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Assuming you have stock type dished L/48 pistons you want the 64cc
version. 60909 performer strait plug head uses edl-5767, 1.46 dia. springs .575 lift but in my catalog, summit or jegs I have not been able to find the spring pressure listed.
The previous owner said the engine was rebuilt, but I doubt that is right. I will have to pull off the old heads, before I buy the new ones, jsut to be sure, though.
I am looking at some cheaper ones on eBay currently. I would save about $500.00 over the Summit price of the Edlebrock ones.
They seem to be the same. The guy is using quality parts, and the spring rates are similar. I would still need to prot match them to the intake and gaskets.
Are they edelbrock heads ? lots of chinese stuff on ebay. you want the 64cc chambers even if you find out you have flat top pistons. If you have original type dish pistons 58cc chamber would be even better.
You could find a better cam then the edelbrock to use.
Brodix has there IK180 head BRO-1021004, $1025.00 www.summitracing.com.
Brodix has made aluminum heads since 1969.
Last edited by Little Mouse; 12-01-2008 at 11:41 AM.
I have a set of Procomp aluminum Vortec heads for my 405 and I think the quality is fine. The heads were shipped to a friend's machine shop bare where he built them using quality parts and performed port work on the exhaust throat and gasket matched the exhaust openings.
I thought Procomp was Australian.
Anyway, the quality seems fine...just as good as any other after market head for that price. Obviously with more money you get a better product.
I am running th 64cc Edelbrock RPM heads with flat-top pistons. Go with the 64c heads.
Edelbrock Performer RPM Heads and intake
Crane Cam and roller rockers
BTO 200-4R trans, 3.55 gear
Leather seats, F-body seatbelts, Pioneer CD player
Body off repairs
Magnaflow Exhuast System
Dewitt rad and dual electric fans
Nostalgic Air Parts (AC system)
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