help - Page 2

Dave Ribeiro · 07-20-2011, 05:27 PM

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....

tpoh815 · 07-20-2011, 06:13 PM

Rob check brake system real good sometimes a brake line (factory rubber coated ones) will not let brake fluid return causing the rotor(s) or drums to stick on after applying the brakes. Or make sure nothings bent somewhere.Does the car coast? See if after holding the brake pedal the car rolls. or see if they stink from heat. Sounds dumb but ive been there. Keep us posted and good luck. Mike

Tony Curcio · 07-20-2011, 07:37 PM

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 · 07-20-2011, 07:54 PM

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 · 07-20-2011, 07:59 PM

Quote:

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 · 07-20-2011, 08:52 PM

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 · 07-20-2011, 09:01 PM

Quote:

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

bill dedman · 07-21-2011, 01:17 AM

Quote:

Originally Posted by rgarvey

no clutch for cooling fan i just ripped the timing cover off looks fine as far as the cam lobes lash was fine cam looks like new also has shubecks checking dist leads now

I had a friend who ran A/SA with a hard-leaving car (G.M. 12-bolt) that suspected that his rear end housing was bent, and it was... pretty badly, BUT in just the opposite way you'd expect; his rear tires were toed OUT, not IN, as you'd think they'd be.

Go figure....

rgarvey · 07-21-2011, 06:53 PM

i wanna thank everyone for the help and input i as we speak am ripping the rearend apart to inspect things thank you

Jim Storms · 07-21-2011, 08:33 PM

This is a good discussion! why a RacePack does wonders. hope you find your bug without to much exspense.

07-20-2011, 05:27 PM	#11
Dave Ribeiro VIP Member Join Date: Sep 2002 Location: Williamsburg, Va.---USA Posts: 1,827 Likes: 1,612 Liked 56 Times in 27 Posts	Re: help 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.... __________________ Dave Ribeiro 1033 STK

07-20-2011, 06:13 PM	#12
tpoh815 Senior Member Join Date: Oct 2003 Location: West Seneca Posts: 537 Likes: 62 Liked 28 Times in 11 Posts	Re: help Rob check brake system real good sometimes a brake line (factory rubber coated ones) will not let brake fluid return causing the rotor(s) or drums to stick on after applying the brakes. Or make sure nothings bent somewhere.Does the car coast? See if after holding the brake pedal the car rolls. or see if they stink from heat. Sounds dumb but ive been there. Keep us posted and good luck. Mike __________________ EX 5-Doorstocker Last edited by tpoh815; 07-20-2011 at 06:18 PM.

07-20-2011, 07:37 PM	#13
Tony Curcio Member Join Date: Mar 2002 Location: West Chester, PA Posts: 271 Likes: 1 Liked 4 Times in 1 Post	Re: help 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. __________________ Tony Curcio 1860 STK

07-20-2011, 07:54 PM	#14
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: help 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. __________________ Ed Wright 4156 SS/JA

07-20-2011, 08:52 PM	#16
Ronnie Hamlin Member Join Date: May 2005 Location: Chalybeate Springs, N.C. Posts: 131 Likes: 18 Liked 29 Times in 8 Posts	Re: help 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.

07-21-2011, 06:53 PM	#19
rgarvey Junior Member Join Date: Jun 2007 Posts: 58 Likes: 0 Liked 0 Times in 0 Posts	Re: help i wanna thank everyone for the help and input i as we speak am ripping the rearend apart to inspect things thank you

07-21-2011, 08:33 PM	#20
Jim Storms Member Join Date: Aug 2005 Location: Renton, Washington Posts: 320 Likes: 0 Liked 4 Times in 2 Posts	Re: help This is a good discussion! why a RacePack does wonders. hope you find your bug without to much exspense.