help

[Dave Ribeiro]

I would try another carb, Holley, AFB , Q-Jet, etc to see if it slows down or picks-up ??? Also, how about a Chassis Dyno ??? They can find lots of things and save you Time & Money, no to mention pulling
all your hair out ... Maybe a bad connection / ground or a wire over heating ? It's always tougher when it doesn't miss or backfire etc ...
* Keep us informed & good Luck....

[Tony Curcio]

If you lost the three tenths between the last week of June and the first or second week of July, consider the radical weather change. If you were jetted a little rich last month, you are way too rich in the oppressive gunk we've had for air this month.

Change your metering rods, and you might regain half of what you lost.

[Ed Wright]

Have you been logging your air/fuel with a wide band? You should do that, besides tuning it's a good reference when something like this happens.

[rgarvey]

Originally Posted by Tony Curcio

If you lost the three tenths between the last week of June and the first or second week of July, consider the radical weather change. If you were jetted a little rich last month, you are way too rich in the oppressive gunk we've had for air this month.

Change your metering rods, and you might regain half of what you lost.

no its just been slow since may very consistant but slow

[Ronnie Hamlin]

I had a very similar problem many years ago with my 71 Duster stocker. Changed everything, ignition, fuel system, trans, convertor, etc. etc. Nothing I did made any difference so far as being faster or slower. Turns out the 8 3/4 rear end housing had bent after MANY years of use and abuse. I didn't have a brace welded on at that time. The way I found it was I was going to install my spare hogshead to see if that was the problem. It was near impossible to remove the axle shafts. It might be worth looking at.

[rgarvey]

Originally Posted by Ronnie Hamlin

I had a very similar problem many years ago with my 71 Duster stocker. Changed everything, ignition, fuel system, trans, convertor, etc. etc. Nothing I did made any difference so far as being faster or slower. Turns out the 8 3/4 rear end housing had bent after MANY years of use and abuse. I didn't have a brace welded on at that time. The way I found it was I was going to install my spare hogshead to see if that was the problem. It was near impossible to remove the axle shafts. It might be worth looking at.

thanks i will tear it apart thursday after work i dont have a backbrace either and its old rear end