dave-ger

I have an internally stock 12A from an 83RX7 that I plan to put a holley on. My plan is to build my own adapter to make it fit the stock intake manifold and all that. I'm not too worried about that part, but I can't for the life of me find out any useful information on the jets I should be using, and if I have to do any other modification. I'm not running oil injection, so that helps, but the way Racing beat says they modified metering bodies on their ready to go carbs has me worried. I do plan to call them monday if i have time, and I'd be willing to send my carb in if that's what it takes, but I'd rather not. I'm trying to do this economically. I got a great deal on a brand new holley 465 that's on the way, and I've done a little research on how to tune it, so I just need some jetting info and some insight as to weather or not the carb needs anything else done to it.


thank you for your time.

ghost1000

I'm very experienced with Holley carbs and rotarys. It's more than just rejecting the carb. U have to make some of the parts. Stay away from demon carbs, the throttle blades are cut for large cams and dont work well with rotarys U need to use a holley carb with a secondary metering block. If its vacuum secondaries u can use a screw to make it mechanical. This is ok because u don't need 2 accl pumps with a rotary. I like the 450 cfm and the 600cfm. U'll have to shim the throttle blades, trim the accl pump cam and make idle air bleeds. If u can upgrade the booster to a step down it makes a huge difference. I have the tool and will help anyone in the Delaware area for free. Im tired of rotarys getting a bad wrap from bad tuners