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that sure looks like a mid 70's manifold with 3 collector bolts....

you need a set of correct set of std manifolds with 2 bolt flange

or better yet buy a set of HO manifolds for the 64-67

Scott

whats the part number on your exhaust manifolds ?
 

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Discussion Starter #4
Thanks, I think they are mid 70's exhaust manifolds. I hate to say it, but I may go with a set of headers, until I find my "forever engine"
Just wondering how much clearance I would need? How much side to side movement.
Thanks
Ken
 

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If you decide to go with headers, Hedman #28140 3-tubes might be a good choice, since they will fit so many body styles. Might make 'em easier to sell, when the time comes. Might even be able to find some decent used 3-tubes for a real good price.

https://www.streetsideauto.com/p/hedman-painted-hedders-28140/?utm_source=GoogleShopping&utm_medium=GoogleShopping&utm_campaign=GoogleShopping&gclid=Cj0KCQiAgf3gBRDtARIsABgdL3ln6zlAVVEtE94GlusbsGBcHxSlFQcRJVcXBvcD4h-lFhsc4PzGSCsaAnPREALw_wcB

Some insist on coated 4-tubes with at least 1 3/4" size tubes, even on mild street only cars. It's your money, so your call.
 

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I would think 1/4" to 3/8 for the torque roll 1/2 is nice

is your forever motor a WS 66 389 or a 455

it would make a difference on where I would spend MY money

Scott
 
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