Drilling cast aluminium valve covers & baffle options - The 1947 - Present Chevrolet & GMC Truck Message Board Network

grancuda · 10-04-2009, 11:21 PM

I was considering running a set of Corvette finned valve but I found some vintage Edelbrock finned w/provisions for drilling and installing pcv/breather/twist-on fill cap and the bottoms have non threaded boss's for baffels.
I am considering running Moroso baffled grommets. Anyone run these?

I am probably going to drill them out to 1-3/16 but the grommets say they are for 1.22 hole but I don't know that there is a hole saw or drill bit that size.

Anyone else done this lately?

mplex2000 · 10-04-2009, 11:25 PM

If you can't find the exact same size bit or hole saw you might need to go a big smaller, then dremel or die grinder to get it just right.

10-04-2009, 11:21 PM	#1
grancuda Registered User Join Date: Nov 2007 Location: Central OK Posts: 396	Drilling cast aluminium valve covers & baffle options I was considering running a set of Corvette finned valve but I found some vintage Edelbrock finned w/provisions for drilling and installing pcv/breather/twist-on fill cap and the bottoms have non threaded boss's for baffels. I am considering running Moroso baffled grommets. Anyone run these? I am probably going to drill them out to 1-3/16 but the grommets say they are for 1.22 hole but I don't know that there is a hole saw or drill bit that size. Anyone else done this lately?

10-04-2009, 11:25 PM	#2
mplex2000 Registered User Join Date: Jul 2005 Location: DFW Posts: 463	Re: Drilling cast aluminium valve covers & baffle options If you can't find the exact same size bit or hole saw you might need to go a big smaller, then dremel or die grinder to get it just right.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.