Edelbrock Performer RPM

I live in Maine. I run a chokeless HP series Holley. My car is far from a daily driver. I went from an LD to the RPM air gap in a mild 340. No real noticeable difference. But there again if it is below 35-40 I am not driving it anyways because of the no choke and it being so cold blooded.

swinger340 said:

I live in Maine. I run a chokeless HP series Holley. My car is far from a daily driver. I went from an LD to the RPM air gap in a mild 340. No real noticeable difference. But there again if it is below 35-40 I am not driving it anyways because of the no choke and it being so cold blooded.

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Same exact situation here. Anything under 30's I'm not on the road. My GT will never see snow or salt.

The day I had the AF meter in it it was between 70 and 80 degrees. So in summer 90's+ I'm sure it's a touch rich, in the early spring and winter in the 30's and 40's.. a touch lean. I

I feather the throttle for maybe 60 seconds and then it will idle on it's own. Maybe let it run another minute, maybe not and drive away.

It's a great manifold. If you have street gears keep the divider. If you have 3:91:1 or better have the center divider milled down to 1/2 inch tall. You lose a little bottom end, but in the mid and high range it will have better distrubition and make more power. 600 to 750cfm carb and a 1/2 inch spacer. I have run this combo to the high 11's.

sireland67 said:

I would leave the LD340 on, it is a great manifold.

As far as cold winter starts, my guess this sits in a garage, and is a pretty pampered car, since he bought it new 44 years ago and it only has 50K miles.

Please post a picture of your car.

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OK. Here are some pics