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4x4Poet · 01-24-2005, 01:04 AM

I don't know if the single rear u-bolts in axle-over configuration wouldn't be strong enough. I should have only said that the article did not convince me that his trailing arm "flip" with a new top axle perch would be strong enough using the single u-bolts for heavy duty 4x4 use. I don't have the expertise about the flip and so I am left wondering, that's all, After all, stock 2wd 3/4 ton trucks use the fat single rear u-bolts with no problems. I couldn't rightly advise you on the spring perch choices, though I'd try to use 1/4" steel, if feasable.

Interesting that he might not use front coils again. The only thing I can think of is 4-coil trucks can be a little bouncy in a gentle way. Maybe the lift, higher spring-rate coils, front straight axle, and 36" swampers all contributed to more bounce than a 2wd all-coil truck.

01-24-2005, 01:04 AM	#5
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	I don't know if the single rear u-bolts in axle-over configuration wouldn't be strong enough. I should have only said that the article did not convince me that his trailing arm "flip" with a new top axle perch would be strong enough using the single u-bolts for heavy duty 4x4 use. I don't have the expertise about the flip and so I am left wondering, that's all, After all, stock 2wd 3/4 ton trucks use the fat single rear u-bolts with no problems. I couldn't rightly advise you on the spring perch choices, though I'd try to use 1/4" steel, if feasable. Interesting that he might not use front coils again. The only thing I can think of is 4-coil trucks can be a little bouncy in a gentle way. Maybe the lift, higher spring-rate coils, front straight axle, and 36" swampers all contributed to more bounce than a 2wd all-coil truck. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup. Last edited by 4x4Poet; 01-24-2005 at 01:09 AM.