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  #1  
Old 04-07-2001, 10:32 PM
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Default What year did GM change to IFS?

What year did GM change from solid axle to IFS?

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  #2  
Old 04-07-2001, 10:45 PM
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Default Re: What year did GM change to IFS?

88

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Old 04-07-2001, 11:56 PM
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Default Re: What year did GM change to IFS?

This gets kind of confusing because GM didn't convert them all over at the same time.

1988 was the first year for the 1/2 ton IFS trucks. All 1/2 ton trucks made that year were IFS.

1992 was the first year that the Blazers, Jimmys, and Suburbans were IFS. Also the first year that ALL of the 1 tons were IFS, making this the first year that GM only made IFS 4x4 trucks.

I think 1991 was the first year you could get IFS 1 tons and 3/4 tons, but I am not certain. Either 90 or 91 you could get 3/4 and 1 ton IFS trucks, but you could also still get them as the old style solid axle trucks.

Confusing, huh?[img]/wwwthreads_images/icons/tongue.gif[/img]

1992 Blazer Sport, 350 TBI, 3" Flowmaster 40 DF, 4L60, K&N, Rancho 2.5" lift, 285/75R16's on 16x8 Bajas [img]/wwwthreads_images/icons/laugh.gif[/img]
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Old 04-08-2001, 12:51 AM
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Default Re: What year did GM change to IFS?

Yeah, it's confusing, just switch to ford, you know you always have the same thing - crap, nah just kidding.

The 88-91 burbans are very nice, so are the blazers.

Resurrection Joe - Head Commander/Unit Seven
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Old 04-08-2001, 02:07 AM
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Default Re: What year did GM change to IFS?

Here's what I think:

88 was first year for IFS 1/2 tons
88 was first year for IFS 3/4 tons
92 was first year for IFS blazers/jimmies
92 was first year for IFS suburbans
92 was first year for IFS 1 tons

I do not think you ever had the choice of choosing between IFS and a solid axle on the same year truck.

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Old 04-08-2001, 07:29 PM
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Default Re: What year did GM change to IFS?

Actually if I remember right there was atleast one year where they had IFS light duty 3/4 tons and solid axle heavy duty 3/4 tons. But lets not forget the 2 1/2 ton and larger class - they're still solid axle!

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Old 04-08-2001, 11:25 PM
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Default Re: What year did GM change to IFS?

I know a guy with a 1991 IFS 1 ton, and another guy with a 1991 solid axle 1 ton. I'm still not sure about the 3/4 tons, or if the 3/4 ton LD (6 lug) came around at the same time as the regular 3/4 ton (8 lug).

1992 Blazer Sport, 350 TBI, 3" Flowmaster 40 DF, 4L60, K&N, Rancho 2.5" lift, 285/75R16's on 16x8 Bajas [img]/wwwthreads_images/icons/laugh.gif[/img]
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Old 04-09-2001, 10:45 AM
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Default Re: What year did GM change to IFS?

AJMBLAZER is Right on everything he said[img]/wwwthreads_images/icons/smile.gif[/img]
I can just add a little clarification, either this will help, or just make it even more confusing[img]/wwwthreads_images/icons/crazy.gif[/img]

1990 1 tons "regular cab" and "extended cab" were IFS (I have a 1990 1 ton K3500 extended cab IFS)

But the crewcab(4door) was still solid axle and the old body style they changed in 91, So all 92 crewcabs were IFS.

1/2 ton changed in 88
3/4 ton changed in 88
1 ton reg & ext cab changed in 90
and 1 ton crewcab changed in 92

Suburban and Full size Blazers & Jimmy's all changed in 92

Scooby Dooby Doo !!!
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Old 04-09-2001, 04:07 PM
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Default Re: What year did GM change to IFS?

You forgot the cab and chassis trucks Scooby! Those were still the "old" body style until 91 and the 4x4's had a solid axle too. You could also get a 4 bbl carb with a C7P 10,500 lb GVW chassis. Otherwise you got the TBI 454. Dad had an 89 2wd flatbed like this. Reg and ext cab 1 tons had IFS in 88. Dad had an 88 K3500 ext cab with a TBI 454 15/ld2500 were availible by about May June 87 as 88's. 89 a HD 2500 was intro'd with a 350 only. To get a 454 and 6.2 you had to get a 3500 SW 8600 gvw truck. 90 the 8600 2500 was availible with all three motors and a 9200 SW 3500 was intro'd.
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Old 04-09-2001, 05:04 PM
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Default Re: What year did GM change to IFS?

The only thing I am confused about on this subject is that the phone company here in my town has the new body (88-98) with the (88-94or95) interior and they are 4x4 single wheel 1 tons with solid axles in front.

Were they converted or what??

>>>>>>>>>>>>&g t;>>>>>>>>>>>> >>>>>>>>>>>4X4
|\*\..../*/|
|.\*\../*/.|
|..\*\/*/..|
|../*/\*\..|
|./*/..\*\.|
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