5.7 l gmc 1500 1994

Asked by David May 22, 2016 at 03:21 PM about the 1994 GMC Sierra 1500 C1500 SLT Extended Cab SB

Question type: Maintenance & Repair

What heads could i upgrade my 5.7l truck

1 Answer
223,845

Rowefast answered 8 years ago

.202 heads. The ones that are in there are .194 heads. Then a set of headers along with a Holley P/N 502-9 throttle body. Then a chip up-grade.

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