My favorite TPI combo has been a 5.7 Vortec stock block and cam, mildly ported TBI heads, stock 87 TPI unit, and a T56 in my 93 Caprice wagon running a 0411pcm. Completely usable as a reliable daily driver, plenty of power to be fun when you get on it, and the double overdrive and aerodynamics of the wagon body got me 27-32mpg on the highway. Have also used the same engine setup but stroked to a 383 in my 94 Z71 with 4L60E. Best truck engine GM never allowed us to have.
I have a TPI with 180 afr heads … I run a Xm 264 , 211/218 .488 .495 exh with 1.6 rr This combo runs awesome, moves my 92 gta like it should And #24 lbs injectors … along with the custom ebl p4 ecm ….👍👍
TPI would be interesting to see on a Chevy big block and a few different prototypes of the TPI system and setups NA and boosted maybe hit a 1000 in torque or more
The Comps cams XFI hydraulic roller grind with 202°/212° at .050" with .550"/.546" in./ex. lift with the called for 1.6:1 rockers on a 113° LSA would work great in a TPI sbc. Maybe a set of sbc 1.7:1 rockers to get the lift up a bit more would make it a bit better. Trade the duration at .050" for lift to fill the cylinders was my thinking when I choose that cam. I have this cam in a sbc 383 and absolutely love it, not a TPI engine though. It does have the Weiand version of the RPM Airgap dual plane intake topped with a Holley 850 double pumper. No carb spacer and the divider is all the way across on the intake. So each side gets 425 CFM. Had to run a 10.5 power valve to make it run right because the vacuum is at 22 hg at idle. They don't make an 11 power valve is why it has a 10.5 one. The engine is backed by a 700R4 and a 3.07 in a 12 bolt rear. The car is 4,600 lbs with me in it and runs 13.0s in the QM at 101 mph. The 60 ft times are in the high 1.8s. The advertised RPM range of the above mentioned cam is idle to 5,000 RPM but keeps pulling to 6,000. Probably would pull a bit higher if I had the right valve springs in it? The valves seem to start floating at 6,000 RPM. Why hasn't anyone tried this cam? Instead people keep going higher with the duration at .050".🤷 If you can't make it rev higher, why add more duration, why not get more lift? The heads on my 383 are the old Patriot Performance 195 with 2.02"/1.60" valves with the flat tappet springs that came with them. Static is at 9.6:1 and runs just fine on 87 octane with a 180° thermostat. I top it off with 93 premium right before I run it on the track just in case. With a set of those CNC Promaxx heads that flow 300 intake cfm at .500" lift would be the ticket on a TPI with the mentioned cam, wouldn't even need the 1.7:1 rockers. But probably would need a bit of help to make the intake flow a bit better so it's not as big of a choke point as a totally factory intake would be.😎👍
Anyone re: Comps cams XFI hydraulic roller grind with 202°/212° at .050" with .550"/.546" in./ex. lift with the called for 1.6:1 rockers on a 113° LSA , on a stock TPI or would it only work for better heads & intake ?
@@chrispompano It'll work but to know if you'll gain power you need to know what the heads flow. If the max flow is around .500" lift and the factory lift is lower then it should show an increase in power. Not sure how much though, the cam prices are ridiculous now so not sure in this scenario the juice would be worth the squeeze? I would guess around 20 HP gain plus or minus? Maybe more because this grind has been around for a while so it might even of been developed for the TPI?🤷 There is a Texas regrind cam company on the Bay of e that might be able to grind a factory cam core with these specs for a few hundred less if you would like to try one? Just take the lift and divide it by 1.6 then multiply the answer by 1.5 and tell them that is the lift you want. Then you just use 1.6:1 rockers. That way they won't be grinding a copy of someone else's cam.😉 They might even have something very close on the shelf because they have a bunch of them ready to ship already? I bought one about 5 years ago and it was really nice, looked like brand new. The price of them have increased though since then, I think I paid 159 back then. I think they're around 90 bucks more now but still hundreds less than the Comp though.😎👍
@@chrispompano Not sure just know prices aren't what they used to be.🤷 So I gave you a more budget option if you want to try it so you're not out as much if it doesn't make much of a difference.🤔😎👍
@@itseithergonnaworkoritaint7852 Sure wish DV would start a cam consulting business! Give him all your motor #'s & he sends you grind #'s or a special anodized fancy looking cryo/esp treated ect. & signed by DV himself / NASCAR 150+hp cam & a plaque that it mounts on to make a table lamp out of!!!!! 😂Then when he really retires, these things can fetch big prices at the on line auction shopping!🤔 That'll p.o. all those cam companies now owned by hedge fund investors gouging for profits! Of course, ill probably retire long before he does, & at 50, in bad health.🤕💀👻
Questions/suggestions for other videos. How much HP do ignition systems like ICE and MSD make on a given engine combo - Are they worth the money? And maybe a video econo grind cams - like how fuel efficient can the average guys V8 be and what parts does he need to get that economy out of it.
