Cam and valvetrain longevity....??? low duration high lift...
#491
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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.![Party Smiley 004](/forums/images/smilies/party-smiley-004.gif)
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.
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#493
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I can say one thing, the cams that erson custom ground for my old engines moved this slug VERY well, the acceleration was WAY better from 4000-5500...
Never gonna happen on Nickersons dyno. After the first pull he's going to tell him the cam is all wrong and he has a guy down the street that custom grinds his cams for $500. His custom cams are actually $250 Erson cams... It will make 100hp more on his dyno with the custom Erson shelf grind.
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#494
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yep, Ray assembled 4 corners and checked deck, the square decked block to .010 in the hole... then checked and verified again, we also did when degreeing cams..
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?
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#495
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I got some sweet labels on my lifters!!!! lol
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.![Party Smiley 004](/forums/images/smilies/party-smiley-004.gif)
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.
![Party Smiley 004](/forums/images/smilies/party-smiley-004.gif)
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#496
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I wondered that myself... the things that make you go hmmmmm....
I have a feeling I was Bobs experiment that went bad, and he surely picked the wrong guy... the internet a-hole to expose him, after all the slack I get for it... I would do it again in a heartbeat...
I have a feeling I was Bobs experiment that went bad, and he surely picked the wrong guy... the internet a-hole to expose him, after all the slack I get for it... I would do it again in a heartbeat...
Lets not get off topic just yet. We havent hit 50 pages yet. ![Helmet](/forums/images/smilies/helmet.gif)
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?
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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?
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#498
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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.![Party Smiley 004](/forums/images/smilies/party-smiley-004.gif)
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.
![Party Smiley 004](/forums/images/smilies/party-smiley-004.gif)
You should be drinking out of the engine builders mug
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#499
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I would expect it to with a bigger arm spinning around. Acceleration gets better and better the bigger the crank even with junk heads on the motor. I kept same heads went from 4.5 stroke to 4.75 stroke and difference was night and day. 4.75 felt like a blower was added. Added 30* of duration to the cam with the bigger stroke.
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ya guess so, the only the dude did right that built them old engines was get parts that worked together very well...
I would expect it to with a bigger arm spinning around. Acceleration gets better and better the bigger the crank even with junk heads on the motor. I kept same heads went from 4.5 stroke to 4.75 stroke and difference was night and day. 4.75 felt like a blower was added. Added 30* of duration to the cam with the bigger stroke.
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