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.
The First time my 400 Big Block got started.
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.
Sehr Performance / 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.
got a set of camel back heads
i managed to get my hands on some camel back heads. down the road i plan on to rebuild and machine the heads, paint them and install it onto medusa.