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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.


 


More Videos...


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.





Tony Bromley's 400 to 460 stroke Pontiac Dyno Pull | QMP Racing
Numbers: 550 torque @ 5800rpm 535hp @ 4000rpm For those of you paying attention and noticed the numbers aren't the same on the screenshot, its because we made another few runs, but didn't tape them. We'll upload a pic soon. QMP Racing is located in Chatsworth, CA Check out our website: www.qmpracing.com Like us: facebook.com/qmpracing Tags: qmp racing quarter mile race car engine motor custom high performance chatsworth California hp horse power torque trq Dyno rpm turbo drag Exhaust run Boost psi dragster raceway nitro Nitrous super Supercharger muscle burnout idle motorsports Mustang cam Ford hydraulic Street pontiac Cars Supra "Drag Racing" Pontiac Shelby Dodge Twin Stock Mazda Ls1 Motorcycle Bike





Pontiac 455 First Dyno Pull Hot Rod Tempest Lunati Voodoo Cam
My Pontiac 455 fresh build. Pro Gram Billet 4 bolt mains, Eagle H Beam Rods, 6095 Lunati Voodoo Cam Valve Lift .527 INT 548 EXH; Duration 284 INT 292 EXH., Pro Form 950 CFM Carb, 1971 Super Duty Round Port HO "197" castings #481768; Fully Ported; 2.11/1.77 valves; Milled .055; 103 cc's; Lazer Valve Springs H-O Racing Enterprises) 1.770-1.785 installed height; 7/16 screw in studs; 11/32 pushrods; Pushrod Guide plate holes elongated for clearance; 1.65 Harlan Sharp Roller Rockers; ARP head Stud Kit., Doug Nash Warrior Intake port matched, JE forged pistons, 10.3:1 compression. 500HP 500 Ft pounds of torque. Built by Blackshear Racing, Brookfield, Oh. Dynoed at Tubs, Austintown, Oh.





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





Part1 1959 Pontiac 389 resurrection for "The Find" 1956 GMC 250 Dually
I HATE PRE-ROLL ADS! YouTube can't seem to get the code right. I've reset the defaults to NO PRE-ROLL ADS 3 times now. Sorry for the pre-rolls. I'm still working on it. Snagged a 1959 Pontiac 389 from an hour or so away. Pig in a poke, really, but they don't get any easier to find as time goes on. The 56 needs a heart transplant, and 389 cubes is the biggest direct bolt-in you can get your hands on! I don't know how many parts there will be. Just trying to get it edited and uploaded! Cubes... Gotta have cubes...





How to modify V8 heads for ARP 7/16 screw in studs for adjustable roller rockers
How to machine for screw in studs 7/16 ,adjustable roller rockers and pushrod guide plates,replacing standard pressed steel rockers and 5/16 bolts,





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.





GTO First Start Up
Having a conversation with Darrel Arvizo, AKA "Slo-Moe", about his sweet GTO build and NOT getting a straight answer out of him on anything. I'm sure that engine puts out over 1000 horse power, who's he tryin to kid... LOL. Anyway, this is what I do know.... The chassis was built by Rob Lindsay at R.J. Fabrication, engine build by Rock & Roll Engineering and NHRA Super Stock Indy winner Bruce Fulper, body work done by Tony "Cricket Fingers" Griffin, C&R Radiator, APS-Racing carb spacer, CCP control arms, MSD Ignition and a lot of hard work by Slo Moe. Hurry up and Git-R-Done!





Pontiac, Wide Open World of Youth 1966
1966 Dealer Announcement film, full line up of Pontiacs including the GTO, LeMans, Grand Prix and Bonneville.





'68 Pontiac Firebird ...Pontiac 400...Built by Proformance Unlimited
http://www.customcrateengines.com/ Live run of a Pontiac 400 engine built by Proformance Unlimited...engine will be run in a '68 Pontiac Firebird You can view this engine package along with available upgrades at the following link: http://www.proformanceunlimited.com/specs/pontiac_400_375tk.html Our staff is available Monday-Friday 8am-5pm to answer any of your engine questions.





1968 Pontiac Firebird Restoration Process
Here is a 10 min video compilation of shots and clips taken during my 4 year restoration of my 1968 Pontiac Firebird.





Sehr Performance Machine / Ryan's 350 Pontiac
Ryan dropped off his 350 Pontiac long block along with a set of 400 Pontiac Ram Air cylinder heads, an Edelbrock intake and his Holley carb. He wanted us to put it together for his '69 Firebird. His engine came to us with blow-by issues from a broken piston. First off the cylinders had to be relieved to clear the valves on the Ram Air heads. The heads were milled to reduce chamber size and valve to block clearance was checked one more time. All of his parts were inspected and magnafluxed to be sure we were starting off with serviceable parts and the clearances were brought back to low side of factory tolerances, a new custom COMP cam and a distributor curve kit were added along with some other touches, the engine was painted Pontiac Blue and bolted to our Dyno. Ryan is very happy with the end results and is looking forward to getting it back in his car and having some fun with it.





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





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)





Sehr Performance Machine / 229 cid V6 for Costa's Repair Lihue, HI
Our customer called all over to find a shop that would do a Chevy 229 V6 for his 1980 Malibu. He had to go 3800 miles to find a shop that was willing. We have really enjoyed the relationship that has developed during the coarse of this build. It's fun to work with someone who gets excited about what their doing. With a lot of custom head work, a custom COMP roller camshaft, and some other trick parts and machine work we were able to develop 474 lbs of torque and 503 horsepower.





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