I want low 12s to high 11s with my tpi motor, but within the next 2years I will be installing a ATI blower with inter-cooler.So my question is whats the largest aluminum head that i can use on my everyday street car? I have some mods already in my sig. everything will be upgraded to match the heads that I select. thanx in advanced.
njdaewoo

 

if all your looking for is 11's, afr 210's, victor jr.'s, and gm fastburns will do the job. also the new e-tec head from edelbrock works well. high 11's and low 12's isn't that difficult with a good combo.

 

high 11's, low 12's is not that difficult...but on TPI?? maybe with the blower....

about 210-215cc is the biggest intake runner you want to put on a street driven 350. chevy's fast burn heads are 210cc intake runners and they came on the zz430 motor...

 

I have a 383. please check out sig. How does the Victor jr. heads flow? are they better than Trick Flow (215cc) high flow heads? If I put this on my stock Tpi system will it at least crank up & run?

 

i'd have to check the flow numbers, but as i recall the victor jr.'s do outflow the trick flow 215's in out of the box form. the fastburn heads are available without buying the zz430. i'm assuming if someone is looking to go high 11's to low 12's they aren't going to use the stock tpi intake set up. the fuel side of it is reasonable, but the air side would need to be altered. anyone running heads that big shouldn't do it with a stock intake.