Re: 77 c10 5.3ls turbo (Dyno numbers)
Good news - Had the truck dyno’d. Running about 12.5 lbs
528hp/501tq
Bad news - it was making some lifter noise before the Dyno. I think one lifter has let go. Will pull the heads and inspect. If lower end looks good probably will upgrade heads/arp head bolts and a couple other things. If it is a piston problem I’ll scrap the 5.3 and build a 6.0 and shoot for 700 hp.
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1977 Chevy C10 SB, Turbo 5.3ls, TH400
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