Question about 1986 Chevrolet Corvette
Not breaking the bank is the real problem
first cheap mod is in replace the cam shaft with a torque producting cam ( not high lift or long duration as that gets to lumpy motor operation)
that will improve the engine breating with out making it a lumpy operation
next is to get a set of tuned mandrel bent extractors to assist with the better breathing cam
next is a properly balanced exhaust system (an accredited professional exhaust shop for this )
next is a decent carburation system
bigger is not better so don't think that a 750 double pumper will be better than a 55(with vacuum secondares)properly tuned as too much fuel puts out the fire.
the use of a chassis dyno and good speed shop advice will save money here)
next is a good electrical ignition system
prices are not always equal to performance
replace the stock air cleaner with a unit that allows the filter element to breath all around
so far all the items can be found from profession speed shops but try to pick one that has a chasis dyno so that you can gauge the effectiveness of what you have bought rather than just throwing money under the hood
you notice that at this stage I have not mentioned , over bored cyl;inders , increasing the stroke, port and polished , roller cam followers roller .rockers because if you want all of that you need to open the wallet wider and the engine will not be as reliable as it steps into the high performance bracket and that equals more stress on the moving parts
a smooth powerful car that has a good exhaust sound is more attractive that a lumpy loud piece of rubbish, and is more economical and reliable and will probably cost a lot less
shop carefully and use logicic in determining what you want
Posted on May 13, 2017
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Posted on Jan 02, 2017
a timming sensor controls the pulse to the injector , so if the pulse is to high you will need a test on the timming sensor , and if the sensor is good then the sending unit (PCM) needs to be replaced
have you tested the injector?
Posted on Oct 27, 2008
I had the same problem with a 350. I finally took a wooden dowel about 3/8s in diameter, and put it in #1 plug hole and rotated the engine until it firmly engaged the dowel,them checked the timing marks. The mark on the harmonic balancer was a full 2" from coming up on the O pointer. While the engine was in this position, I timed to #1 and the engine fired right up. The problem was the outer ring of the harmonic balancer had slipped and I was constantly timing to a cylinder that was not TDC. I hope this helps. DEB
Posted on May 15, 2009
if it said bank 1 lean, probaly it is an o2 sensor, but if bank 1 and 2 are lean then you have a vacuum leak. a hose or the intake. was there 1 code or more?
Posted on Aug 12, 2009
Testimonial: "It was the intake,Pulled the oil cap off and the car almost shut down and shudders.A 117 dollar part. Thank you :)"
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