How can I get my 440 to wake up!!?? Something's wrong.
#2286700
04/12/17 11:17 PM
04/12/17 11:17 PM
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Joined: Mar 2003
Posts: 4,930 Tri-Cities, Washington
VITC_GTX
OP
master
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OP
master
Joined: Mar 2003
Posts: 4,930
Tri-Cities, Washington
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OK, long story short. GTX is a dog, punch it from a stop and it will just chirp the tires. I can't feel a hesitate or bog it just doesn't have any power (been this way for years).
Here is what it has:
440 .030 over forged six pack replacement pistons old (20 years old) 284/484 cam ported 906's Edelbrock RPM manifold w/Holley 750 Advenger carb ~18 inital timing, ~34 total 727 w/340 converter 3.55 suregrip.
I know the cam, car weight, converter, and rear end aren't matched the best but it can't even turn over the tires.
Before I painted the car I could get it to break the tires loose through the gears and only thing I changed was the converter. I took out a stock looking converter and replaced it with the 340 converter thinking it would help.
So, is my setup so miss-matched that I'm screwed or do I just need to go out and buy another converter? I would think that this combo should be able to shred the tires with a stock converter????
Last edited by VITC_GTX; 04/12/17 11:28 PM.
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: VITC_GTX]
#2286716
04/12/17 11:34 PM
04/12/17 11:34 PM
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Joined: May 2003
Posts: 96,666 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
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How quick does it rev up when it's in neutral? And does it have six pack rods also?
Last edited by amxautox; 04/12/17 11:35 PM.
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: amxautox]
#2286727
04/12/17 11:48 PM
04/12/17 11:48 PM
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Joined: Mar 2003
Posts: 4,930 Tri-Cities, Washington
VITC_GTX
OP
master
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OP
master
Joined: Mar 2003
Posts: 4,930
Tri-Cities, Washington
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How quick does it rev up when it's in neutral? And does it have six pack rods also? Seems to be fine in neutral.
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: buildanother]
#2286728
04/12/17 11:49 PM
04/12/17 11:49 PM
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Joined: Mar 2003
Posts: 4,930 Tri-Cities, Washington
VITC_GTX
OP
master
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OP
master
Joined: Mar 2003
Posts: 4,930
Tri-Cities, Washington
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I learned many years ago to put a decent stall converter behind even the 474 mopar cam on a 440 car. I have not bought one since 1978 but a B&M super holeshot turned the 440 cuda into a tire shredder. I currently have a 500" low deck with a PTC 9.5 and it rocks. I have a PTC in the Demon and it rocks!!! I think it flashes around 3700 but I don't want that for the GTX, I'm looking for something a little more streetable if possible.
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: d-150]
#2286730
04/12/17 11:50 PM
04/12/17 11:50 PM
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Joined: Mar 2003
Posts: 4,930 Tri-Cities, Washington
VITC_GTX
OP
master
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OP
master
Joined: Mar 2003
Posts: 4,930
Tri-Cities, Washington
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Did u degree the cam.also 484 likes a 2500 stall I didn't build the engine, it was build 20+ years ago and has about 5000 miles on it.
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: VITC_GTX]
#2286734
04/12/17 11:52 PM
04/12/17 11:52 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I would get a cranking compression number & maybe a leakdown also
live every 24 hour block of time like it's your last day on earth
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: VITC_GTX]
#2286738
04/13/17 12:00 AM
04/13/17 12:00 AM
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Joined: May 2003
Posts: 96,666 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
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Maybe the '340 converter' isn't really a 340 converter, or it's bound up inside for some reason. If it started doing this right after installing it, I'd say it's the converter. If you don't have the old one, maybe borrow one from somebody before buying a new one, if you don't mind removing the trans a few times.
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: VITC_GTX]
#2286749
04/13/17 12:16 AM
04/13/17 12:16 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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I'd make sure it's getting full throttle first, and if it is.......I'd see if I could borrow a different carb. I'd be looking for a 750DP if it were me.
As long as the converter isn't broken/defective, and assuming there was a good carb on it, that combo should run pretty good.
I second the thought of doing a compression test on a least a couple cylinders, just so you know where it's at.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: How can I get my 440 to wake up!!?? Something's wrong.
[Re: fast68plymouth]
#2286750
04/13/17 12:20 AM
04/13/17 12:20 AM
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Joined: Mar 2003
Posts: 4,930 Tri-Cities, Washington
VITC_GTX
OP
master
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OP
master
Joined: Mar 2003
Posts: 4,930
Tri-Cities, Washington
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I'd make sure it's getting full throttle first, and if it is.......I'd see if I could borrow a different carb. I'd be looking for a 750DP if it were me.
As long as the converter isn't broken/defective, and assuming there was a good carb on it, that combo should run pretty good.
I second the thought of doing a compression test on a least a couple cylinders, just so you know where it's at. I took off a 750 DP because I was told the mechanical secondaries were compounding my problem. Unfortunately the carb sold with my barracuda a couple of years ago. I'll have to compression test.
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