hhhmmm wouldent you want a lower deck hight in a comet or mav? plus would enybody have seen a double intake and carb set up on a 289. i know the intake would also fit a 302 but what carbs would be best to use?
The taller 302 was only used a couple years, and it was only 0.023" taller. 8.206" vs 8.229" IIRC. So, it won't make any difference you would notice, and you could vary more with head gasket changes or head milling. Ford made dual 4 intakes in the 60s that you could order with the car and have the dealer install when it was delivered. They didn't install it at the factory. Shelby used them occaisionally. The intake was set up to use 2 small Holleys. The side hung float style like the 1850 carb. Personally, I would use a pair of 390s. This is a late repop... The original looks similar, but a little smoother IMO. The outward appearance of the runners are round on the original, instead of squared off like these.
Here's the original for comparison. I like this design better than the repop. Just the way it looks cleaner is cool.
Summit carries an Eldebrock complete kit, two Eldebrock carbs, linkage, fuel lines, etc. Summit part no SUM-CEDL316, cast finish, $949.95, SUM-CEDL318, polish finish, $1099.95. Both come with 500 cfm carbs.
keep the crank and rods and the heads and sell them to a shelby restorer or something as for a 302.. probably hual a roller cam motor out of a boneyard for a hundy or two happy hunting
iwas always told you cant put 302 rods and crank in a 289. but the other way works i used to have one
The higher deck height was used from 74-76, if I remember right. Not the best way to lower compression 'cause it kills the quench distance between the piston top and the head deck leading to detonation. You should try to keep that distance around .032"-.045". Either use thinner head gaskets or have the block decked. Milling the heads will raise compression but won't help quench, leading to even more detonation. There are many people running 331 and 347 stroker kits in 289 blocks. Somewhere the story got started that the cylinder wall skirts of 289s are .100" shorter than what 302s have. I know of several people that have measured numerous 289s and 302s, all report that they find no difference in the cylinder length between the two blocks, with the exception of course of the mid-70s 302s with the extra .023" deck height.
