heads

[95rayburn]

What's the pro's and con's of 15 degree brodix heads compaired to 23 degree head's

[perfconn]

Will make a ton more power.Must change pistons,intake,headers and rockers,probably need to change cam.

[sj valley dave]

It's why Cup cars got away from 23* heads in the early 80's, went to 18* stuff, then canted valve 11*/8* SB2.2 and now the R07 with 14*/10* angles...shallower valve angles have a smaller chamber and make tons more power...no comparison

[4bangerhotrod]

i dont know anyone that has run the brodix 15* head, does anyone know what kind of hp an torque numbers these heads are capable of. and what kind of torque curve are they pretty smooth heads.

[perfconn]

Lots of late models run them.HP and torque capabilities depends on how big the engine is,how good the heads and intake are ported and how good your engine builder is.

[go2fast]

you are looking about 775 hp and 620 tq with a 404 ci engine

[95rayburn]

Why would u have to change can? Currently in have a 650 lift solid roller cam

[perfconn]

Because the 15* heads will flow so much better than the 23* heads.You may need new lifters also that have offset intakes if you don't already have them.

[go2fast]

with the 15 deg heads you go to about a .780 lift on the in and .750 lift on ex 1.75 in rocker and a 1.7 rocker on the ex cam with a .442 lobs

[perfconn]

Those are not the important numbers on having the right camshaft.I can use those numbers and you will have an engine that won't be anything but a pig off the corners or use those same numbers and it will blow the tires off.There is more to to the right cam than lift.

[go2fast]

Well the cam we used is 260 in and 268 ex on a 55mm core and a 107 center line put in @ 103 with .903 lifters will make it about a 261/269 peek tork 5500 rpm peek hp about 7400 rpm trun it about 8300