[PONTIAC LARRY]

Originally Posted by Mr. P-Body

The multi-valve relief pistons may "fit" but they are a poor choice if a quality build is what you're after. We use the L2262F (std.) and "dish" it with a simple dish of 16 CCs (3.25" x .100").

Larry has obviously not used the XE cams in lower compression applications. They hardly "suck". We use XE262H as a "replacement" cam for any application where 10:1 or higher and an 068/744 cam would have been used, once static compression has been reduced to below 9.5:1. Our 600 HP (93 octane) street packages use XE solid rollers.

Jim

Jim,
You are right on me not running one.. but I don't discount on a 7.6:1 smog-era Pontiac that it wouldnt make good power. we are talking about a 10:1 389.. and I think it only fair to say that letting someone know all there options to make there own choice is right.
Apparently , a "quality" rebuild by some implies that you have to have a custom , expensive "pro" engine builder "do it right". So all the cast/hyper pistoned 9:51 engines in the world built by very long established national rebuilders and OEM ..lack quality ?
I see half the world split between "Brand name " ,"espensive is better" cheerleaders and the rest of us that sometime's use cast pistons and generic brand cams in our rebuilds lack all the quality according to some...if the guy wants to triple the cost of his engine...go for it.. but I still would not use a 110 LS cam in it..
JMO friends

[pontiacs-r-us]

Thanks guys.Im glade we can all agree to disagree.Also Im thankfull that the Pontiac market is strong enough that we have many choices.I may be ahead to build something else since this is not a #matching block.If I do,I think the dished forged piston is the way to go because of CR.I have dished TRW's in the past to retain orig. heads.I also have used the cast one's in low compression stock rebuilds with good results.(I have friends and customers on low budgets also)I saw where KB has forged pistons now,and they offer a dished(-14cc)forged piston(none for std.400 or 389's)This is good news for us,if quality is good.As for cams I felt that the EX-262H wasnt the best choice because of CR..I have the EX-262 for a 8:1 400 rebuild.Larry,I have a EX-274H in my 455,and like it very much.Thanks Guys.If anyone has this type engine,chime in and tell us about your combo and how it works.As Im shure I will run into this again and have to retain a #matching block.Thanks again,Kenny