289 Ford SS carbs
 

Looking at the different combos, has anyone tested the 1.08 vs 1.12 Autolite carbs performance difference? On the '64 iron head combos, 203HP rating for the small carb, 220 for the large carb in GT. Seems like the small carb would be the better option?

Re: 289 Ford SS carbs
 

Tony Denysenko may have some information based on testing that Alex (RIP) did.

Re: 289 Ford SS carbs
 

112 is 8hp more on dyno

Re: 289 Ford SS carbs
 

Wow, if that's all, the small carb at 203HP is definitely the better combo?

Re: 289 Ford SS carbs
 

Jim you have a PM.

Re: 289 Ford SS carbs
 

I believe that the 1.12 was referred as the Mercury carb.

Re: 289 Ford SS carbs
 

With better heads now it may show more hp this was 1990 when it was dyno. 1.12 were on 289 hipo and comet also on some 352 and 390

Re: 289 Ford SS carbs
 

I am currently building a '64 Comet for SS/MA, actually the car is well along and will be ready to test fire in the next few weeks. The motor is a '64 289 210/220 which is the big carb Merc motor combo. I just notice that the small carb Mustang motor is rated at 203 in GT RWD, that combo seems better so I am considering switching to GT/QA to take advantage of that combo, the only difference is the carb so not a big issue to change. If the smaller carb has minimal performance lose, this is sort of a no brainer.

In case anyone is wondering, I'm still racing my SS/FS Escort. The Comet was my racer that I have owned since I was a teenager, it's been sitting in the corner of the shop and finally putting it back together, not like I would ever sell it. As a sidenote, remember when we used to buy cars like this in the Nickel Ads for $500, swap your engine, trans and rearend in and go racing a few weeks later? A little more complicated and way more expensive now.

Jim Caughlin
SS 6019

Re: 289 Ford SS carbs
 

Great to see another SS Ford small block coming out.

Re: 289 Ford SS carbs
 

Jim

Congrats on the Comet, can't wait to see it!

I sent you a PM

Joe