TH400/t221 combo ever??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sakohntr · 01-25-2004, 12:57 AM

I am looking to build a swampbuggy this summer and want to make it light and bulletproof. The rockwell 221 weighs about half of a 205 and is still a geardrive. I could go with a 350 turbo but the 400's are the best auto trani ever built. I cant think of a combo that would have come with this in 68 or 69. thanks

1969 GMC · 01-25-2004, 02:21 AM

I have never heard of or seen a Rockwell behind any auto tranny, it seemed to be on the way out when the auto tranny in 4x4 GM trucks was on its way in. And when they did use autos in 4x4's, they were all th350's.

01-25-2004, 12:57 AM	#1
sakohntr Registered User Join Date: Mar 2002 Location: Floodwood Minnesota Posts: 1,057	TH400/t221 combo ever??? I am looking to build a swampbuggy this summer and want to make it light and bulletproof. The rockwell 221 weighs about half of a 205 and is still a geardrive. I could go with a 350 turbo but the 400's are the best auto trani ever built. I cant think of a combo that would have come with this in 68 or 69. thanks __________________ 1967 K30 Napco 292/SM420 original paint 30k miles 1968 K60 Napco 396/5spd. dbl frame 52" michelins 1969 K10 SWB GMC 454/4spd 6" 35's posi,hooks 1972 C30 longhorn,BB/AT,A/C,Tilt,Toolbox,lokr 1987 K20 Chevrolet Suburban. 6" lift. 5.7L/TH400 1979 K60 GMC Coleman 4x4, 427/Allison.

01-25-2004, 02:21 AM	#2
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	I have never heard of or seen a Rockwell behind any auto tranny, it seemed to be on the way out when the auto tranny in 4x4 GM trucks was on its way in. And when they did use autos in 4x4's, they were all th350's. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650



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