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06-03-2021, 08:24 PM
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#1 |
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Member
Join Date: May 2020
Posts: 492
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Rear gear selection...
So... what gear ratio is common on 396 or 427 combos?
From past experience I'm guessing 4.88 or 5.13? Would that be in the ballpark? How tight do those things turn? (in a stocker?) 7000? 7500? MPH 130ish? |
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06-04-2021, 06:20 AM
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#2 |
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Senior Member
Join Date: Feb 2008
Location: Georgetown, Indiana (close to Louisville, KY)
Posts: 773
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Re: Rear gear selection...
A lot of factors to consider. Oval or Rec port? Weight of car? HP rated and dynod? 1/4 or 1/8 racing.
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06-04-2021, 07:44 AM
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#3 |
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Senior Member
Join Date: Feb 2010
Posts: 507
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Re: Rear gear selection...
What Terry said...
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06-04-2021, 08:11 AM
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#4 |
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Senior Member
Join Date: Feb 2009
Location: Columbus, Indiana
Posts: 522
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Re: Rear gear selection...
Tire diameter should be considered as well. Radial or bias ply will play into the equation too.
Ernie Neal SS 354 |
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06-04-2021, 08:53 AM
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#5 |
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Junior Member
Join Date: Apr 2017
Posts: 93
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Re: Rear gear selection...
Back in 1992 I went 10.54 at 123 mph with a 5.13 at the Snowbird Nationals 29.5 Firestone slick crossing 7600 rpm.
Nothing burger cast crank BBC 427 600 lift flat tap, steel Merlin heads 3475 all steel Nova That was flying in 1992 home built on $10.00 bucks an hour. I'd put a 5.13 in it. I learned the easy way in 92, the first 100 ft makes you. |
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06-04-2021, 10:08 AM
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#6 |
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Member
Join Date: Dec 2006
Location: Charlevoix, MI
Posts: 447
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Re: Rear gear selection...
Wasn't the 5.00 gear created for these combos?
__________________
Bobby Lundholm 3516 G/SA |
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06-04-2021, 11:33 AM
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#7 | |
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Member
Join Date: Oct 2017
Location: Bay City Texas
Posts: 385
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Re: Rear gear selection...
When I at Ford they were making 5.20s and 5.00 cause the 5.14 gear is a week design because of the tooth count.
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06-04-2021, 05:27 PM
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#8 | |
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Member
Join Date: May 2020
Posts: 492
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Re: Rear gear selection...
Quote:
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06-04-2021, 05:44 PM
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#9 | |
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Member
Join Date: May 2020
Posts: 492
Likes: 511
Liked 467 Times in 225 Posts
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Re: Rear gear selection...
Quote:
Square port stuff... A/S, B/S, etc. Looking at some of the heads up races, can't tell how hard they are running these things, just got me curious. Putting a car together and trying to decide what I want to do with it... Long way to go yet... |
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06-04-2021, 08:39 PM
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#10 |
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Member
Join Date: May 2020
Posts: 492
Likes: 511
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Re: Rear gear selection...
Thanks.
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