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Old 02-19-2009, 02:47 PM
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byndbad914 byndbad914 is offline
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sounds cool... specs didn't list the rod but it must be pretty short like 6"? Assuming a deck to 9.235" that would leave a 1.185" CH in the piston...

I am not a big fan of really low rod to stroke ratios and a 6" rod on a 4.100" stroke is a 1.46 rod/stroke ratio, which is rather low but nothing completely out of the ordinary (454 BBC are low like that as well). Keep in mind a 347 Ford stroker is typically 1.59 R/S for example.

For a street rod no big deal, just for a guy like me that will maintain them in the 5K-7K rpm band for extended periods on road courses, it is a bit rough on bearings and low compression height pistons to run such a low R/S IMHO. I prefer 1.6 minimum for sustained rpm with V8s of 5K-8K, so if you are considering sustained rpm with your project (don't know cuz it is "secret" and I appreciate that, my next project is secret as well) I would take that into account.

edit - and I state this fully aware of the LS7 having a short tho' higher 1.5 R/S and similar CH... I am just not a fan personally as I have seen engines with those low R/S values knock pistons out of them in race applications and show aggressive bearing wear.

Last edited by byndbad914; 02-19-2009 at 03:09 PM.
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