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Reply to "Boring 351C"

quote:
Originally posted by George P:
Dry sleeves shouldn't be a problem, never heard of a block with them installed failing, I think it prudent to limit any engine with a production block to 450 bhp, 7200 rpm, 8.0:1 dynamic compression ... especially those with sleeves. Keep in mind that a poorly tuned engine will beat on a reciprocating assembly and its support structure worse than anything else.

Example, a former member of the forums did a tune-up on his Pantera's engine. His son installed a new set of plug wires, and crossed a pair of wires. When they started the engine it was running roughly, so the owner took the car out on the road and "floored it" thinking the engine just needed to be "blown out". Well, he blew crank through the oil pan, and left it laying on the road behind the car.

We used to tell people the stock block was OK to 500 bhp, but now that a new heavy duty block is available from T.Meyer Inc, I prefer the lower limit. Anyone wanting to build an engine producing over 450 bhp, revving over 7200 rpm, or with more than 8.0:1 dynamic compression should use the heavy duty block as a foundation. That is what the Buttermore block endeavor (that Tim has brought to fruition) was all about.


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