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Author Topic:   Edelbrock heads install
65driver
Gearhead

Posts: 216
From: Syracuse, NY
Registered: Feb 2000

posted 03-20-2002 10:47 PM     Click Here to See the Profile for 65driver   Click Here to Email 65driver     Edit/Delete Message   Reply w/Quote
I'm about to install Edelbrock Perfoermer RPM heads on my 289. They have instructions to drill 1 hole in the block on each bank, by number 1 cylinder and number 5. The Edlebrocks have 4 coolant passage holes at the top right of each cylinder, not just by #1 and #5 position on each head. The gaskets also show a hole in the same spots. My old heads had a hole at the top of each cylinder that match an oval hole in the block at each cyliner. These are not present on the Edlebrocks. Why does Edlebrock have me drilling only one hole on each bank, instead of 1 hole at each cylinder to match the holes in the Edlebrock heads? I don't want to make a mistake here. Anybody install these heads on an early 289 block before?

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Mark66289
Journeyman

Posts: 18
From: Auburn, Cal, USA
Registered: Mar 2002

posted 03-21-2002 11:46 AM     Click Here to See the Profile for Mark66289   Click Here to Email Mark66289     Edit/Delete Message   Reply w/Quote
That's weird i just got those heads also and was wondering the same thing.

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1966 Coupe, Wimbledon White, 17 inch Cragar SS's,Falken 245/45ZR,Pony Interior Emberglow and Parchment
Inline Six....Ha Ha
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65driver
Gearhead

Posts: 216
From: Syracuse, NY
Registered: Feb 2000

posted 03-21-2002 07:33 PM     Click Here to See the Profile for 65driver   Click Here to Email 65driver     Edit/Delete Message   Reply w/Quote
I called, Edelbrock, and they said that one hole in #1 and one hole on #5 is all I need. I didn't really get an explanation as to why there are 3 other water passages in each head, and yet only one will be used. Anybody shed any light on this? I am anxious to put them on, but I really would like to know the "why" before I do.

[This message has been edited by 65driver (edited 03-21-2002).]

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