Whats the highest possible flow numbers out of chopped up 241's? Im about to invest in a bigger cube and will undoubtedly go to an aftermarket head but i was just wondering what numbers people have seen. Thanks

 

ttt...

 

Had mine flowed last month, Patriot Ported LS1 heads


THE VALVES ARE 2.02 INTAKE AND 1.6 EXHAUST.
THEY ARE 63.5 C.C. COMB CHAMBERS.

LIFT EX CFM INT CFM

.200 113 131.4
.300 157 186.9
.400 182.1 239.4
.500 204.1 271.6
.550 210.4 280.3

 

If you are going to go with bigger cubes, do not waste your time and money on the LS1/LS6 heads. Get a set of L92 heads. They flow 320ish out of the box untouched. A set of assembled heads run $800ish. For another $1000ish for so, you can get them to flow in 360ish range.

Keith

 

My old set of Absolute Speed 241 heads flowed 306cfm @ .600. Currently making 433rwhp on a buddy's FRC with 228/.58x cam. L92 heads are a good choice, but you will need to go with a new intake and fuel rail. Though with a stroker you will probably be looking at a better intake (such as a FAST) anyway.

 

Just remember that you need a minimum of a 4.000 bore for the L92's to fit.

 

Since he said he was going with bigger cubes, I guess I assumed he would be going with a larger diameter bore You are correct though.

Keith

 

thanks guys i couldnt get a reply on covetteforum so this really helps me out, yeah im coming from a 383 and either and going to a 408 or 418 from texas speed, however it looks like their longblock has everything i need and i guess ill just exchange my pnp 241's, thanks for the help tho guys