schmidt69

does this just bolt on to a ls1 engine, i already have a LS6 intake with a corvette tb. dont know the mm of that, how do i find out.

thanks

Tainted

iTrader: (9)

FAST intakes are a direct reaplcment. you canr euse the vette TB if its 78mm or 90mm the FAST intake has those 2 sizes. the 90/90 set up is for big cube inches or some heads/cam cars

RoastEmSS

bolts right on

schmidt69

ok i have the following mods, and i guess i have a ported tb with a zo6 maf

GR stage II heads with comp cams 581 224/228
Yella Terra 1.7
Double Comp Springs
moly/titanium everything
Ls6 intake
Whisper Lid
ported TB

should i get the 78mm or the 90mm or should i just keep the LS6 and save for a forged stroker 383 kit

Tainted

iTrader: (9)

go 90/90 with your mods

GREATWALLTA

you do need to replace the bolts that is holding down the valley cover to shorter ones, because it will be in the way when the intake goes on.