Cam and valvetrain longevity....??? low duration high lift...
09-23-2016, 09:03 PM
#481
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I'd be pretty thorough on the measurements, and certainly account for and measure piston rock. When I am putting together an engine, I measure the piston to deck height with a deck bridge and dial indicator after the shortblock is assembled. once those measurments are taken, THEN gaskets are ordered.
IMO, the benefits, do not outweigh the risks of playing with extremely tight quenches, on a bbc, unless you are building an all out competition engine. If the piston is at 0 deck, .027 is playing with fire, even with a steel rod. Staying in the .040-.060 range, is fine for a N/A build, and most forced induction builds.
I would imagine that Bob M, spec'd those gaskets, assuming the blocks were being zero decked. I don't know how anyone would know the specific blocks deck height, without physically measuring, if in fact, the block was anything other than zero deck. Unless they are virgin blocks from world products, but even then?
IMO, the benefits, do not outweigh the risks of playing with extremely tight quenches, on a bbc, unless you are building an all out competition engine. If the piston is at 0 deck, .027 is playing with fire, even with a steel rod. Staying in the .040-.060 range, is fine for a N/A build, and most forced induction builds.
I would imagine that Bob M, spec'd those gaskets, assuming the blocks were being zero decked. I don't know how anyone would know the specific blocks deck height, without physically measuring, if in fact, the block was anything other than zero deck. Unless they are virgin blocks from world products, but even then?
09-23-2016, 09:04 PM
#483
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BB - I felt the quake up here. LOL.
09-23-2016, 09:08 PM
#484
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09-23-2016, 09:15 PM
#485
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Interestingly, I was drinking from an "Allstate Carbs" coffee mug I recieved free when ordering some carb parts last year.
Would it kill Bob to throw in a MK hat or koozy when ordering cams and heads? Maybe Tim would feel better about his situation if he had a hat to keep his head warm and beer cold.
Would it kill Bob to throw in a MK hat or koozy when ordering cams and heads? Maybe Tim would feel better about his situation if he had a hat to keep his head warm and beer cold.
09-23-2016, 09:18 PM
#486
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09-23-2016, 09:28 PM
#489
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Interestingly, I was drinking from an "Allstate Carbs" coffee mug I recieved free when ordering some carb parts last year.
Would it kill Bob to throw in a MK hat or koozy when ordering cams and heads? Maybe Tim would feel better about his situation if he had a hat to keep his head warm and beer cold.
Would it kill Bob to throw in a MK hat or koozy when ordering cams and heads? Maybe Tim would feel better about his situation if he had a hat to keep his head warm and beer cold.
09-23-2016, 09:37 PM
#490
Registered
Lets not get off topic just yet. We havent hit 50 pages yet. 
I wonder what the science is, behind the fact, Timmys 540ci engines, with AFR 325 heads, got a 241/246 cam, and the tight quench guy, gets a 242/247 cam, with a little less lift? Both have flat top pistons, 4150 carbs, both heads milled to 114cc... Why the change?
I wonder what the science is, behind the fact, Timmys 540ci engines, with AFR 325 heads, got a 241/246 cam, and the tight quench guy, gets a 242/247 cam, with a little less lift? Both have flat top pistons, 4150 carbs, both heads milled to 114cc... Why the change?
