th350 vs 700r4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

al's71gmc · 07-16-2005, 12:49 AM

I've got a 71 gmc that i drive daily, and am fixing it up as I go. I'm wondering about swapping in a 700r4 to replace the turbo 350. My main reason for considering this trade is the extra gear and maybe a little better mpg. This truck fairly screams going down the hiway. Is this a swap that can be done without major modification? Any other issues I should be concerned about? Is there another 4 spd auto that would be a better swap?

07-16-2005, 12:49 AM	#1
al's71gmc 4 eyed fever Join Date: Jul 2005 Location: Eureka, Nevada Posts: 500	th350 vs 700r4 I've got a 71 gmc that i drive daily, and am fixing it up as I go. I'm wondering about swapping in a 700r4 to replace the turbo 350. My main reason for considering this trade is the extra gear and maybe a little better mpg. This truck fairly screams going down the hiway. Is this a swap that can be done without major modification? Any other issues I should be concerned about? Is there another 4 spd auto that would be a better swap?



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