4- bolt main caps??

Anyone seen these before????

http://cgi.ebay.com/ebaymotors/Pro-Gram-3-main-center-caps-Program-Buick-455-B455C_W0QQitemZ220359622314QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item220359622314&_trksid=p4506.c0.m245&_trkparms=72%3A1171%7C65%3A12%7C39%3A1%7C240%3A1318

 

Yea I e-mail the seller to see if that was the right picture I don't think it is....

 

here is their web site http://www.pro-gram.com/

 

Generic picture for the listing on Ebay they are in fact 2 bolt. I got excited awhile back myself. Program does make beautiful stuff though, I have a set of custom 4 bolt mains for my other car....not cheap.

 

I wouldn't worry about aftermarket two bolt caps, it's the main webbing that will probably give up first.

Devon

 

I don't know why aluminum main caps in a 455 has never been tried. In a 440 it will raise the HP limit by 200-300 HP on a factory block. The aluminum absorbs the harmonics and that keeps the main webs from cracking. Many Mopar people claim the Pro-gram steel main caps make the problem worse not better.

 

I Believe Ta Does Billet 4-bolt Main Caps.rod Hendrickson Had Them On His 1000hp Motor And They Lasted Quite A Few Runs.

 

The new revised girdle with the 4 bolt main mod made it possible for rod's engine to last 3 years versus 1 summer, this mod is available on all new block girdles.

 

That what i was thinking just $300 more of parts to drop on the ground....