I already did a search about this stuff, i got some mixed opinions.. As u can see from my sig, i am installing a LT1/T56 into my iroc, it will have all boltons, 224/236 cam, no AC, no AIR, it will be tuned by PCM4less.. I will be on the bump as for my fuel system from what i understand from other posts so i want to upgrade the TB. some on here like BBK, some like Holley and i've read about problems with both.. Others used the AS&M and i haven't seen anything bad about it so i think i'm gonna go for that one. Now they have a 52mm & 54mm, which should i get?, Nitrous is in the equation (100-150shot) and the main-MAIN reason for upgrading.. Next is the injectors, i think 30lbs would be the correct ones, i did the equation for them and i came up with 29.xx, could have screwed up but i think i did it right, any thoughts?

Mike

 

I'd suggest going with the AS&M 52MM unless you are go with juice or boost (then maybe a 58MM).

The 54MM would be nice, but the 52 will be cheaper if you get a stocker on the cheap to use as a core.

The intake is already sized for a 52MM also.

I did this and found that the AS&M bolted right up with no problems. Nice chrome cover too.JMHO

 

You should upgrade the fuel pump as well.Dont want it to lean out on ya.I would go with the 52mm.30 lbs injecters sound good too.

 

Sweet sounds cool to me.. AS&M and 30lb injectors are it!!

 

30lbers should be good mike, what will also influence your choice will be whether or not it will be a dry or wet N20 system.

Like mentioned above if you go 54mm youll have to port your intake some.