FIXED!-340 w 750 vacuum Holley dies In gear
#2515066
06/29/18 09:02 PM
06/29/18 09:02 PM
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Joined: Dec 2004
Posts: 1,561 DC, MD Suburbs
440PURSUIT
OP
pro stock
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OP
pro stock
Joined: Dec 2004
Posts: 1,561
DC, MD Suburbs
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This car sat for a long time and I got rid of bad gas. Carb needed accel pump diaphragm. Checked power valve and replaced with 5.5. Can hear PB booster push air when inside of car when hit brakes. I have plugged out vacuum gage at back of carb to eliminate.
Decent built 340 with aggressive hydraulic cam and auto, Feels like 10” body on converter. r I fixed the blown manifold. Pulls about 7 vacuum idling. Have had it up to 10. Idle mixtures screws respond lazy. Not loading up and distributor reworked, advances etc. Timing at 15 and 36 total.
Thinking of swapping out another known good carb.
What are you thinking? Bad metering block gasket? Blown PV again?
No leaks at manifold or base plate.
Last edited by 440PURSUIT; 06/30/18 08:55 PM.
1969 Hemi Charger R/T, 1970 Charger 472 Hemi 6 Sp 1969 Charger Pro Tour Project 1971 Barracuda Convert 1970 440 6pack Superbird, 1968 Fury I Police Pursuit 440 Super Commando 2 door sedan (Black/Blue) 1967 Barracuda Convert 1968 Barracuda Coupe 1972 Charger Rallye wanna be RT 1972 Sebring Plus 440-6 Clone 1969 Coronet Pro Street 2009 Challengeer SRT8 stick 1992-1986 Body 2500 4x4 440 stick 1982 Ramcharger 318 Sniper- getting enhanced. 1991.5 W250 Cummins- Big Chief
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Re: 340 w 750 vacuum Holley dies In gear
[Re: 440PURSUIT]
#2515100
06/29/18 10:27 PM
06/29/18 10:27 PM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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Bump the distributor to 18° and see what it does for vacuum.
Boffin Emeritus
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Re: 340 w 750 vacuum Holley dies In gear
[Re: 440PURSUIT]
#2515214
06/30/18 10:12 AM
06/30/18 10:12 AM
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Joined: Dec 2004
Posts: 1,561 DC, MD Suburbs
440PURSUIT
OP
pro stock
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OP
pro stock
Joined: Dec 2004
Posts: 1,561
DC, MD Suburbs
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Seemed to Idle fine when first resuscitated. Car had an MSD system on it with MSD distributor witha rat nest of hacked wires and squirrel chews and a Performer intake.
It had a leaking accelerator pump, blown power valve and leaking accelerator pump. I serviced carb and I drove it around.
Idled fine. had no ass.
changed to rehabbed wire harness, chrome box, electronic distributor. Starts and runs great.
1969 Hemi Charger R/T, 1970 Charger 472 Hemi 6 Sp 1969 Charger Pro Tour Project 1971 Barracuda Convert 1970 440 6pack Superbird, 1968 Fury I Police Pursuit 440 Super Commando 2 door sedan (Black/Blue) 1967 Barracuda Convert 1968 Barracuda Coupe 1972 Charger Rallye wanna be RT 1972 Sebring Plus 440-6 Clone 1969 Coronet Pro Street 2009 Challengeer SRT8 stick 1992-1986 Body 2500 4x4 440 stick 1982 Ramcharger 318 Sniper- getting enhanced. 1991.5 W250 Cummins- Big Chief
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Re: 340 w 750 vacuum Holley dies In gear
[Re: 440PURSUIT]
#2515220
06/30/18 10:52 AM
06/30/18 10:52 AM
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Joined: Dec 2004
Posts: 1,561 DC, MD Suburbs
440PURSUIT
OP
pro stock
|
OP
pro stock
Joined: Dec 2004
Posts: 1,561
DC, MD Suburbs
|
Took out on shakedown, Loves the double pumper and pulls hard and revs great . Pinged a bit with more timing.
after warm and stopping to do burnouts I still have the big idle drop. i can keep it running with a feathering.
Gotta hit a baseball tournament for the boy so I will another distributor and check running voltages later. Car is running and charging with electronic regulator but I did not look at idle voltage.\
as found alternator is in place
1969 Hemi Charger R/T, 1970 Charger 472 Hemi 6 Sp 1969 Charger Pro Tour Project 1971 Barracuda Convert 1970 440 6pack Superbird, 1968 Fury I Police Pursuit 440 Super Commando 2 door sedan (Black/Blue) 1967 Barracuda Convert 1968 Barracuda Coupe 1972 Charger Rallye wanna be RT 1972 Sebring Plus 440-6 Clone 1969 Coronet Pro Street 2009 Challengeer SRT8 stick 1992-1986 Body 2500 4x4 440 stick 1982 Ramcharger 318 Sniper- getting enhanced. 1991.5 W250 Cummins- Big Chief
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