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11-06-2006, 10:05 PM
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#26 |
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Registered User
Join Date: Jan 2001
Location: Lincoln, Nebraska
Posts: 2,145
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Re: Original Big Block Truck?
If the rear end is 3:54 gears and it looks like the original DANA 60 it was only installed behind the 402 turbo 400 in 1971 and 1972 for sure. At least the last 15 or so big block C20's I have owned or parted all came with 3:54s behind that engine. And all have had a bolt in high hump floor in the 71 and 72's. Now the 68-70 years I have seen turbo 400's under low hump floors too.
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'66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed" |
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11-06-2006, 11:59 PM
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#27 |
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Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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Re: Original Big Block Truck?
3.54 was the standard rear ratio in BB C20's ..but you could get an optional gear ratio...such as 4.10.
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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