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Re: Holley Carb Gurus-Help Needed [Re: Cuda367] #1002355 05/30/11 07:59 AM 05/30/11 07:59 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: Many truck holleys had the idle screws in the rear metering block. And what would be the reason for that

Re: Holley Carb Gurus-Help Needed [Re: joedust451] #1002356 05/30/11 12:15 PM 05/30/11 12:15 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	Quote: Greg, thats an 800 DP. Most likely the jetting is 70-71 F/85 R, 50cc pump out back. The Holley 8156 used that linkage and it was a 750. BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: Holley Carb Gurus-Help Needed [Re: bigtimeauto] #1002357 05/30/11 03:41 PM 05/30/11 03:41 PM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	The metering blocks should have the list # on the top. If you could take a pic of that # we can read what it says.

Re: Holley Carb Gurus-Help Needed [Re: G-Money1320] #1002358 05/30/11 04:15 PM 05/30/11 04:15 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	Greg here is a break down on parts http://www.holley.com/data/TechService/Technical/Carb%20Numerical%20Listing.pdf

Re: Holley Carb Gurus-Help Needed [Re: bigtimeauto] #1002359 05/30/11 06:41 PM 05/30/11 06:41 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.	Quote: Quote: Greg, thats an 800 DP. Most likely the jetting is 70-71 F/85 R, 50cc pump out back. The Holley 8156 used that linkage and it was a 750. What are the chances of it being a 8156 but you could be right, I'm bettin its a 4780 myself, but i've been wrong before. 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 Carb Gurus-Help Needed [Re: joedust451] #1002360 05/31/11 09:00 PM 05/31/11 09:00 PM
Joined: May 2007 Posts: 1,675 Mi. G-Money1320 OP top fuel
G-Money1320 OP top fuel Joined: May 2007 Posts: 1,675 Mi.	First thanks for the helpful info Here are some #'s the PV block has 7047 then 47812 on top and the rear 1 has 1116t with a deep 3 underneath. The base has 12R-4770B and 4895. The butterflies are 172's. Can I use the 800 base on the 650 with all the rest of the 650 parts and have a decent carb? 416 stroker from Nick at Compu-flow. 11.14 in full street trim. Seems like a new best every time out. 11.06 open headers----so far!!

Re: Holley Carb Gurus-Help Needed [Re: G-Money1320] #1002361 05/31/11 09:20 PM 05/31/11 09:20 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	Quote: First thanks for the helpful info Here are some #'s the PV block has 7047 then 47812 on top and the rear 1 has 1116t with a deep 3 underneath. The base has 12R-4770B and 4895. The butterflies are 172's. Can I use the 800 base on the 650 with all the rest of the 650 parts and have a decent carb? My best guess here is its a 8156 and it does have the proper rear metering block and wrong front block. Have you looked to see if it has the rear idle circuts drilled? If all four butterflys are 172 or 2 are 173's the base plate is a 750. 800 and 850's used 180's. I'm still thinking your 650 is much better than what you are showing us here. Why don't you do some mods to the 650? like cut the air horn, blend the top and then do some tuning with the pumps, cams and squirters. BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: Holley Carb Gurus-Help Needed [Re: bigtimeauto] #1002362 05/31/11 09:25 PM 05/31/11 09:25 PM
Joined: May 2007 Posts: 1,675 Mi. G-Money1320 OP top fuel
G-Money1320 OP top fuel Joined: May 2007 Posts: 1,675 Mi.	Thats probably the way im going, the horn is already cut on the 650 so I guess a good cleaning and tweaking is in order. The carb in question was just in better overall shape and looked like a better starting point, but now appears to be more of a hassle 416 stroker from Nick at Compu-flow. 11.14 in full street trim. Seems like a new best every time out. 11.06 open headers----so far!!

Re: Holley Carb Gurus-Help Needed [Re: G-Money1320] #1002363 05/31/11 09:28 PM 05/31/11 09:28 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	save it though. When you learn a little more or can get somebody to help you its a nice carb. BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: Holley Carb Gurus-Help Needed [Re: bigtimeauto] #1002364 05/31/11 09:33 PM 05/31/11 09:33 PM
Joined: May 2007 Posts: 1,675 Mi. G-Money1320 OP top fuel
G-Money1320 OP top fuel Joined: May 2007 Posts: 1,675 Mi.	Thanks, too bad all you carb experts are days away Maybe Raff will put his touch on it when I see him 416 stroker from Nick at Compu-flow. 11.14 in full street trim. Seems like a new best every time out. 11.06 open headers----so far!!

Re: Holley Carb Gurus-Help Needed [Re: G-Money1320] #1002365 05/31/11 09:56 PM 05/31/11 09:56 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	Quote: Thanks, too bad all you carb experts are days away Maybe Raff will put his touch on it when I see him That can happen

Re: Holley Carb Gurus-Help Needed [Re: G-Money1320] #1002366 05/31/11 11:38 PM 05/31/11 11:38 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.	Quote: Can I use the 800 base on the 650 with all the rest of the 650 parts and have a decent carb? Yes you can, 650-800 use the same base That 47812 metering block is from a 4781-2 850dp. Both metering blocks on the 850dp used PVs, so if it has no idle mix screws, its a rear MB. Last edited by joedust451; 05/31/11 11:43 PM. 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

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