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post #1 of 3 (permalink) Old 03-20-05, 07:08 AM Thread Starter
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351 clevo help

hey, ive been a holden/ ford man for years, but owned all holdens...

i just bought a xb coupe project car that has a stock 351 in it!

is this 351 a 2valve?

i want to build my 351, if possible, into a XY GTHO engine

wondering what parts are needed besides the 4v closed chamber heads!

and is it pricey...not that its an issue?
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post #2 of 3 (permalink) Old 03-20-05, 02:38 PM
74 XB Fairmont
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Location: Cranbourne, Vic
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Re: 351 clevo help

All you'd need is the GTHO carb (can't remember which one), manifold to suit the heads, camchaft, the H&M headers and exhaust.

Have a look @ http://www.perfordmag.com -> "How to build" link

XB Fairmont (street car) 11.07@123.02mph.
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post #3 of 3 (permalink) Old 03-20-05, 06:07 PM
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Re: 351 clevo help

Gday XB351

Your XB engine will be a 2V. The Phase 3 GTHO carby is a 780 cfm vacuum secondary carb. They are still about (the genuine HO ones are rare) and occasionally for sale. They were a good unit, easy to work on and responded well to changes. If you buy a well used 780 though, it may be worn out i.e. throttle shafts, etc. I have been told by some engine builders that a new 750 vac sec does a fine job as a replacement.
The cam grinds for the HO's are available from some grinders as well.

Have fun
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