LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Compression Check On Engine Cradle

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Old Nov 1, 2017 | 07:08 AM
  #21  
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Originally Posted by kingtal0n
Its possible to do without a stand- so why are people worried about stands? You have to take the engine off the stand to put it into the car anyways. Its not like the stand is part of the engine. test it before you install it, thats all there is to do


If you crank with no intake just be careful not to suck anything up into the engine. This is a fine way to get full compression. The throttle body on the intake restricts air and will reduce compression if not held open, possibly but rare. That example should explain what putting the intake on the head does- and why intakes affect power peaks and so forth. You are tailoring the behavior of air molecules when you place curves or barriers in their path, those patterns can be formed in frequencies are tied with engine performance.
I think I’m going to try it without the intake.. But looking at my stand I don’t think I can bolt my flywheel up because the stand bolts might get in the way.. Maybe I’ll just sit it on a rug from the engine hoist..
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Old Nov 2, 2017 | 09:14 AM
  #22  
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Intake on or off, in this case wouldn't make a difference.

You want to see balanced numbers, but the number itself in this case is sort of irreverent. If you have a dead cylinder thans 50psi under the others, than you know **** is bad.
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