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 2.8 GM V6 intake manifold interchangability?
#560783
01/31/05 06:08 AM
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Joined: May 2002
Posts: 671
OP
Rock Warrior
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Are the TBI intake manifolds for the 2.8's all interchangable?
I have a lead on one that I would like to have bored out to match a 4.3 throttle body to reduce the out of service time when I swap, but it has a different part number. It's off a '90 S-10, but it looks identical to the one on my '91 Trooper (well, as much as I can tell without taking mine off and setting them side by side).
Is this just a GM/Isuzu part number difference, or are there other quirks to look out for?
TIA
Jay
1991 Trooper - DEAD! 2.8 V6, 5 spd, 4WD, HD clutch, 2.25" exhaust, EPROM Chip, KC/Hella, Aisin hubs, Rancho 9000X's, Panasonic/Infinity/Alpine My Pics
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 Re: 2.8 GM V6 intake manifold interchangability?
[Re: Pyro4117]
#560784
01/31/05 06:19 AM
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Joined: Aug 2000
Posts: 4,868
Roll Me Over
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This may be an urban myth, but try dropping the first and last number of the Isuzu part number, and you may find the Chevy number.
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: Pyro4117]
#560785
01/31/05 06:23 AM
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Joined: Sep 2003
Posts: 1,871
Body Damage is Cool
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yeah man I'm pretty sure they are the same. I heard if you take the gm part number, and take the first and last number off, and thats the isuzu part number.Or the other way around? But i'm like 98% sure there the same manifolds <img src="/forums/images/graemlins/cheers.gif" alt="" />
89 trooper, tera low t-case gears,5.38's, 3" indy4xsus lift3"body lift,safari snorkle,warn winch,custom bull bar,custom rock sliders,warn hubs,35x13.50r15,custom rear bumper trooper pics
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: Jim_Paget]
#560786
01/31/05 04:21 PM
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Joined: Nov 2004
Posts: 128
Wheeler
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Not an urban myth IMO, I have ordered alternator braces for my 2.8L V6 when the braces broke and the Isuzu parts guy gave me the Isuzu parts number and told me to drop the first and last digits. I did so and ordered the parts faster and cheaper thru the local Chevy dealer. AFAIK, this would only apply to engine parts on the GM 2.8L. This also worked on a replacement Power Steering resevoir and oil filler cap... <img src="/forums/images/graemlins/kewl.gif" alt="" />
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: Pyro4117]
#560787
01/31/05 10:36 PM
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Joined: May 2002
Posts: 671
OP
Rock Warrior
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Well, the part # theory didn't help. The part # on the one for sale is 14089802, mine is 10087672.
If it was a little cheaper I might take a flyer on it, but it's off eBay (typical small fuzzy pics), so maybe I'll keep cruising the junkyards to find one I that I can compare in person to mine.
Thanks,
Jay
1991 Trooper - DEAD! 2.8 V6, 5 spd, 4WD, HD clutch, 2.25" exhaust, EPROM Chip, KC/Hella, Aisin hubs, Rancho 9000X's, Panasonic/Infinity/Alpine My Pics
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: Pyro4117]
#560788
02/01/05 05:02 AM
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Joined: Jan 2005
Posts: 1,528
Body Damage is Cool
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whats the average rate for the 4.3?And does it fit the 2.8 or only the 3.4?
1996 Jeep Grand Cherokee 5.2 with mods.Hughes Air gap intake , 52MM TB , ford injectors, 2 3/4" lift, Doug Thorley headers , HID headlights with LED , HID fog lights , glow gauges , a few others
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: barak]
#560789
02/03/05 01:15 AM
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Joined: Oct 2002
Posts: 2,285
Body Damage is Cool
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Do a search under my username under 4.3, I did a writeup that can answer some of your questions.
CHRIS
98 Amigo, 92 Pup
need a pickup 1st gen fuel level sender
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: Pyro4117]
#560790
02/03/05 01:52 AM
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Joined: Jan 2005
Posts: 1,528
Body Damage is Cool
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If I can't get a 3.4 right away , I think I might swap the 2.8 in , just to get rid of the worst of it , make it alittle easier later on.If I have the 2.8 in , could I pick up a 4.3 TB and put it on the 2.8 untill I find a good 3.4?Or will it only work on a 3.1 or 3.4?
Also , do I need the 4.3 intake manifold too and other parts for the 4.3?
1996 Jeep Grand Cherokee 5.2 with mods.Hughes Air gap intake , 52MM TB , ford injectors, 2 3/4" lift, Doug Thorley headers , HID headlights with LED , HID fog lights , glow gauges , a few others
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: barak]
#560791
02/03/05 04:14 AM
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Joined: Oct 2002
Posts: 2,285
Body Damage is Cool
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please do a search under my username under 4.3, I did a writeup that can answer some of your questions.
CHRIS
98 Amigo, 92 Pup
need a pickup 1st gen fuel level sender
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Re: 2.8 GM V6 intake manifold interchangability?
[Re: CPOM]
#560792
02/03/05 06:07 AM
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Joined: Jan 2005
Posts: 1,528
Body Damage is Cool
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I read your write up , but all I saw mentioned in it were the 3.1 and 3.4 , thats why I was asking if the 4.3 TB works on the 2.8 as well <img src="/forums/images/graemlins/smile.gif" alt="" />I can't afford 2700 right now for a new 3.4 , so will use the 2.8 till I can find a good used one or have the cash for a new engine.
1996 Jeep Grand Cherokee 5.2 with mods.Hughes Air gap intake , 52MM TB , ford injectors, 2 3/4" lift, Doug Thorley headers , HID headlights with LED , HID fog lights , glow gauges , a few others
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