[Mike Taylor 3601]

Billy,
I know spec head would have engine built around heads also,what I meant on restrictor plate as example you had X amount of cars running that had just added restrictors,and someone shows up with engine built specifically for restrictors,I'm not sure it would work out.
In my opinion spec head,750/850 carb,cast alum.intake,if supposed to be unmodified that could be bad,if ever seen the unmodified intakes Wilson does for some of the nascar series,they look untouched,but have alot of work done,cut in sections,plenum sizes changed,etc.never heard how many $.
What do associations that run spec head do on intake manifolds?

If 8.5 lbs per ci was the weight around 380'' is biggest I would consider myself,with 2800 min. weight 329.4 would be smallest could be. so that limits how many different sizes you would want to run.

My theory on deck height is from 9.0-9.6 you cover sbc,351W,sbm, from factory351w has alot bigger main,but aftermarket blocks mostly have cleveland main,which puts all three brands close together on main size,and rotate assm. of all three could be built close together in rotating weight without a guy having to spend a bunch of money.

I want to be sure no one takes my post wrong,I'm not saying my ideals are right and yours are wrong,I think is all interesting and am enjoying the conversations.
Mike Taylor 3601