Originally Posted by getrdunn (Post 4488231)

Must have had some valves not closing all the way also. Could explain the overly rich looking chambers, down on power, chamber cc's? etc. Would be nice to know what installed height was suppose to be in comparison to what is shown.

Originally Posted by MILD THUNDER (Post 4488242)

Reminds me of the shop that replaced the seats and rebuilt my old heads. Install heights all over the place. However, those were 15 year old castings, that been thru a few hands. If the install heights varied that much on a new set of heads that never been cut, I would think that is , well, not so great. At the very least, even if the seat height varies that much, or like sutphen said, the casting itself having different heights of the spring perch, you would think that someone would go thru them, record all install heights with the retainer and locator installed, and shim accordingly, so at least, all the springs have equal pressures. .040 variance, is alot!

Any good shop worth its weight, would blueprint a set of heads so to speak, and check each valve. Not check one valve, throw 16 springs in there, and call it good.

Originally Posted by MILD THUNDER (Post 4488272)

Are bobs cams designed for a .700 lifter wheel, a .750 lifter wheel, or what? Does anyone know the answer to that? Or has that ever been a question? While a minute change, the lifter wheel diameter, does play a role in the actual cam timing. Not a ton, but, I mean we are talking about super secret squirrel custom cams, I would think that would be a consideration. The johnson lifter has a .700 wheel, morels, PBM, lunati, howards, upper end hyd rollers use a .750 wheel.

Originally Posted by MILD THUNDER (Post 4488251)

For sure. On mine, we checked all 32 springs. Sure enough, we found 1 spring out of spec.

Originally Posted by Full Force (Post 4488307)

lots of idling on hose while playing with trans...

Originally Posted by 14 apache (Post 4488282)

Put an aluminum head to 475 and you will make junk.

Originally Posted by 33outlawsst (Post 4488245)

I thought this was all checked when the lifter stuck ?? before it went back together.......spring issues ect.

Originally Posted by SB (Post 4488320)

Oh my !

Sorry, just some funny relief. LOL.

Originally Posted by 33outlawsst (Post 4488313)

Morel .750 in my 540's................ how about answering post 1146

Originally Posted by MILD THUNDER (Post 4488327)

How about calming down? Jesus. I didnt assemble the guys heads, nor did i have anything to do with the assembly. He lives 4 hours from me .

It seems like some are trying to disprove, that their may be an issue here. Even if all this was tims fault, what about haxby? Mer ? Kvogt? Mr gadgets, black baja ,and so on? Are they all doing it wrong too?