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holley 750 help #1002640 05/30/11 02:13 AM 05/30/11 02:13 AM
Joined: Apr 2007 Posts: 1,390 CA. RAY1969CARS OP pro stock
RAY1969CARS OP pro stock Joined: Apr 2007 Posts: 1,390 CA.	CAN YOU FIX A BROKEN booster ???? AND DOZ IT HAVE TO B A 750 ONE OR CAN IT COME OUT OF A 650 ??? PLUS WHERE DO I GET ONE ?? can i buy just one ? part two PROFROM MAIN BODY ??? WHAT WOULD THE JETS BE ?? WAS A 4779-7 2679 I GOT IT USE NO JETS WHAT WOULD I USE ON A 340 ??? 6657467-IMG01048-20110529-2024.jpg (75 downloads) Last edited by RAYS_W-5_69DART; 05/30/11 02:18 AM.

Re: holley 750 help [Re: RAY1969CARS] #1002641 05/30/11 08:13 AM 05/30/11 08:13 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	The boosters are sized to a carb so I would get a 750 booster... as for jetting you can look at this list and find your carb... I would set it up stock and work from there http://www.holley.com/data/TechService/Technical/Carb%20Numerical%20Listing.pdf EDIT turn off your caps lock Last edited by MR_P_BODY; 05/30/11 08:21 AM.

Re: holley 750 help [Re: MR_P_BODY] #1002642 05/30/11 09:35 AM 05/30/11 09:35 AM
Joined: Feb 2005 Posts: 5,221 Branson, Mo. J joedust451 super gas
joedust451 super gas J Joined: Feb 2005 Posts: 5,221 Branson, Mo.	You will need to get a tool for installing boosters, its not cheap, by the time you buy the tool & the boosters you'll be out more then a new Proform mainbody, i'd just junk that one or use it as a paper weight. The Proform mainbody is really nice, it comes with jets/gaskets/base screws & extra air bleeds if your useing 4 corner idle, plus instructions for the adverage hobbiest. Just stay away from the "knockoff" on e-bay, its cheap, but i wouldn't trust it. Here ya go. The PF is 20.00 cheaper then the Holley. http://www.jegs.com/i/Proform/778/67100C/10002/-1 http://www.jegs.com/i/Holley/510/134-300C/10002/-1 75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU

Re: holley 750 help [Re: RAY1969CARS] #1002643 05/30/11 09:41 AM 05/30/11 09:41 AM
Joined: Dec 2007 Posts: 622 NC chris3 mopar
chris3 mopar Joined: Dec 2007 Posts: 622 NC	The best place to start with the jetting is with the jets in the list that was attached. Work up in steps of two. When the car drops off back up one and you should be good. Are you sure the booster is broken or is it what some of us call the "snubby" booster. There are boosters made with and without the brass tips on them. We run the boosters with the brass extensions with the larger pumps on our 340 Duster. I have an old Holley book, which has been out of print for a number of years, and I will look to see what booster numbers were in the 750. To remove and change the booster you need a large phillips screw driver to remove the center screw. This screw has a tapered seat. When you remove the booster there is a small gasket. With the booster removed, don't hit the accelerator. There is a small needle under the booster and it will be pushed out by the accelerator. I will add some photo before the day is over. Last edited by chris3; 05/30/11 09:47 AM.

Re: holley 750 help [Re: chris3] #1002644 05/30/11 10:30 AM 05/30/11 10:30 AM
Joined: Jul 2010 Posts: 2,091 Delray beach, Florida P Performance Only top fuel
Performance Only top fuel P Joined: Jul 2010 Posts: 2,091 Delray beach, Florida	Quote: Are you sure the booster is broken or is it what some of us call the "snubby" booster. There are boosters made with and without the brass tips on them. We run the boosters with the brass extensions with the larger pumps on our 340 Duster. I have an old Holley book, which has been out of print for a number of years, and I will look to see what booster numbers were in the 750. To remove and change the booster you need a large phillips screw driver to remove the center screw. This screw has a tapered seat. When you remove the booster there is a small gasket. With the booster removed, don't hit the accelerator. There is a small needle under the booster and it will be pushed out by the accelerator. I will add some photo before the day is over. your describing the squirter, he needs to replace a broken booster. machine shop owner and engine builder

