Engine Block Testing

[Donald A.]

Re: Engine Block Testing

Great observation!

Steve M. Did they tell you which cylinder it was and if so is it on the pass side with the stamp. Maybe you get lucky and it's on driver side and perhaps they can surface that side only.

Which brings up my next question, surely they could knock down the sleeve without decking the block and can do it on one side only???

[Steve G.]

Re: Engine Block Testing

Great observation!

Steve M. Did they tell you which cylinder it was and if so is it on the pass side with the stamp. Maybe you get lucky and it's on driver side and perhaps they can surface that side only.

Which brings up my next question, surely they could knock down the sleeve without decking the block and can do it on one side only???

I'm sure dressing the liner without hitting the deck can be done, but the result is not going to be as good as cutting it with the deck around it. How close are you to the deck without hitting it? Probably close enough to not have a problem, but certainly not the best that can be done.

Yes, one bank can be done without the other, but that also is a result that is less than perfect in that you have altered combustion chamber volume on one side and not the other. Would you notice it running in a street engine? Probably not.

I don't have any answers in the matter, just raising the topic that should be discussed with the machine shop.

Steve

[David K.]

Re: Engine Block Testing

Don't mean to hijack the thread but this question is directed to Duke and hope he sees it. Duke, I have a 65 coupe 327-365 that the engine is original to the car. Externally engine is stone stock and as far as I know the internals are stock too. The motor runs great, but I will be pulling it out in the next few weeks and taking apart to fix a rear main seal leak as well as stripping paint from block ETC. Car was body offed 10 years ago but prior owner let the engine compartment get away from him and it does not meet my standards. My question refers to post #43 above. I have heard you talk about the weak rods on the pre 66 327's. Does my motor have these weak rods? Because if so this will be an execellent time to replace while the engine is down.
Thanks for yuor guidance.

Dave

[Duke W.]

Re: Engine Block Testing

Yes, your '65 has the weak first design rods. It's also a candidate for the "327 LT-1" configuration. Search the forum under my handle and what you find here will have links to additional information on the Corvette Forum where you will find all the system engineering information and dyno tests.

Send me an email via the TDB and I'll send you a tech paper on guidelines and special interest items to be aware of when restoring any Corvette engine.

There is an easy way to tell if the engine has ever been opening up. Measure the head gasket thickness with feeler gages as the corners of the block/head interface, and post the data. The OE gasket thickness is unique to the gaskets installed at Flint, and I'm not aware that a same gasket thickness has been available from either GM or the aftermarket since about the time your car was built.

Duke