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Holley Carb delima build on old or buy something else? #375038 07/14/09 02:42 PM 07/14/09 02:42 PM
Joined: Jul 2009 Posts: 237 Redding,CA USA 440charger500 OP enthusiast
440charger500 OP enthusiast Joined: Jul 2009 Posts: 237 Redding,CA USA	So the charger has a new healthy 440 in it and I think the carb is alittle small. The carb is a holley 4150 mech 650 DP with a 750 proform body older 2 corner idle. I raced the car last weekend and ran 12.80 @106, the motor did'nt seem to pull hard on the top end. I run 3.91 gears with a 27" hoosier quick time. Question is should I trick out the carb I have with AED performance billet base plate and all the cool race accessories, or look for something else. I want to make this thing really run hard. Anthony

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375039 07/14/09 02:52 PM 07/14/09 02:52 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Time for something bigger and better..... 950dp

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375040 07/14/09 02:53 PM 07/14/09 02:53 PM
Joined: Nov 2003 Posts: 6,293 Rock Springs Bob_Coomer master
Bob_Coomer master Joined: Nov 2003 Posts: 6,293 Rock Springs	The carb is definatly holding you back some, but isnt costing you as much as you think. What do you have for a fuel system now? It could be running out of fuel on topend, which might tend to fool you thinking its the carb. It would be nice to monitor fuel pressure down the track. Also have you double check total timing etc? I would make sure it was getting plenty of fuel, and the correct timing above 3500RPMS before I spent some money only to find out it doesnt help any. When Time to upgrade, just pickup one of those $100 ProForm main bodies, and use your old baseplate/linkage, and bowls/metering blocks. Those are very nice and well worth the money. [color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]

Re: Holley Carb delima build on old or buy something else? [Re: Bob_Coomer] #375041 07/14/09 03:04 PM 07/14/09 03:04 PM
Joined: Jan 2003 Posts: 9,982 Ansonia, CT C CJK440 master
CJK440 master C Joined: Jan 2003 Posts: 9,982 Ansonia, CT	Looks like he already has a proform 750 body which I think is supposed to flow 800+ because it has no choke horn. 2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"

Re: Holley Carb delima build on old or buy something else? [Re: Bob_Coomer] #375042 07/14/09 03:56 PM 07/14/09 03:56 PM
Joined: Jul 2009 Posts: 237 Redding,CA USA 440charger500 OP enthusiast
440charger500 OP enthusiast Joined: Jul 2009 Posts: 237 Redding,CA USA	My fuel system is a new factory tank with new 3/8 fuel line and a carter hp pump. I have a holley adj fuel regulator set a 6 psi. I'm wondering about the base plate. The carb was a stock 650dp before I installed the proform 750 bodie. I'm thinking maybe I could just add a billet base plate with larger venturies, that should make the carb larger right? I'm on a slight budget also. So I trying to figure out what might help the most for my money. Last edited by 440charger500; 07/14/09 03:59 PM.

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375043 07/14/09 03:58 PM 07/14/09 03:58 PM
Joined: Jan 2005 Posts: 12,419 Kalispell Mt. H HotRodDave I Live Here
HotRodDave I Live Here H Joined: Jan 2005 Posts: 12,419 Kalispell Mt.	A carb spacer could help determine if a bigger carb might help. The extra plenum makes the carb apear bigger to the engine by buffering and smoothing out the pulses some. I am not causing global warming, I am just trying to hold off a impending Ice Age!

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375044 07/14/09 04:06 PM 07/14/09 04:06 PM
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 best thing to do right now would be to mount a gauge and see what it says(at the top end of the track)

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375045 07/14/09 04:08 PM 07/14/09 04:08 PM
Joined: Jan 2003 Posts: 9,982 Ansonia, CT C CJK440 master
CJK440 master C Joined: Jan 2003 Posts: 9,982 Ansonia, CT	Quote: I'm thinking maybe I could just add a billet base plate with larger venturies, that should make the carb larger right? The Venturis are in the main body. 2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"

Re: Holley Carb delima build on old or buy something else? [Re: CJK440] #375046 07/14/09 04:39 PM 07/14/09 04:39 PM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	How big is the cam? Quite possible you won't pick up much if thats all the motors got.

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375047 07/14/09 06:58 PM 07/14/09 06:58 PM
Joined: Nov 2006 Posts: 1,458 oklahoma F forphorty pro stock
forphorty pro stock F Joined: Nov 2006 Posts: 1,458 oklahoma	give us a few details. You might consider working on getting it to leave harder before you worry about upgrading your carb. At 106 mph you should be in the 12.40 range.

