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Re: picked up a 80688 holley 1050 to try
[Re: Thumperdart]
#2499487
05/23/18 01:56 PM
05/23/18 01:56 PM
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Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
OP
master
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OP
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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I put a 70 in and got 11/0.The main jet is 84 from factory.What is this telling us?
ps:I put 80 jets in and got 11.4 a/f Yes on the t-slot restrictors so here's my tune....... .040 IFR'S lowered .068-.070 idle bleeds .026-.028 hi bleeds .055 t-slots and .082-.088 jetting You need a vacuum gauge to check for the best power valve and one that comes in as you crowd the throttle while cruising at a steady state speed........too high, rich too soon, too low delayed enrichment.......... Thank you!!
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Re: picked up a 80688 holley 1050 to try
[Re: Clanton]
#2499543
05/23/18 04:18 PM
05/23/18 04:18 PM
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Joined: Feb 2003
Posts: 1,942
Metro Detroit
OUTLAWD
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,942
Metro Detroit
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looks like a nice carb for the coin...almost makes me want to pull the EFI off...
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater
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Re: picked up a 80688 holley 1050 to try
[Re: OUTLAWD]
#2499552
05/23/18 04:35 PM
05/23/18 04:35 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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looks like a nice carb for the coin...almost makes me want to pull the EFI off... Say it ain't so............. 
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: picked up a 80688 holley 1050 to try
[Re: Clanton]
#2499566
05/23/18 05:26 PM
05/23/18 05:26 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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Has anyone pressed in a lead plug and drilled it? I heard some have but best to drill n tap that way you can make changes easier and it's cleaner........... 
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: picked up a 80688 holley 1050 to try
[Re: Thumperdart]
#2499581
05/23/18 05:51 PM
05/23/18 05:51 PM
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Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
OP
master
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OP
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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Has anyone pressed in a lead plug and drilled it? I heard some have but best to drill n tap that way you can make changes easier and it's cleaner........... I just got the drill and tap plus the drill to remove the press in jet.Thanks for the help and I will get back to you in a few days.
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Re: picked up a 80688 holley 1050 to try
[Re: Clanton]
#2500256
05/25/18 11:37 AM
05/25/18 11:37 AM
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Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
OP
master
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OP
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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Thank you,I drilled and tapped a little holder for the set screws and is what I tested for drilling the carb and this should be stable for doing the set screws.
Last edited by Clanton; 05/25/18 11:54 AM.
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Re: picked up a 80688 holley 1050 to try
[Re: Clanton]
#2500259
05/25/18 11:45 AM
05/25/18 11:45 AM
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Joined: Jan 2003
Posts: 2,094
central texas
krautrock
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,094
central texas
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i chuck the set screws in my handheld drill.
last time i drilled some, i actually just put the drill bit in a regular vise, set screw in the drill, drill in one hand and the other hand spanned the drill and the vise to keep steady...
also, most common i think are 1/8" long screws for IFR's and 1/8" or 3/16" long screws for the t-slot
Last edited by krautrock; 05/25/18 11:46 AM.
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Re: picked up a 80688 holley 1050 to try
[Re: krautrock]
#2500263
05/25/18 11:52 AM
05/25/18 11:52 AM
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Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
OP
master
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OP
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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i chuck the set screws in my handheld drill.
last time i drilled some, i actually just put the drill bit in a regular vise, set screw in the drill, drill in one hand and the other hand spanned the drill and the vise to keep steady...
also, most common i think are 1/8" long screws for IFR's and 1/8" or 3/16" long screws for the t-slot I may have gone 3/16 but the shoulder[on press in jet] would have made it very deep so 3 threads are shallow and 5 are full contact on the set screw.
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Re: picked up a 80688 holley 1050 to try
[Re: Clanton]
#2500287
05/25/18 01:10 PM
05/25/18 01:10 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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I took my time measuring depth and threads[8] on the set screw,drill bit,tap and the 5/16 8-32 screw[0152806] sits flush with the edge.I ordered 100 brass set screws from fasten all[2.65$] that will be in Tuesday and I can drill a few and give it a try. I personally use 6-32 in brass and 1/8 in length and 8-32 in the same length then the 10-32's are longer of course..........
Last edited by Thumperdart; 05/25/18 01:11 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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