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Old 10-04-2003, 12:40 PM   #1
Z28Owner
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Just finished auto swap...

Linkage came in from Kugel yesterday and finished up my swap so I can drive it now. Anyways the speedometer gear is off, which I will change later. But for now I was just gonna use the tach to monitor my speed and was just wanting to know if the final drive gear is the same on a TH350 as in the factory 3 speed. And is there any calculators for figuring up the gear I need. I have a 307/350 LWB truck with 4:11 gear and 235/70/15 tires. Thanks.
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350/350 3:42 eaton
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Old 10-04-2003, 12:52 PM   #2
70c10
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Is this what you need? http://www.tciauto.com/components/speedometer_gears.htm
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1970 C/10 Fleetside w/Ghost Flames
Lowered 4.5" front and 4" rear (Raked)
355/350 Turbo w/shift kit
10" Redneck Performance Verter w/2500 stall
Hooker Super Comps part#2808-1
Performer RPM Air-Gap
12 Bolt w/3:73 gears- Eaton Posi
Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads
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Old 10-04-2003, 10:13 PM   #3
project1971
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try this i used it and was dead on. http://www.cvsr.net/php/links.php
the final drive for the 3 speed and the th350 is 1:1 all the final drives are 1:1 unless it has over drive the the 3rd gear is 1:1
hope this helps
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Old 10-06-2003, 06:56 PM   #4
justplainjoe
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How hard was the swap? What all was involved. I am wanting to do the same on my 72 GMC. Thanks JPJ
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