No Power Slugish 1985 4x4

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No Power Slugish 1985 4x4

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Blazer >> Mechanical & Maintenance >> General Tech Help >> 1st Gen (1983-1994) Tech >> No Power Slugish 1985 4x4

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No Power Slugish 1985 4x4 - 8/5/2008 12:19:38 PM

muszyngr

Posts: 22
Joined: 3/24/2008
Status: offline

Is there anything I can do to make my stock 85 Blazer have more power. On the freeway I have the pedal to the metal and I sit there and wait for the thing to get up to speed, it is rediculously slow. I have had the truck for a few months and it is the most slugish car I have ever owned. It is the 2.8 L V6 but come on it is weak. I think the truck has 240,000 miles on it.

Had compression checked at a shop and they said it was fine, but I think they meant all cylinders are about the same, they didn''t say what the compression was. What should the compression be anyway? Recently had a tune up done and an oil change. Also had a brand new timing chain put on, but that made no difference.

Is it something with the carb? Vent hoses? Fuel, fuel pump, fuel filters? Exhaust manifold leak?

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1985 S10 Blazer 4X4 5spd V6 2.8L

Post #: 1

RE: No Power Slugish 1985 4x4 - 8/5/2008 12:28:36 PM

swartlkk

Posts: 14499
Joined: 5/1/2005
From: Waterloo, NY
Status: offline

I used to have an ''85 S10 4x4 2.8L and it too was a dog no matter what I did to it. It is the anemic 2.8. Nothing that can be done but toss the engine aside and do a 3.1 or 3.4 swap. You could go all out and get a different transmission for a v8 swap as well, but that isn''t as easy as putting a larger 60 degree v6 in.

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Kyle-

04 Rainier
My Restoration Projects
Please Do Not PM for Tech Help

(in reply to muszyngr)

Post #: 2

RE: No Power Slugish 1985 4x4 - 8/6/2008 9:12:47 AM

Sunshine Coaster

Posts: 65
Joined: 9/22/2007
From: Sunshine Coast, B.C. Canada
Status: offline

On the flip side to this I put in a pro-built stock 2.8 in my ''86 4x4 about 2 years ago and now have just over 30k kms. on it and it runs just fine. There seems to be ample power, bogs a little on long hills but over-all I''m happy with the outcome. The one thing I wish I had was a 5th. gear. Going 80kph. it seems to be revving pretty high.

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1986 Blazer 4x4...2.8 liter 4 speed. 63k original miles
2001 Neon R/T..210 HP. with mods
1978 Chevy 1/2T truck..380 HP. 350...almost an antique

(in reply to muszyngr)

Post #: 3