1991 Chevrolet S 10 S10 305 Truck Had Four Cyl Made Rpm High Think 410

1991 CHEVROLET S-10
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i have a 1991 S10 with a 305 in it.The truck had a four cyl. in it when it was made my rpm are to high . i think it has 410 in the rearend. I have a 350 trans (3 speed auto) if i change my wheel size to 20 inch.will it help me out a lot also im going to put 373 posi. that i already have.thank you.
Nov 23, 2012 at 9:22 PM
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