81-91? crew cab duelly info

[slammd72]

i was wondering exactly what years the crew cab duelly or the crew cab longbed fleetside was made. b/c i saw a 91 on ebay and it wasnt the 88-98 body style. also what year would be the first year the 454 was multiport fuel injected? thanx

[N2TRUX]

The crewcab was made from 73-91 in the same body style.....

[bisquik65]

73-91 the R/V style didnot change till 92 and the fullsize blazers were also 73-91 old body style. It changed in 92 also. Left over parts i guess

[slammd72]

ok so then 81-91 would be correct if i was looking for something like this. also any info on when throttle body went to multiport. i know that the first year of throttle body was 87..right?

[bisquik65]

87-91 were all tbi and 92-4 were tbi 95 went multi post/vortec

[77gmcjoe]

Originally Posted by bisquik65

87-91 were all tbi and 92-4 were tbi 95 went multi post/vortec

'95's were still TBI, vortecs (port injection) started in '96.
I don't recall for sure, but I think, starting in '88, they made duallys in the new body style, available in regular and extended cab. (Not real sure if you could get 'em in '88 or if they came later) If you wanted four doors, you got the "old" body style.

Joe

[1969 GMC]

I believe that the only R and V series trucks made from 88-91 were K5's, Suburbans, and 1 ton cab & chassis. The 1/2, 3/4, and 1 ton pickups were all the "new" body style. At least I think thats how it is.

[1FaastC10]

Originally Posted by 1969 GMC

I believe that the only R and V series trucks made from 88-91 were K5's, Suburbans, and 1 ton cab & chassis. The 1/2, 3/4, and 1 ton pickups were all the "new" body style. At least I think thats how it is.

the crewcabs did not get the new bodystle in 1988-1991, they switched in 1992

[N2TRUX]

Originally Posted by 1969 GMC

.... The 1/2, 3/4, and 1 ton pickups were all the "new" body style. At least I think thats how it is.

Close, but not quite. The 1/2 and 3/4 ton did change in 88 to the new body style. The 3/4 ton crewcabs, and "all" 1 tons were still the "classic" body style till 92....

Originally Posted by 77gmcjoe

'95's were still TBI, vortecs (port injection) started in '96.

Joe you are correct on 96 being the first year for the port injected (Vortec) motor. They changed to the newer style dash and seats in 95, but the Vortec motor was not available till 96....

[ElGracho]

Originally Posted by N2TRUX

Close, but not quite. The 1/2 and 3/4 ton did change in 88 to the new body style. The 3/4 ton crewcabs, and "all" 1 tons were still the "classic" body style till 92....

Actually, GMCJoe has it right. The crewcabs, blazers and subs were the only ones that made it all the way to 91 with the old body style. Duallys and non crew cab one tons came out on the new body style starting in 1988 with the rest of the pickups.

Here are a couple for sale:
1988 GMC Dually
http://www.automart.com/vehicledetail/adid-6810324
1989 1 ton 4x4
http://www.automart.com/vehicledetail/adid-5880273
1990 Dually
http://www.automart.com/vehicledetail/adid-6580855

[N2TRUX]

Originally Posted by N2TRUX

....The 3/4 ton crewcabs, and "all" 1 tons were still the "classic" body style till 92....

Ooops, I left something out. That was supposed to say and "all" 1 ton crewcabs were still the "classic" body style till 92 since that is what he was asking about..

[77gmcjoe]

Originally Posted by N2TRUX

Joe you are correct on 96 being the first year for the port injected (Vortec) motor. They changed to the newer style dash and seats in 95, but the Vortec motor was not available till 96....

Yeah, my family's business has a '95 ext cab dually and a '96 crew cab dually, both with 454's. The '96 will run circles around the '95. There's actually been times when pulling a heavy trailer with very little tongue weight that I've fried all four rear tires on the '96 pulling away from a stop!
Of course, our '01 Duramax dually would pull them both backwards. At the same time!

Joe

[James670X]

The 1ton crew cab dually was made in the old body style from 1973-1991 (designated as either C=2wd or K=4wd from 1973-1986, from 1987-1991 designated as either R=2wd or V=4wd), the 3/4 and 1ton single rear wheel crew cabs again were made from 1973-1991 (see designations above), however I have been told that pre 1977 4x4 single rear wheel 1tons were not factory built rather they were Napco conversions, therefore they are quite rare (some people call HD3/4tons 1tons).
The First year of MPFI (multi port fuel injection) was 1996 (Vortec). 1987-1995 they were TBI (throttle body injection).
The Blazer/Jimmy, Suburban, 3/4ton crew cab, 1ton reg. cab dually (some of them), 1ton cab and chassis, 1ton single rear wheel crew cab, and finally 1ton dually crew cab remained as "old" body styled trucks from 1988-1991.