Got a few questions about putting some power in my 400, figured I’d tap some experience here. What I’m lookin for is a car that can run a low 13 quarter mile and run on 93 pump gas as it will be driven 3 - 4 days a week. I don’t want to get into the bottom half as it has no need of rebuilding, just not enough power. After the engine is built well, a variable 75 – 150 shot nitrous will probably be in the picture.

Current setup is a 400 with 4X heads, stock intake and carb, generic headers, TH-350 w/ stock stall converter to I’d guess, 2.93 gears. Engine is from some 70 model Pontiac, casting # of 9799914 code YD.

My thoughts were to get a good set of heads ( open to suggestions as to head # and amount of head work ) ported and polished with a set of roller rockers, maybe some roller lifters to, edelbrock performer intake and 750 carb. Also an electric water pump and fan to save some HP.

Edelbrock performer plus cam, read a few things about losing low end power with a cam that has more than 230 at 50. I don’t want a real rough idle, or to loose power on the low end.

B&M shift kit for the TH-350, not to concerned about the trans, when it turns loose I’ll replace with a well built one, stall converter at the same time. Eaton 3.55 posi for the rear, will 3.55’s fit in the same housing as the 2.93? Headers with some hooker comps or super comps, the generics are good nuff for now.

I’m open to suggestions on everything, the only concrete parts are running pump gas and at least a pretty smooth idle. Hoping for about 400 HP all engine. If anything looks unrealistic, feel free to say. This is my first pontiac, so yall might have to spell out a few things. Thanks for your help.