Love your videos Richard! Trying to figure the cam out for my 406. Love the tire frying low end. I have a TPIS big mouth intake, (have you ever tested a big mouth) TPIS big runners and a ported plenum with 10:1 compression, 1-3/4" headers and flowmaster exhaust. looking at a Howards roller 219/225 525/525 lift 272/278 duration @ .050, 108 centerline, Tech says rpm range of the cam is 1500-5600 rpm. Going to use 180 cc Dart, Pro Maxx, or AFR aluminum heads. What do you think of that combo? Would 190 cc heads be better or would that move the torque curve up? What kind of hp would you guess the engine is going to make? Thanks and keep up the great work!!!
@@richardholdener1727 I have checked out the mega test and I think my setup did pretty respectable in the testing. Man you have a ton of great stuff out there! I've decided to stick with the TPIS setup, for that original look and the low end street manners. I believe the 406 with the AFR 190's on it should make an honest 375-400 flywheel hp. Do you think of the Howards cam I'm looking at will do a good job, or would you recommend a different one for a 406? Thanks!!
To bad you couldn't come up with a variable runner length intake like Porsha did on the flat 6 motor they have with it. This varied the length and made the power band really wide so it had the best of all world's as far as power produced. If you could use runners that crossed threw each other and you could slide all 4 runners longer and shorter via an arm that connected all 4 on each side then have them two rods that run each 4 runners hook together to a single actuator that would vary runners based on RPM and not throttle!
How about a lt1 hot cam, 60 overbore 350, 197 runner aluminum heads, about. 10 to 1 compression and the stock tpi from 1989, i have this stuff laying around?
Would David Vizards Cam Program give any insight into a better spec'd cam or verify the factory cams as being adequate for the stock configuration? Maybe it can give us a Magic Cam , that us TPI guys seek out from the same guy who sold Jack his bean-stalk beans! 😂 .....maybe the o.e. spec'd the cam correctly for all the airflow thru a stock motor. Seems like that GrumpyVette guy forum, has all the accurate flow numbers for the stock TPI motors to plug into Vizards cam-program. Probably those o.e. flow numbers are well known by now & distributed among the entire community over all these years, but he always posts & refers to them.
My favorite TPI combo has been a 5.7 Vortec stock block and cam, mildly ported TBI heads, stock 87 TPI unit, and a T56 in my 93 Caprice wagon running a 0411pcm. Completely usable as a reliable daily driver, plenty of power to be fun when you get on it, and the double overdrive and aerodynamics of the wagon body got me 27-32mpg on the highway.
Have also used the same engine setup but stroked to a 383 in my 94 Z71 with 4L60E. Best truck engine GM never allowed us to have.
I have a TPI with 180 afr heads … I run a Xm 264 , 211/218 .488 .495 exh with 1.6 rr
This combo runs awesome, moves my 92 gta like it should
And #24 lbs injectors … along with the custom ebl p4 ecm ….👍👍
I always loved the tpi had a 224/230 with a 214 lsa drove well and made good power
TPI would be interesting to see on a Chevy big block and a few different prototypes of the TPI system and setups NA and boosted maybe hit a 1000 in torque or more
The Comps cams XFI hydraulic roller grind with 202°/212° at .050" with .550"/.546" in./ex. lift with the called for 1.6:1 rockers on a 113° LSA would work great in a TPI sbc. Maybe a set of sbc 1.7:1 rockers to get the lift up a bit more would make it a bit better. Trade the duration at .050" for lift to fill the cylinders was my thinking when I choose that cam.
I have this cam in a sbc 383 and absolutely love it, not a TPI engine though. It does have the Weiand version of the RPM Airgap dual plane intake topped with a Holley 850 double pumper. No carb spacer and the divider is all the way across on the intake. So each side gets 425 CFM.
Had to run a 10.5 power valve to make it run right because the vacuum is at 22 hg at idle. They don't make an 11 power valve is why it has a 10.5 one. The engine is backed by a 700R4 and a 3.07 in a 12 bolt rear. The car is 4,600 lbs with me in it and runs 13.0s in the QM at 101 mph. The 60 ft times are in the high 1.8s.
The advertised RPM range of the above mentioned cam is idle to 5,000 RPM but keeps pulling to 6,000. Probably would pull a bit higher if I had the right valve springs in it? The valves seem to start floating at 6,000 RPM.
Why hasn't anyone tried this cam? Instead people keep going higher with the duration at .050".🤷 If you can't make it rev higher, why add more duration, why not get more lift? The heads on my 383 are the old Patriot Performance 195 with 2.02"/1.60" valves with the flat tappet springs that came with them. Static is at 9.6:1 and runs just fine on 87 octane with a 180° thermostat. I top it off with 93 premium right before I run it on the track just in case.
With a set of those CNC Promaxx heads that flow 300 intake cfm at .500" lift would be the ticket on a TPI with the mentioned cam, wouldn't even need the 1.7:1 rockers. But probably would need a bit of help to make the intake flow a bit better so it's not as big of a choke point as a totally factory intake would be.😎👍
Anyone re: Comps cams XFI hydraulic roller grind with 202°/212° at .050" with .550"/.546" in./ex. lift with the called for 1.6:1 rockers on a 113° LSA , on a stock TPI or would it only work for better heads & intake ?
