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01-29-2011, 04:58 PM #1
- Join Date
- Jan 2011
1997 chevy C/K 5.7L loss of power at highway speeds
I just bought this truck and gave the usual tune up with pugs, wires, cap and rotor. I also did the oil change. At highway speeds it seems to struggle a bit to keep up around 75 miles an hour. I have not been faster than that. I am worried about pulliing my boat because of this. I was wondering how to fix this and make my new truck "to me" run like a champ and pull like a 350. Thanks for you opinions on this.
01-29-2011, 06:33 PM #2
- Join Date
- Sep 2010
- Far West, Oregon USA,
- Blog Entries
When you did your tune up did you check the compression or do a cylinder leak down test? If not I would do this next before anything else, as 1 weak cylinder will underpower your truck. This is a very basic check & one of the most important because comp. is the foundation of your engine output.1988 Chevy C-3500 2wd (no pic)
350 c.i. 5.7 L Stock Block, 4 Bolt Mains
L-31 Vortec Heads, Edelbrock Cam & Intake,
Holley 650, Flowtech Headers, Magnaflow exh.
Jet Trans 700R4, B&M Ratchet, 4:10 gears,
3" susp. lift kit "shadetree"
No rev limiter, No speed limiter lol
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