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Pontiac 400 engine after rebuild

This is engine for my new 1977 Trans Am "Racer". Specs: '73 block with stock type crank (.010), pistons (.030) and rods,'69 heads No. 46 with no mods, stock '69 intake manifold, Summit headers, CompCam 268 HE complete camshaft with stronger valve springs and 1.6 roller rockers.


 


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pontiac 400 engine rebuild
rebuild by v8-domination tholen





389 Pontiac On Simtester
Watch John Edwards as he describes the Simtesting of a 389 Pontiac GTO engine at Costa Mesa R&D Automotive Machine. (949) 631-6376 Be sure to 'Click' and SUBSCRIBE.





Pt 7 & Final 389 Resurrection
Edited on the old machine, as the editor is not up and running yet. Had to start from square one, so the only music you get is intro and out theme with everything in the middle provided by the Internal Combustion Symphony Orchestra featuring the Open Exhaust section. Expect delays to continue. Replaced the board on the hard drive of the editor and it's saved, but still waiting for a power supply to arrive. This older machine likes to crash the program. Don't know what I'll edit next. I have stuff almost 3 years old that I haven't done! Just wanted to get the Whitey and Jimmy Blue projects up to speed. (Which I don't, really)





Boring Pontiac 400 with Van Norman 777 on Bridgeport Mill
Boring a Pontiac 400 with a Van Norman 777 on a Bridgeport Mill





Pontiac 400
The First time my 400 Big Block got started.





Sehr Performance Machine / Randi's 400 Pontiac
Randi came to us with a 400 Pontiac project for his 1968 Firebird. He didn't want to go crazy on the build but he wanted something that would give him performance that is better than original. With that goal in mind Scott did some custom porting on his heads, upgraded his valve train and went with a Custom COMP cam and lifters and aluminum roller rockers. We maintained his complete original rotating assembly but had to re-balance his crankshaft, it had been poorly balanced sometime in the past and was out by 127 grams on one end and 181 grams on the other. A single plane intake with a 780 Quick Fuel carb got it breathing and the fire is lit with a Flamethrower ignition package. Custom cut and fitted 8mm plug wires are standard equipment here at Sehr. Headman custom coated headers will be added at installation time. The results were a satisfying 543.5 Hp @ 5500rpm and torque reading of 519.8 @ 5400rpm. Corrected to sea level the numbers are 577 Hp and 551 Tq with nearly 400 lb of torque at 3500rpm.





Pontiac 400 break in
Number matching engine. Pontiac 400 cid. Break in of camshaft. Formula 1973 with non stock color ( it supposed to be Burma Brown)





PONTIAC 1970 formula 400
1970 formula 400, complete engine rebuilding, YS block, #13 heads, forged rods and pistons, RA3 cam (068), iron intake, home made 1968 Q-JET converted to electric choke, RA4 headers, complete 2,5" Exhaust.





Proformance Unlimiteds Pontiac 400 with 450hp...PowerJection III EFI Unit
http://www.proformanceunlimited.com/ Live run of a Pontiac 400 with a PowerJection III EFI Unit....Proformance Unlimited....There is no other





Bruce engine build pontiac 400 ci engine 6.6 litre
building your engine





Proformance Unlimited's 69 Pontiac GTO 400 Crate Engine Dyno Run
Proformance Unlimiteds Pontiac 400 crate engine live engine run....all of our horsepower is Dyno tested and proven....visit us on the web at www.proformanceunlimited.com or contact us at 800-267-3940





Pontiac 400/461 Stroker Cam Break-In
Pontiac 400 stroked to 461. X-Pipe Spintech Exhaust, Cam Break-In





PONTIAC - stock Pontiac Super Duty 421v8/405hp vs stock Chevy 409v8/409hp on DYNO
WATCH THE VID TO SEE HOW CLOSE THEY Dyno TO THEIR FACTORY 405hp/409hp ratings. Growing up.....Pontiac/Oldsmobile old timers/EXPERTS who taught me most of what I know, often told me Chevy rated their horsepower in a more optimistic way than say Oldsmobile or Pontiac. I've even heard Pontiac rated/tested their engines in a 100 degree room, compared to Chevy in a 60 degree room. These Dyno results seem to reflect that some of what I heard was true. Both of these engines are great, but the results do seem to show that Pontiac was not rating their horsepower worrying if it would cause "songs to be written" about their engines .... like the great song "She's real fine my 409"--(Chevy).





First start after rebuild of my pontiac 400 engine
pontiac 400 engine rebuild , first start after a lot of work ( v8 domination tholen ) with D-Port Ram Air Style Factory Headers and 2.5" Goerlich Xcelerator mufflers from Ram Air Restoration





BEST PONTIAC 400
PONTIAC 400 GETTING DynoED 530 HP





Which car is faster? Which Car is Faster?




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