id like this thread to be a realistic approach to attaining 400rwhp in a cobra thats still streetable [ie, it can idle for 10 minutes in 100 degree heat and not explode] and doesnt require 8000rpm to make power AND use b heads. think of this as an acedemic exercise and possibly a repository for other people. ive not heard anyone [im sure there are people who have...] whove made 400rwhp n/a on a streetable 4v. 380ish seems to be most common.
i consider myself a car guy and fairly knowledgeable about engines but i admittedly have little experience with a 4v mod motor. my current Cobra is 100% stock down to the oem 1997 plug wires. runs fine.
heres what i think ill need: headwork, no porting, just bowl work, clean up and a really good vavle job. a SRI, 90mm maf, 42lb injectors, cam somewhere in the 230ish range @ 0.050-degreed accordingly, related hardware for cams, 11.5:1 pistons, good forged rod, underdrive pullies [not piggyback], electric water pump, long tubes 1 3/4 to 3"collector, non catted x-pipe. forgot to add, i have easy access to E85 so CR isnt an issue. i wouldnt be afraid to go 12 or even 12.5:1. e85 is 1.5 miles from my house.
for funsies, please dont mention c heads. i know theyd prolly make more but thats not the point. im interested in doing this with b heads...and still be streetable. also, im not 100% against a stroker but id like to avoid it if possible.
thoughts?
i consider myself a car guy and fairly knowledgeable about engines but i admittedly have little experience with a 4v mod motor. my current Cobra is 100% stock down to the oem 1997 plug wires. runs fine.
heres what i think ill need: headwork, no porting, just bowl work, clean up and a really good vavle job. a SRI, 90mm maf, 42lb injectors, cam somewhere in the 230ish range @ 0.050-degreed accordingly, related hardware for cams, 11.5:1 pistons, good forged rod, underdrive pullies [not piggyback], electric water pump, long tubes 1 3/4 to 3"collector, non catted x-pipe. forgot to add, i have easy access to E85 so CR isnt an issue. i wouldnt be afraid to go 12 or even 12.5:1. e85 is 1.5 miles from my house.
for funsies, please dont mention c heads. i know theyd prolly make more but thats not the point. im interested in doing this with b heads...and still be streetable. also, im not 100% against a stroker but id like to avoid it if possible.
thoughts?