i was planning on doing a buildup over this winter to put a set of turbos on my car!!

ive got an edeblorck performer intake, q jet(quite modified) .470 lift cam, ported heads 8:1 compression!!

now, what size of turbos would i need and what kind of car are they from. i would be building the header/ exhaust/ intake/intercooler!

i dont want a screamer that revs to 8000rpm, i want a smaller turbo, that will start to choke out at 5500 or 6000, because my motor wont see anything higher then that! as also i want as little lag as possible!

has anyone on here made a q jet handle boost?

 

Garrett AiResearch T3s seem to work well for small to to meduim sized V8s. My TT IROC uses two T3s off of late 80's Volvos (.42 compressor, .48 exhaust A/R). They are too small for the stock L98 if you are looking for max Hp, but created a low RPM torque monster- 328hp, 467ftlbs. Power band started to drop off above 4500 rpm. A better size turbo would be off ford thunderbird turbo coupes with manual transmissions (T3 with .60 compressor and .63 exhaust A/R). I believe the Garrett turbos are what you should look for (earlier t-birds used smallish IHI turbos).

BTW, A/R stands for area to raduis ratio, which gives an indication of turbo housing size. It is usually cast into the housings. The highr the A/R, the better the flow, and the slower the response (more 'lag'). The .60/.63 A/R T3s will not be too large for your application. There are mustang boys running 10s with 351s and two of these larger T3s.

Hope this helps ya.
Sorry, can't help you with the carb question though.

 

there are mustang guys that have seen 9’s with the 60/63’s

 

spek,
look at the compressor map for
a Garret T70,
that'll give you some idea of what you need.

 

Don't worry about going too large w/ the various OEM T3's. I've got T04E's, at .58ar, and see 5 psi at 2000 rpms, so it's got plenty of low end grunt.