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Re: Edelbrock Performer vs Thermoquad...

Unread postby Acesneights on Thu May 25, 2017 6:52 pm

Zed wrote:I never ended up using the Holley spreadbore I ordered, and no returns from Allstate carbs. I made a stupid mistake of not checking my intake which was actually a squarebore not a spread. Not wanting to throw more money at it and because i think the aluminum intakes commonly offered as aftermarket replacements are the source of the vapor lock problems I just shelved the Holley that Allstate built for my 413.

I'll sell it for less then I paid from Allstate if you decide to junk the T-Quad. I've never run one but I know they are mostly disliked by many.

Just the opposite. Cast iron holds heat which is what boils the gas after you shut it off and also the after market manifolds don't have heat risers so even less chance. The Holley spreadbore worked great till the day I sold it.
The spreadbore will work fine on a factory manifold. You need a 17$ adaptor plate made by Mr. Gasket. Summit sells them.
1975 Travco 270
1974 Travco 220 Parts unit
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Travco Model: 1975 270,1974 220

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