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Old 10-08-2002, 07:49 PM
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Post 350 hard starting & won't rev

I have a chevy 350 installed in a 87 Fiero GT, 5-speed. It has an edelbrock performer intake & a Performer series 600cfm carb.

The biggest problem I'm having is that under load, ie driving, it won't rev past 4k rpm. It pulls nice and hard up to around 4k then it won't go any more. Even If I put it in first gear and go WOT it won't rev higher than 4k. I've checked to see if the timing is advancing and it was.

The other problem is when the engine is hot and you let it sit for awhile it cranks forever(5-10 sec)before it will start. When The engine is cold it fire's right up.

Any thoughts or ideas?

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Old 10-08-2002, 08:22 PM
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WHY WOULD YOU???? But anyway it must rip. It sounds like vapor lock. check your fuel pressure cold and then hot. with the engine in back, it may be a heat box back there> Just a suggestion.
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Old 10-09-2002, 10:05 AM
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i have a chevy 350 in my 85 silverado and had the same problem with the motor not turning more than 4k. the first thing is what kind of cam are you
running and do you have any head work. some chevy cams are not meant to pull over 4k and the same applies to their heads. i went with a crane cam and gained 1000 rpms, 1.6 roller rockers(300 rpms), after i get the heads worked probably more than that. hope this helps. Tony
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