370ci Street Truck. What Turbo?

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Aug 8, 2019 | 08:58 AM

#11

03sierraslt

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From: Western PA

I would just go to a S480 and be done.

Aug 8, 2019 | 09:30 AM

#12

Drizzy

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Quote:

Originally Posted by chris99gmc

I read one your old posts with your Dyno numbers. From what I gathered, you were having issues with getting it tuned in SD mode and had to get it tuned with the MAF. IMO that could easily be the issue with why your power is falling off up top.

Problem was it wouldn’t fail the MAF and go into SD, it
was never tuned with the MAF. Just had to reconnect the MAF to get the truck to start, then unplug it so it’d go into SD mode.

Quote:

Originally Posted by 03sierraslt

I would just go to a S480 and be done.

S480 is the plan. Between the 83x75 1.10ar and 96x88 1.25ar Both VSR units.

Aug 8, 2019 | 10:21 AM

#13

03sierraslt

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From: Western PA

The 96 will be a bit lazy until you get it up to 15psi or so. T6 or T4? What torque converter do you have?

Aug 8, 2019 | 10:50 AM

#14

Drizzy

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Quote:

Originally Posted by 03sierraslt

The 96 will be a bit lazy until you get it up to 15psi or so. T6 or T4? What torque converter do you have?

T4. Circle D 278mm 2800-3000 stall. I only plan on running 12-15psi, so probably not going to benefit much from the larger wheel. Only considered it because I’ll tow a camper with it occasionally. Figured it’d do better keeping temps down.