![mike rovetti](/img/default-banner.jpg)
- 2
- 78 013
mike rovetti
Приєднався 27 бер 2015
1969 PONTIAC GTO JUDGE 500HP 455 BUILD UP...PART 1
A complete performance build up using a 455 Pontiac engine...In a 1969 Pontiac GTO Judge...
Переглядів: 51 216
Відео
1969 PONTIAC GTO JUDGE 500HP 455 BUILD UP...PART 2
Переглядів 27 тис.9 років тому
A complete performance build up using a 455 Pontiac engine...In a 1969 Pontiac GTO Judge...flowbench work, dyno time
Ink you got the l and the d backwards in Edelbrock
Solid! Top KEK! Peace be with you.
Round port 455 HO heads were the best. The #96 were the best D-port heads to use on a 455 build. The outflowed the 6X on both sides and had a smaller chamber- big valves and all the exhaust bolt holes.. Stock Blueprinted bottom-end with #96 heads, an 041 cam and a Quadra-Jet made over 500hp everytime. -and on pump gas.
What is year is the 455 ?
1977 6x heads, how do those compare to the earlier 1967 “670” heads?( what I have )
All right that looks that's a nice looking motor but won't you use the rear end 5 heads if you want to get 450 to 500 horsepower out of it
@James Conley ... "rear end 5 heads' ??? ... RAM AIR 5 heads.
A few things...the rods and crankshaft were made in China. 6x are NOT the best cylinder heads. The casting 66 are actually better, if screw in studs are installed, and mill the heads .065". Ram air 2, 3, 4, 5 heads, and sd421/sd455 heads, are better yet. Cast 16, 62, 670, 31 heads are also better than 6x, but require a custom dished piston. Other than that, good plan.
I would definitely put hardened Exhaust valve seats in these heads to avoid cracking issues Otherwise nice parts pick
Nice choice with the 455 and Butler parts.... great stuff! :-))
Hi Mike it’s Roxy Jason’s wife I’ve been trying to get a hold of you
Have # 62 on my 455 it's 11.1 runs great!!!
should have put on ram air 5 heads and intake
God bless Pontiac
Great package
Sorry man, you need to delete this embarrassing post.
I'm using the Edelbrock d port heads with a 71 455 in my 66 GTO tons of power just boil the tires off
James Davis man Im looking to get a pair for my 67 400 goin into my 79 Grand Prix 💪🏿💪🏿💪🏿💪🏿
Very Nice Job ,Looking Forward To Part 3 !!!
Sad to say, but the guy prolly died. This video is over 4 years old right now.
I was wondering, i have a grand prix 1971 455 200hp, 2 bolt main, 7h4 heads 114cc big valve, 2 barrel with only 80k miles virgin block. Will 1969 62 heads 72cc with 4 barrel intake fit the sleeping giant? Or i do need to add other part to make it work?
Chem Dog, did you every try this setup? Those heads are perfect for 400, but will be wicked high compression on a 455, prob 11 to 1. You want to be more like 80cc chambers to about 100cc on 455 engines.
Well i hab#17 heads. And the velocity they build on my 400 get me more torque off the line.. so basically i beat everyone..after all who race on street passed 60 70 mph
Horesy shit
Can you get domed pistons for it? Those combustion chambers were all unnecessarily large.
Junk these heads and use 96 heads.
The diameter of those exhaust ports on the engine block are impressive.
Cool stuff , I'm running a 1972 455 H.O. , .30 over with old school trw L2394 pistons with 7f6 heads , love these Pontiacs been running them since the mid 70s , wish I would have kept more of the blocks and heads I had , hope it turns out well 👍🏁
help me build mine!
excellent walk through. Someone that knows what hes doing. wheres the rest ?
How much do all those parts cost
the problem with lowering CR by using a big chamber, is it increases the distance from the intake valve to the top of piston at TDC, this reduces the suction effect of the piston on downstroke, and less a/f mixture is pulled into the cylinder on intake stroke. the way to do it is with a flat OHV head or nearly flat, and a dish in the piston, that is optimal. the main reason the RA IV heads work so well is, the valve is .040" closer to the piston top- a slight amount but with dramatic effect.
are they those Chinese forged rods in the video ? I'd pass on those.
so are you using the ferrea f 5141 -8 1710 11/32 valves in these heads ?..I have a set of these 6x 8 heads that I'm going to put on a 69 428. I was told years ago to use big block chevy rocker arm studs on these heads ..thanks
Hey buddy where are you? I'm currently rebuilding a Standard 455, heh I'm learning more as I go along, and your videos are very instructional and straight-forward. Waiting for part 3.
Mike! You still around Mt. View CA?
Where did you go? You said in part 2 you would be right back after installing all the crank bearings. You are doing such a good job with the videos. Hardly no one talks in length about Pontiac motors anymore... Please finish the series.
Probably got busted by Blueprint Engines. They are a massive, highly-automated, performance crate engine builder based in Kearney, NE. All SBC/BBC
Mike, first off a great choice on the heads. I noticed you had the High Performance Pontiac mag. They had a flow tested ALL of the Pontiac heads and the 6x heads were the best of all of the heads. If you are using headers, you will have to drill another exhaust bolt. The intake Torquer is misnamed, the Edelbrock RPMs intake would have been better choice. I'm interested in your choice of cam here.
Baloney, I did all of the flow testing on all of those heads and the 6X heads are no better than any other 2.11 intake, screw-in rocker stud head. Only the combustion chamber size is different
@@brucefulper4204 Spot on Bruce, the 6X is just a small exhaust valve smog head. Never really understood the popularity of that casting.
@@michaelreardon7667 Well, it's a superb casting like so many of the other low Cr. Heads. Has lots of potential. The 1.66 is desirable to way past 650 hp
Great videos! Both part 1 and 2. Is there going to be a part 3??
How much would you sell a similar set of 6x heads for a 69 400
+MrPONCHO467 Hi, I'm going to upload the porting vids this weekend...I got the heads to flow 255 cfm at .500 lift.
Craigs list is where I found a stripped set for 150.00.ebay you can get a complete set.
Get you a set of # 12 or # 13 heades, and ues a cam with a 110 LSA.. and dur. Around 230-235 @ .50, lift around 465-485 , 8 valve relief, for a compression of 9.5: 1 , and go have a Blast
Mike, you are amazing!
Cool Mike, anymore updates?
Very Cool Build Mike, i just found your Channel, will be watching all your videos. Im only a week or so away from firing up my 10.81 400 Roller motor. Exciting stuff!
+Swilling LOL...I was just gonna send you the link to this on your channel! Do the Ponchos find us, or is it the other way around? haha
Ha ha!! too funny.
Wow! This guy knows his stuff. And love the fact he's a King Kong fan. Yeah f#%k that lizard!!!