big' blocks have 5.3 bores, I think its ok.
@@jubjub905 But it not OK to call it a small block Chevy.
@@donaldpfau4284 but we call the other ones big block chevys dude... You're on this then youre on bore spacing. Are you saying if its not factory designed then it doesnt count? Does that throw out engines with splayed mains? How about tall deck blocks?
@@jubjub905 4.6" bore spacing is larger than many big blocks. Stop dreaming
@@donaldpfau4284 I dont think you understand it. The bore space doesnt define the motor. You might as well say you cant use aftermarket blocks or its not *whatever brand engine youre building*
All that engine for a sbc to compete with a Cleveland - psh!!!
Uh oh!!! Them’s fightin’ words!!!
Lol yeah right.
Errrrrr, a Cleveland. While good power is available you have to throw away most of the engine. Starting with the US Ford heads which are useless.
A heavy engine with lousy oiling and average cooling. And .030 stops the overbore.
And yes I do race one so I do know!
And yes I have raced and built Chevs as well which for motorsport are a far better thing. And always will be
It in now world is a small block Chevy. A small block Chevy is 4.4
@@donaldpfau4284 stock bore space. We have big block chevys aftermarket with 5.3 bore spacing. Its whatever dude, but you can see a clear similarity in geometry between the two.
There is no replacement for displacement
at that bore space its no longer a small block
Yeah how true.
I guess with all the 5+ bore space stuff available today this is a small block
NO IT'S NOT in any world. 4.6 is larger than many big blocks
If it's 4.600 bore spacing, it's not a small block Chevy. End of story. Get a Ford FE, or a Pontiac, or an Oldsmobile. They're all around 4.62" bore spacing.
Nice what is sbc the timing cover transmission pattern and engine mounts lol i suppose you could still call it a small block though unlke noonan at 4.9bs
The reason the 4.9" was created was so they could spread the lifters to make way for larger intake runners and of course larger bore size, but never heard it called a small block, its a 4.900" hemi to me just as the Janis 4.900". Why they call it a sbc is because they started with the base sbc design and modified as much as they could, and when you have a CNC, why not change things to help with power, reliability, and ease of maintenance when this thing is gonna be pulled apart at a track every so often when a tune up goes wrong or a part lets go? At least you can get a bell housing for it since it is the most widely used pattern in racing lol.
Small block my ass 😂😭
Since when is a 4.600 bore engine a small block. 😜
Sale me the ls engine that’s behind you
Where’s Greg Jones?
And it’s a small block what?
Hey fellas ..for what your going to empty out your pocket for why not just start up the Big inch engines...ladder ...period...not everyone is Andy driving a smb block.blue Camaro pro mod
It’s badass but too bad it’s not a legit small block :(
Liar 4.6" bore spacing is not in any world a small block
Makes small block criteria. Shares geometry with the small block. They up scaled big blocks, why couldnt you do the same with a small block?
Bore center spacing is 4.600 not bore size
Learn how to read, and listen. Bore spacing. Bore spacing. Bore spacing
@@b.c4066 AND A SMALL BLOCK CHEVY IS 4.4 . So again in no world is this a small block Chevy. So pull your own head out of were the sun doesn't shine.
@@jubjub905 Bullcrap. Small block Chevy is 4.4
Nothing chevy about it
In a boosted application, these “small blocks” can make 4000hp crank.