@@chrispompano
It'll work but to know if you'll gain power you need to know what the heads flow. If the max flow is around .500" lift and the factory lift is lower then it should show an increase in power. Not sure how much though, the cam prices are ridiculous now so not sure in this scenario the juice would be worth the squeeze? I would guess around 20 HP gain plus or minus? Maybe more because this grind has been around for a while so it might even of been developed for the TPI?🤷
There is a Texas regrind cam company on the Bay of e that might be able to grind a factory cam core with these specs for a few hundred less if you would like to try one?
Just take the lift and divide it by 1.6 then multiply the answer by 1.5 and tell them that is the lift you want. Then you just use 1.6:1 rockers. That way they won't be grinding a copy of someone else's cam.😉 They might even have something very close on the shelf because they have a bunch of them ready to ship already?
I bought one about 5 years ago and it was really nice, looked like brand new. The price of them have increased though since then, I think I paid 159 back then. I think they're around 90 bucks more now but still hundreds less than the Comp though.😎👍
@@itseithergonnaworkoritaint7852 Thanks for that. Why did prices increase & loss of blank production? Ripple from the virus...?😷
@@chrispompano
Not sure just know prices aren't what they used to be.🤷 So I gave you a more budget option if you want to try it so you're not out as much if it doesn't make much of a difference.🤔😎👍
@@itseithergonnaworkoritaint7852 Sure wish DV would start a cam consulting business! Give him all your motor #'s & he sends you grind #'s or a special anodized fancy looking cryo/esp treated ect. & signed by DV himself / NASCAR 150+hp cam & a plaque that it mounts on to make a table lamp out of!!!!! 😂Then when he really retires, these things can fetch big prices at the on line auction shopping!🤔
That'll p.o. all those cam companies now owned by hedge fund investors gouging for profits!
Of course, ill probably retire long before he does, & at 50, in bad health.🤕💀👻
Questions/suggestions for other videos. How much HP do ignition systems like ICE and MSD make on a given engine combo - Are they worth the money? And maybe a video econo grind cams - like how fuel efficient can the average guys V8 be and what parts does he need to get that economy out of it.
Love your videos Richard! Trying to figure the cam out for my 406. Love the tire frying low end. I have a TPIS big mouth intake, (have you ever tested a big mouth) TPIS big runners and a ported plenum with 10:1 compression, 1-3/4" headers and flowmaster exhaust. looking at a Howards roller 219/225 525/525 lift 272/278 duration @ .050, 108 centerline, Tech says rpm range of the cam is 1500-5600 rpm. Going to use 180 cc Dart, Pro Maxx, or AFR aluminum heads. What do you think of that combo? Would 190 cc heads be better or would that move the torque curve up? What kind of hp would you guess the engine is going to make? Thanks and keep up the great work!!!
I would get 190or 195 AFRs and I have tested the TPIS stuff-see tune port intake test video
@@richardholdener1727 I have checked out the mega test and I think my setup did pretty respectable in the testing. Man you have a ton of great stuff out there! I've decided to stick with the TPIS setup, for that original look and the low end street manners. I believe the 406 with the AFR 190's on it should make an honest 375-400 flywheel hp. Do you think of the Howards cam I'm looking at will do a good job, or would you recommend a different one for a 406? Thanks!!
To bad you couldn't come up with a variable runner length intake like Porsha did on the flat 6 motor they have with it. This varied the length and made the power band really wide so it had the best of all world's as far as power produced. If you could use runners that crossed threw each other and you could slide all 4 runners longer and shorter via an arm that connected all 4 on each side then have them two rods that run each 4 runners hook together to a single actuator that would vary runners based on RPM and not throttle!
Mazda did sliding trumpets as did many Formula 1 motors before it was outlawed
Will you test a Hellcat blower on an LS engine?
How about a lt1 hot cam, 60 overbore 350, 197 runner aluminum heads, about. 10 to 1 compression and the stock tpi from 1989, i have this stuff laying around?
sounds good
Would David Vizards Cam Program give any insight into a better spec'd cam or verify the factory cams as being adequate for the stock configuration?
Maybe it can give us a Magic Cam , that us TPI guys seek out from the same guy who sold Jack his bean-stalk beans! 😂
.....maybe the o.e. spec'd the cam correctly for all the airflow thru a stock motor. Seems like that GrumpyVette guy forum, has all the accurate flow numbers for the stock TPI motors to plug into Vizards cam-program. Probably those o.e. flow numbers are well known by now & distributed among the entire community over all these years, but he always posts & refers to them.
the stock cam isn't going to make the best hp or torque-but David's Formula for SBCs should work well
What about the 395 cam?
Doesn't a long runner small block Chev like a similar cam to a long runner small block Ford ?
yes
350 TPI is it better than
350 350 HP with a quadrajet