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73-87 Chevy _ GMC Trucks => Performance => Topic started by: 454c10 on May 26, 2015, 03:45:57 pm
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Ok so my 1986 gmc c10 short bed ran a 15.1 with a stock 454 big block its got headers wieand intake and edelbrock carb i want in the mid 14s with out dumping alot cash i live in higher altitude and its got 2:73 gears posi axle what yall think i could do thats easy????
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3.08 or 3.42 gears
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you will get gains both by taking the choke out of the carb and with ram air.
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I definitely second swapping out the gears.
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rear gears.
what kinda tires you running?
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I got 373s from my uncle and i ran slicks for tires
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Definitely go with a gear swap.Assuming you have a TH400 behind that BB 3,73 might be
a little steep for highway use,depending on what tire you are using.3.08 with a 28 inch
tire had me around 2600 at 70.If you are running a tall tire like 31.50's,you could go to
a wider lower profile tire simulating a gear change.Next I would do a cam swap,biggest
bang for the buck in my opinion
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Will do thanks for your time
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Then nitrous.