HTC Community Forums

Rob Pod · 09-25-2018, 12:59 AM

I'm thinking about just staying with my Stock 2006
5.7, instead of swapping a SRT8 6.1 down the road.

84/75 Turbo 6.1:
I was thinking I'd run 80s, 340lph, -8 & -6
6.1 would have been rebuilt with Forged 10:1s
and a slightly better (over Stock SRT8 6.1) Cam

My 5.7 is currently (n will stay) 100% Stock,
Yes I'll swap injectors, n do a Big Turbo Back.
I'm prolly only gonna push like 5 psi to 9 psi.

What Size Fuel Injectors do ProChargers use?

Would 42s flow enough fuel? Stock Lines, Rails,
Pump enough to support 9psi from my lil 84/75?

Ghost03hemi · 09-25-2018, 03:52 AM

You'll need custom tuning. Keith(charged392) can help you out on the tune.

For the stock 5.7 engine turbo or supercharged: Stage II/III srt4 injectors or 80lb injectors(easier tuning), SRT4 2bar map. 78/75 On3 turbo (front mount turbo setup), Air to air intercooler. 180 degree thermostat, Would highly recommend 4.56 gears and a Trutrac posi unit. Sonnex line pressure booster. The gears and line pressure booster will help the 545rfe trans last a little longer. You'll really like the much better acceleration and towing power from the 4.56 gears.

*** Very Important Notes*** Absolutely no overdrive down shifting to wot or you'll be rebuilding the overdrive clutches in the 545rfe trans. It's very weak to say the least..... You will have to look into a better trans in the future... ATS or 46rh are good choices.
NOTE: The ATS trans is expensive and isn't done with it's testing of the ATS Copilot and 545rfe trans. Though the new updated Copilot and 545rfe trans is showing to have the bugs worked out so far.

There hasn't been no long term reliability test on the new updated ATS 545rfe trans and Copilot yet.

***6 to 7psi boost max on stock fuel rails and fuel pump.***