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Clutch

Geezer
Apr 7, 2017
5,189
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Brick NJ
Ok if I've done my calculations correct?
A 3.23 with a 215/70/14 and a th350 it will be 2724 RPM at 65 I think?
 

79 USA 1

Royal Smart Person
Sep 2, 2011
1,065
2,039
113
Cheektowaga, New York
If you had the 3.08 gear and wanted to go to a 3.23 or up you can run a spacer or "thick gears" to work with the 2 series carrier. just does not work the other way.
Your calculation sounds about right on the 3.23's at 65 mph. I ran 3.42's with a th350 and a 225 70r 14 and it put me at about 3200 at 65.
 

Clutch

Geezer
Apr 7, 2017
5,189
10,913
113
Brick NJ
I have no idea on the calculation, but l'll reply OUCH ! What was the car with 4.11's a 1/8th strip car ? Lol
Lol no it's a long story tho. My brother had a 88 Monte SS 305 200r4 that rear was in it when he got it at the time I was a car dealer and I was fixing a wrecked 87 SS to sell with a 3.73 posi and a bent axel so I swapped them and gave him the good stuff for his driver and I put a 6 cylinder open 79 Cutlass unknown gear rear in the wrecked 87 because I wanted the Richmond 4.11s and summit carrier for my 83 Cutlass that I was street racing with a SBC at the time we'll somehow all these years later I still have that rear it's in my 87 Cutlass with a 455 olds and an M-21 but it's to week and has to much gear so I'm putting an 8.5 in it and I figured some of the parts would be good for my low buck 78 Cutlass W-31 build check out my other posts I have a wife and 2 daughter's the cars are what keeps me sane thanks for your help
 
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bob64

G-Body Guru
Mar 30, 2017
713
677
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Niagara Falls, Canada
Yes l read a post of yours , about your daughter loving that one car and wanting it , that's cool !! I hear ya about the only thing that keeps you sane !! I got 6 daughters and 2 ex's ! The Camaro in my Albums, my youngest helped build so it's her car when she turns 16. If it wasen't for the cars l'd be a drunk or worst ! Lol, 7 day drunk that one time of the month !
 
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455'ed80Regal

Master Mechanic
Nov 3, 2010
467
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Lincoln, MO
I thought Richmond made a 3.08 gear set with a thicker ring gear that will fit the 3 series carrier?
 
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