Re: holley 750 help [Re: Performance Only] #1002645 05/30/11 11:58 AM 05/30/11 11:58 AM
Joined: Dec 2007 Posts: 622 NC chris3 mopar
chris3 mopar Joined: Dec 2007 Posts: 622 NC	I am sorry, I just realized that the "booster" on the right side is broken off. I went out to the shop and took pictures of the "squirters" and when photographing the top of the carb I went back and looked closer at his photo. The information concerning replacing the "booster" is correct. It is a task and replacing the body will be much simplier.

Re: holley 750 help [Re: chris3] #1002646 05/30/11 03:41 PM 05/30/11 03:41 PM
Joined: Apr 2007 Posts: 1,390 CA. RAY1969CARS OP pro stock
RAY1969CARS OP pro stock Joined: Apr 2007 Posts: 1,390 CA.	Quote: I am sorry, I just realized that the "booster" on the right side is broken off. I went out to the shop and took pictures of the "squirters" and when photographing the top of the carb I went back and looked closer at his photo. The information concerning replacing the "booster" is correct. It is a task and replacing the body will be much simplier. I see the booster thats broke is the one on the stock holley main body if any of you guys have a main body for sale im a buyer !!

Re: holley 750 help [Re: RAY1969CARS] #1002647 05/30/11 03:55 PM 05/30/11 03:55 PM
Joined: Oct 2006 Posts: 4,765 Q quick77rt Parts Problem
quick77rt Parts Problem Q Joined: Oct 2006 Posts: 4,765	Dont let the booster thing spook ya, all the carb shops have them and alot of carb builders. Local shop wanted alot to put six boosters in my six pack carbs, member here had a buddy, did all six including boosters for $100. Check your local carb shops that dont ad. as a performance shop as they will have the same tool but a normal price.

Re: holley 750 help [Re: quick77rt ] #1002648 05/30/11 06:35 PM 05/30/11 06:35 PM
Joined: Feb 2005 Posts: 5,221 Branson, Mo. J joedust451 super gas
joedust451 super gas J Joined: Feb 2005 Posts: 5,221 Branson, Mo.	By the time you spend the $$ getting booster/boosters repaired or replaced you can buy a PF MB & he will have a much better carb, come on guys, trying to repair a basic MB where the boosters are broke off is just a waiste of $$$, spend it wisely, get a new MB, there just over a 100 bucks . 75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU

Re: holley 750 help [Re: joedust451] #1002649 06/01/11 01:07 AM 06/01/11 01:07 AM
Joined: Apr 2007 Posts: 1,390 CA. RAY1969CARS OP pro stock
RAY1969CARS OP pro stock Joined: Apr 2007 Posts: 1,390 CA.	what is the end # what doz it refer to ???? 4779-(?) 4779-1 4779-2 4779-3

Re: holley 750 help [Re: RAY1969CARS] #1002650 06/01/11 01:18 AM 06/01/11 01:18 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: what is the end # what doz it refer to ???? 4779-(?) 4779-1 4779-2 4779-3 Latest version of that carb(usually a correction or up-date)

Re: holley 750 help [Re: MR_P_BODY] #1002651 06/01/11 01:24 AM 06/01/11 01:24 AM
Joined: Apr 2007 Posts: 1,390 CA. RAY1969CARS OP pro stock
RAY1969CARS OP pro stock Joined: Apr 2007 Posts: 1,390 CA.	Quote: Quote: what is the end # what doz it refer to ???? 4779-(?) 4779-1 4779-2 4779-3 Latest version of that carb(usually a correction or up-date) thanks

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