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Re: 60 ft issues
[Re: fast68plymouth]
#3077462
09/15/22 10:47 AM
09/15/22 10:47 AM
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Joined: Dec 2021
Posts: 1,127
Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,127
Loudoun County, VA
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Proform 11.14 @ 119.7
Holley 10.88 @ 123.7
This is a huge difference imo. Especially when you factor in the slower carb had a better 60’ time. Yeah, that's a HUGE difference for a basic carb swap like that... 4 MPH?!  Is there something out of kilter w/ the Proform that hasn't been noticed?
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: 60 ft issues
[Re: an8sec70cuda]
#3077522
09/15/22 01:29 PM
09/15/22 01:29 PM
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Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,363
Las Vegas
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IMO a few things i see in the OK video. First is converter converter converter...Your converter is not helping anything for sure I woudl go looser for sure there. Also I would work on "freeing" up the cars front end as well. Would also work getting the larger carb to work better, not a bug fan of the Holley"1000", I would consider a different option there(4500). IMO with what you have there I think it could benefit from more.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: 60 ft issues
[Re: Al_Alguire]
#3077650
09/15/22 08:47 PM
09/15/22 08:47 PM
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Joined: Jun 2014
Posts: 3,187
Md.
carnut68
OP
master
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OP
master
Joined: Jun 2014
Posts: 3,187
Md.
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IMO a few things i see in the OK video. First is converter converter converter...Your converter is not helping anything for sure I woudl go looser for sure there. Also I would work on "freeing" up the cars front end as well. Would also work getting the larger carb to work better, not a bug fan of the Holley"1000", I would consider a different option there(4500). IMO with what you have there I think it could benefit from more. I have a Dominator coming already have a Super Victor 4500. I'll lower the front and make sure the shocks are full loose. Converter will have to wait till after race season is over. I'm sure ATI can loosen it some. What effect does loosing the valve lash have? Other than lose some lift. The 950 was basically out of the box with the exception of moving IFR down and T slot restricters. Blue cam on the primary. It was jetted 10 sizes smaller than the 1000.
America First!
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Re: 60 ft issues
[Re: carnut68]
#3082122
10/01/22 05:56 AM
10/01/22 05:56 AM
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Joined: Jun 2014
Posts: 3,187
Md.
carnut68
OP
master
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OP
master
Joined: Jun 2014
Posts: 3,187
Md.
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Just an update. Went to a test n tune Friday. Got my 60 down into 1.47-1.48 from 1.54 -1.56. Lowered the front by an inch and softened the rear shocks a couple clicks. I put a new dominator on it from Dominic it worked great. Ran my best et of 10.66 twice. Jetted carb on last pass best 60 of 1.47 by the time slip it looked like 10.59 -60 pass, but dropped a valve. I have a bigger hammer with a smallish roller on the stand waiting.
America First!
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