C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Injector and Compression questions

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Old Nov 25, 2010 | 04:22 PM
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Default Injector and Compression questions

Hello All,

I have a 1989 Corvette. I am going to do a compression test on the engine. (Need to make sure the engine is still good) Does anyone know how much PSI a good 1989 Corvette should have in each cylinder?

Also, I am going to replace all the injectors in the car. My local Kragen has BWD, ACCEL and Delphi injectors.... Anyone have any sugjestions on brands. I can get sets of 8 ACCEL injectors pretty cheap. If someone could tell me correct spray pounds that would be awesome. They have 21lbs 23lbs 24lbs 26lbs 30lbs. I tried looking through the injector thread but I didn't see pound specifics.

Thanks!
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Old Nov 25, 2010 | 09:14 PM
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Good compression in each cylinder should be around 150 PSI. One would expect some variation....perhaps 5 psi.
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Old Nov 26, 2010 | 08:09 AM
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.......... The stock injectors are 22lbs/hour ........... check with Jon at Fuel Injector Connection ..... supporting vendor ... .....
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