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1967 Shelby GT350/500 / Re: 1967 Casting Number - Clock Code
« on: November 10, 2023, 11:49:04 PM »
#1 is day shift #2 is time of day 8am 3 and 4 I don't have an answer.
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They were fit to a 68 Mustang built on the car by Kooks before they left Long Island to go to NC.Doug, the headers I posted are for a set of B351 heads both sides can be removed in 45 minutes also the bottoms of the collectors are above the bottom of the bell housing.
The A, B351 and C302 heads all mount the headers the same. The port sizes are different though.
Interesting header configuration that you have. Which year are they designed to fit and who made them?
I only saw one set of the Motorsport "high port heads" in a 65 Mustang chassis. Probably were A3's considering the date? It was an R model of all things and the owner had removed the original shock towers and installed a 67 set.
He was wrestling to make headers fit and this was before JBA decided to make a few sets to fit the set up although I can't swear that JBA's would fit a 65-6 chassis, just a 67-8.
No doubt that considering the availability of 331/347 kits now, a smarter set up to run would be a Boss 302 block with those heads and it would go a long way to solving many issues? For one thing, an 8.0 inch v 9.2 inch deck block so that helps IMMENSELY.
As I recall the 351-c block is about 35 pounds heavier then a 302 block and you feel that in the handling of the car.
In my 68 GT350, I'm running AFR 185 Windsor heads with a C60A 2x4 Holley intake, 302 block/347 cubes. Those heads have better flow numbers then stock B2 heads do.
So for me I created a perfect animal that is about 100 pounds lighter then a 351-c is and has enough power for me.