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Pontiac 400 idling on dyno right after break in session

A Pontiac 400 bored .030" over so now a 406 with comp cams extreme energy hydraulic cam and lifters, roller timing chain and roller rockers. Lightened and balanced Scat crank. Ignition upgraded to MSD HEI with Accel 8.8 mm sprial core wires. 6X-4 heads ported and port matched to ported factory dual plane intake manifold. Factory 750 CFM Quadrajet reworked by Cliff Ruggles performance.


 


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Pontiac GTO 400 Engine 1967 Dyno Session Motor Test
Completely built stock type Pontiac engine by bakersfieldcrateengine.com This engine made over 400 HP and 500 TQ All stock parts except for the internals





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 HO engine Dyno Test
This was a Dyno Run on my Pontiac Firebird 400 HO engine build and tested by Terry Walter Precision Engines. Pontiac 400 block +.030 Pontiac #16 Heads 2.11/1.77 Forged Piston dished to bring CR down to 9.2 comp XE262H Cam Holley Carb Cast Iron Intake Pontiac Long Branch Headers





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)





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





Part 5 1959 Pontiac 389 1956 GMC Carburetor Rebuild
Getting the carb assembled





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





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





Pontiac Engine Break Down 301 to 455
Facts talk Pontiac Engines 301.303,326,350,400,389,421,455,482





Proformance Unlimited's Pontiac 400...Live engine run
Pontiac 400 built by Proformance Unlimited Live Run http://www.proformanceunlimited.com/ You can view this engine package at the following link: http://www.proformanceunlimited.com/specs/pontiac_400_375tk.html Pontiac 400 with 450 HP engine package with Edelbrock aluminum heads can be custom designed to your specific needs. All engines can be custom painted to match your vehicle at your request. We can outfit your engine with the exclusive March Performance serpentine belt system. We can also assist you in choosing the proper transmission and stall speed converter combination for your vehicle and have it shipped directly to you as your performance crate engine is being built.





1971 camaro with pontiac 400
1971 Camaro with pontiac 400 engine. Comp roller cam, roller, lifters and scorpion roller rockers. 5C heads ported and polished. TH400 with reverse manual valve body. Holley 800cfm double pumper with aluminum intake. This is my newer project that i recently redid the interior on. Leave comments or questions thanx.





Engine detail work
getting the motor all cleaned and freshened up before I get the car primed/painted. I used the VHT 3000 degree header paint on the heads so it won't cook off like the 500 degree pontiac blue. Once again, its just a pontiac 350 studded 2 bolt mains, bored .060 over, forged KB pistons, I-beam rods, Edelbrock performer cam. (.480/.480) 290 degree duration. Q-Jet 800 cfm carb, 6X-4 heads, W-72 intake from a 400, all ARP bolts holding it together internally.





Pontiac Banshee A Longer Look
The Banshee was a vision for what the Firebird could become. Of course, this concept car could never be built exactly, too low on the road and it wouldn't pass the safety and crash tests, but it was exciting. It demonstrated that the problem with GM cars didn't sit on the designers' shoulders. They were more than capable of dreaming up engaging and fun vehicles that would set imaginations on fire.





Pontiac 400/461 Stroker Dyno Run
Pontiac 400/461 Stroker Dyno Run with Spintech X-Pipe and Spintech Sportsman Street Mufflers. 370 HP & 510 Ft Lbs of Torque





Pontiac 400 first start up
First start up of my bored out 400 from 1979 trans am. Now a 406 with comp cams extreme energy hydraulic cam and lifters, roller timing chain and roller rockers. Lightened and balanced Scat crank. Ignition upgraded to MSD HEI with Accel 8.8 mm sprial core wires. 6X-4 heads ported and port matched to ported factory dual plane intake manifold. Factory 750 CFM Quadrajet reworked by Cliff Ruggles performance. Dyno pull to follow




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