Re: Holley Carb delima build on old or buy something else? [Re: forphorty] #375048 07/14/09 08:22 PM 07/14/09 08:22 PM
Joined: Jul 2009 Posts: 237 Redding,CA USA 440charger500 OP enthusiast
440charger500 OP enthusiast Joined: Jul 2009 Posts: 237 Redding,CA USA	Ok how about I give the engine set up: 440 .40 over KB pistons -3.5 cc dome 10.25 to 10.5 compression Ported 906 heads stock valve size Isky 1.5 iron rockers bushed w/stainless shafts RPM intake gasket matched Thorly 1 7/8 headers Comp 285HL cam The car is set up with: 3800 Dynamics converter 8 3/4 3.91 gears pinion snubber 90/10's front /Rear Mopar drag shocks ESPO Extra heavy duty springs Ya and the car is heavy @ 4000w/driver

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375049 07/14/09 08:38 PM 07/14/09 08:38 PM
Joined: Feb 2005 Posts: 2,679 owt west Thread Ender1 master
Thread Ender1 master Joined: Feb 2005 Posts: 2,679 owt west	Question on the proform main bodies, I have a 700 DP #4778 whats the max i can step up to with my metering blocks and base plate?

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375050 07/14/09 08:50 PM 07/14/09 08:50 PM
Joined: Feb 2005 Posts: 4,316 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,316 Prospect, PA	Quote: Ok how about I give the engine set up: 440 .40 over KB pistons -3.5 cc dome 10.25 to 10.5 compression Ported 906 heads stock valve size Isky 1.5 iron rockers bushed w/stainless shafts RPM intake gasket matched Thorly 1 7/8 headers Comp 285HL cam The car is set up with: 3800 Dynamics converter 8 3/4 3.91 gears pinion snubber 90/10's front /Rear Mopar drag shocks ESPO Extra heavy duty springs Ya and the car is heavy @ 4000w/driver For what you have, the hp (i.e. mph) seems off. As others have said - first check the fuel pressure all of the way down the track.

Re: Holley Carb delima build on old or buy something else? [Re: BSB67] #375051 07/14/09 09:10 PM 07/14/09 09:10 PM
Joined: Jul 2009 Posts: 237 Redding,CA USA 440charger500 OP enthusiast
440charger500 OP enthusiast Joined: Jul 2009 Posts: 237 Redding,CA USA	I'll have to get another fuel gauge to rig up so I can see it going down the track. The engine only had about 150 miles on it so I didnt push it hard. I shifted @5500 rpm. I think there is another race in 2 weeks, off to the summit catalog.

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375052 07/14/09 09:26 PM 07/14/09 09:26 PM
Joined: Jul 2005 Posts: 1,472 Overland Park, KS. J Joshs68 pro stock
Joshs68 pro stock J Joined: Jul 2005 Posts: 1,472 Overland Park, KS.	My I rebuilt a carb for my charger, I had the cost of the old carb, the cost of the rebuild kit , all my time in the process. I tried a Bigs 950 new and setup for my car, WOW is all I can say, I have almost even money in the two carbs, but I wish I would have just gone this route in the first place. shop around , deals are out there.

Re: Holley Carb delima build on old or buy something else? [Re: Joshs68] #375053 07/14/09 09:32 PM 07/14/09 09:32 PM
Joined: Jan 2003 Posts: 999 British Columbia T toddd super stock
toddd super stock T Joined: Jan 2003 Posts: 999 British Columbia	Have you tried to borrow another carb to try before you spend your $$$$$. My vote is for a 950HP

Re: Holley Carb delima build on old or buy something else? [Re: toddd] #375054 07/15/09 01:15 AM 07/15/09 01:15 AM
Joined: Jul 2009 Posts: 237 Redding,CA USA 440charger500 OP enthusiast
440charger500 OP enthusiast Joined: Jul 2009 Posts: 237 Redding,CA USA	I just discovered BIGS carbs, looks good but I just have'nt heard much about them.

Re: Holley Carb delima build on old or buy something else? [Re: 440charger500] #375055 07/15/09 11:54 AM 07/15/09 11:54 AM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	Quote: I'll have to get another fuel gauge to rig up so I can see it going down the track. The engine only had about 150 miles on it so I didnt push it hard. I shifted @5500 rpm. I think there is another race in 2 weeks, off to the summit catalog. I think theres more in it with more rpm...but that might lead to a single plane intake and I don't want to offend the RPM guys out there....

Re: Holley Carb delima build on old or buy something else? [Re: RemCharger] #375056 07/16/09 01:53 AM 07/16/09 01:53 AM
Joined: Jul 2009 Posts: 237 Redding,CA USA 440charger500 OP enthusiast
440charger500 OP enthusiast Joined: Jul 2009 Posts: 237 Redding,CA USA	Well tonight the 440 got a taste of an 850DP annular carb. It seemed to really run. Now I need a test&tune night at the dragstrip. The fiber glass plant down the street is probably getting tired of me using there staight-away.

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