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-   -   Cam and valvetrain longevity....??? low duration high lift... (https://www.offshoreonly.com/forums/general-q/341258-cam-valvetrain-longevity-low-duration-high-lift.html)

getrdunn 10-02-2016 08:03 PM


Originally Posted by MILD THUNDER (Post 4487440)
Its funny. I have Comp, Lunati, Howards, Crane, Erson, Crower, catalogs here. Literally hundreds of cams for hyd roller bbc chevy engines, fitting everything from a towing 454, to a drag strip 598.

Then the need for a "custom cam" comes up. Problem is, all these cams that come from MK, appear to be almost a once size fits all! A 548ci gets fairly close to the same cam, as a 496/502! Almost all the same LSA, almost all the same ICL, durations within a few degrees, lift within a certain range, etc.

A AFR headed 9.8:1 540, gets almost the same cam as a 9:1 GM iron headed 540, with a full point of compression difference too! How many guys had to be schooled on the importance of static compression, and its effects over the phone. The recommendation of using the thinnest head gasket possible to maximize the combo. lol


Bob should go into selling Kirby vacuum cleaners. I am really disappointed and feel bad for the many who have fallen into the Bob trap. Has bob addressed any of these known issues? Can't wait to see thread MT is going to start. I think it's wise also MT is keeping names out of it for many reasons unless they don't care. I think the list will grow. Some not only got screwed but also got their pride fked with bad.

ICDEDPPL 10-02-2016 08:09 PM


Originally Posted by 272lsformula (Post 4487444)
540ci
dart 345s
8.2-1 compression
tbs 8-71s 6% under driven quick fuel 850 carbs
emi thunder manifolds with dry tails

That`s pretty much my combo, 651 works just fine.

Full Force 10-02-2016 08:23 PM

it all started to unfold when I was having my issues, early in my build process you, Joe and I were still Pro Bob.... right after I got all my parts is when things started to get off... I remember asking opinion on Scorpions you had at the time, was happy still lol


Originally Posted by ICDEDPPL (Post 4487443)
Whew, Good thing you did , me and Joe had no idea for the past 2 years

:rolleyes:


sutphen 30 10-02-2016 09:04 PM


Originally Posted by getrdunn (Post 4487441)
Tried pm u. Box is full.

thats what my gf says.:),,i'll empty it again.

MILD THUNDER 10-02-2016 09:06 PM

100 pages. Good Lord.

SB 10-02-2016 09:08 PM


Originally Posted by sutphen 30 (Post 4487476)
thats what my gf says.:),,i'll empty it again.

Shouldn't it be the other way around. I hope.:ban:

endeavour32 10-02-2016 09:12 PM


Originally Posted by MILD THUNDER (Post 4487440)
A AFR headed 9.8:1 540, gets almost the same cam as a 9:1 GM iron headed 540, with a full point of compression difference too! How many guys had to be schooled on the importance of static compression, and its effects over the phone. The recommendation of using the thinnest head gasket possible to maximize the combo. lol

I was told over and over- compression, compression, compression! "you can't use that cam unless the compression is a point higher" WTF!

getrdunn 10-02-2016 09:18 PM


Originally Posted by SB (Post 4487480)
Shouldn't it be the other way around. I hope.:ban:

You don't miss much do ya. Lol... But I bet you didn't know 2017 shameless started tonight. Normally not til January. Why now after 7 years? Frank gonna be president or something.

offshorexcursion 10-02-2016 09:38 PM

Just imagine all the unhappy customers who are scared to post, don't like drama, or are not even member here!

buck35 10-02-2016 09:51 PM


Originally Posted by offshorexcursion (Post 4487489)
Just imagine all the unhappy customers who are scared to post, don't like drama, or are not even member here!

Had I been ready a couple of years ago, I probably would have been one of the unfortunate souls to have gotten taken as he seemed to be the man at the time. I have to guess there are a ton of bad builds out there that either haven't reared their ugly heads or just don't have enough hours yet to show the issues to an extent the owner realizes theres a problem. :cartman:


its fall, isn't everyone supposed to be fighting? :daz:


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