00Wildcat

Swaping a LQ4 w/Comp 265 highlift cam 4l80e into a 55 chevy and I'm a little up in the air on PCM TB combo. I have an 04 PCM/4l80 harness but no TAC/pedal (which is cheap and easy to find). I also have the stock 75-78mm DBW TB. So the cheapest/easiest is to run the stock tb with a 3 bolt to 4 bolt (maggie has 90mm jtube). How much power will I be sacificing with the smaller tb? This route I can pick up a 90mm car (which one) or 87mm truck (unsure of what works right yet) and an x-Link which as far as I can tell is required.

Anyone done dyno comparisons on upsixing throttle body on 5.3 or 6.0 w/m112 preferably back to back?

AKlowriderZ71

iTrader: (22)

I never dyno'd mine, but it was a very noticable gain. I'm assuming you have a nice free-flowing exhaust system in place already?

00Wildcat

Planned on full 2.5" duals with x-pipe and magnaflows. Maybe bullets also, I want it quiet.

00Wildcat

No drone, fairly quiet

silver-mod-o

iTrader: (15)

Skip the 2.5" system... Do dual 3 or single 4 and have plenty for the future.

TIM Z

iTrader: (12)

Pics of your project!!

Ive been working on my dads 55 all weekend ! I wish he was putting a combo like yours in, but he already has a fresh 355/6-71 blower to stick in, and gonna do an 80e also.

What route are you going for the trans cross memeber?

00Wildcat

mines a complete driver with a 350/350 combo in it now and I wont do the swap until I have every part and I'm 100% ready to swap in. My car has a 3rd nova subframe so nothing that applies to tri 5 chevys applies to mine.

liveaboard74

iTrader: (-1)

Ls1 with my set up right at 30whp. It really made a difference. I've heard the 102's will get up to 35whp.
Ls1 with a mild cam, 90mm tb headers, maggie and meth 556whp 548wtq. 13 psi. Finally got the 3.0 wheel on it last week.. IW 8rib over drive set up to.

nelsonoffroad

ill trade you jtubes i have a 78 mm jtube on my mp112