Quote:

The Edelbrock, Stealth, Pro Comp, etc., heads all need to be gone through by a machine shop before being bolted on. The Trick Flow heads aren't even available yet.
Todd Marsh has the Sidewinders he sells already checked out and any issues corrected.






I installed 2 sets of edlebrock heads right out of the box, one set on a 340 in 2007 which now has 26K miles in it and has been beat hard. It still burns no oil still has the same 165 cranking compression since new.

Then same deal right out of the box on my 440 I built in 2004, it's still running great today right out of the box!