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Tech & Fab
the perfect differential gearing?
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<blockquote data-quote="RustyC" data-source="post: 647584" data-attributes="member: 1997"><p>LS engine , TH400? trans, 4.3 atlas and gear ratios below.</p><p>5.13 1,2,3 54.71, 32.65,22.06</p><p>4.56 1,2,3 48.70, 29.06, 19.64</p><p>3.73 1,2,3 39.78, 23.74, 16.04 ratios in each gear.</p><p></p><p>In my opinion on the east coast about a 33 to 1 ratio with V8 torque feels low enough for me. That is dry crawling or good of traction as we get down here. </p><p>I had 25 to 1 ratio behind a 5.3 , TH350 (1800 stall) , 205 and it worked ok but was too high to me. It felt really "racey" and would be great for that application.</p><p> I recently changed to 30 to 1 and feels much better, to go lower I would have to replace the NP205.</p><p></p><p>The 4.56 would give you a really low first, usable 2nd and still have 3rd for between trails, plus high range. Budget friendly too as stated above.</p></blockquote><p></p>
[QUOTE="RustyC, post: 647584, member: 1997"] LS engine , TH400? trans, 4.3 atlas and gear ratios below. 5.13 1,2,3 54.71, 32.65,22.06 4.56 1,2,3 48.70, 29.06, 19.64 3.73 1,2,3 39.78, 23.74, 16.04 ratios in each gear. In my opinion on the east coast about a 33 to 1 ratio with V8 torque feels low enough for me. That is dry crawling or good of traction as we get down here. I had 25 to 1 ratio behind a 5.3 , TH350 (1800 stall) , 205 and it worked ok but was too high to me. It felt really "racey" and would be great for that application. I recently changed to 30 to 1 and feels much better, to go lower I would have to replace the NP205. The 4.56 would give you a really low first, usable 2nd and still have 3rd for between trails, plus high range. Budget friendly too as stated above. [/QUOTE]
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