Originally Posted by nathan_carmona
(Post 615798)
It runs well I just wanted to see if there were any cheap hp gains. Ya never till you ask so I asked :shutup:
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obviously not a good subject on this forum. maybe try a v6 camero forum? or some forum that deals with chevy motors. almost evry one here is guna be die hard 4.0s. i am
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Got an 88 S15 Jimmy, same engine.,
its impossible to kill, but its a dog, flat 100hp. Junkyard items... Compare headers from a 3.4 Camaro or Firebird. I would think a cam out of a 3.4 would be worth changing too, move the power band up but its a sacrifice to the low end power. Next is aftermarket. If you do the cam swap. http://www.race-mart.com/items/produ...789-detail.htm http://www.catalograck.com/ImgVD/EDE/3785-89.jpg they're cheap enough. The next step is pricey. Holley 390 CFM vacuum secondary. http://www.atlanticspeed.com/product...4&idcategory=7 http://www.atlanticspeed.com/product...20_general.jpg Don't let someone talk tell you that it will run fine with a Holley 600 or 650 on it. Because it won't. it will run, but it will loose all port velocity and be a pure dog. With the cam/intake/carb/header swap, I whould guesstimate your little v6 will be close to the 160HP mark. Remember to use new lifters on the cam, even if its a used cam. |
Originally Posted by nathan_carmona
(Post 615778)
one doesn't like dealing with error codes and ecu chips. One likes two screws to manage all air/fuel ratio and idle. One thinks it cheaper to rebuild carb rather than try to trouble shoot fuel injection system.
Not to be a smart @** about it but it's just cheaper and easier. :grin: |
Originally Posted by Caish
(Post 615889)
Got an 88 S15 Jimmy, same engine.,
its impossible to kill, but its a dog, flat 100hp. Junkyard items... Compare headers from a 3.4 Camaro or Firebird. I would think a cam out of a 3.4 would be worth changing too, move the power band up but its a sacrifice to the low end power. Next is aftermarket. If you do the cam swap. http://www.race-mart.com/items/produ...789-detail.htm http://www.catalograck.com/ImgVD/EDE/3785-89.jpg they're cheap enough. The next step is pricey. Holley 390 CFM vacuum secondary. http://www.atlanticspeed.com/product...4&idcategory=7 http://www.atlanticspeed.com/product...20_general.jpg Don't let someone talk tell you that it will run fine with a Holley 600 or 650 on it. Because it won't. it will run, but it will loose all port velocity and be a pure dog. With the cam/intake/carb/header swap, I whould guesstimate your little v6 will be close to the 160HP mark. Remember to use new lifters on the cam, even if its a used cam. |
Originally Posted by nathan_carmona
(Post 616085)
Is your 88 carburated? If so whats the cfm on it?
I wouldn't have bought the S15 if it was carb'd. I hate that POS GM used on the 2.8's. they was troublesome and impossible to tune. :hang: One side note if you use a cam out of a 3.4, make sure you use the 3.4 firing order if its not the same as the 2.8. Good Luck with it. :thumbsup: |
Junkyards are full of Chevy small blocks to help make that 2.8 faster. Fuel injection is far more reliable than any feedback carb ever produced. You can't polish a turd, hopping up a 2.8 is like putting lipstick on a pig.
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Originally Posted by nathan_carmona
(Post 615778)
one doesn't like dealing with error codes and ecu chips. One likes two screws to manage all air/fuel ratio and idle. One thinks it cheaper to rebuild carb rather than try to trouble shoot fuel injection system.
Not to be a smart @** about it but it's just cheaper and easier. :grin: |
U can polish a turd- seen it on mythbusters. But on the 2.8 its hard to do anything to it. Put an electric fan on it and maybe a bottle to spray it. They makes very limited stuff for go fast parts for that motor. Wish ya luck. Could do a 4.3 swap.
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why dont you get hp in other ways?
like a good cat back exhaust cold air intake throttle body spacer etc simple bolt-ons can accomplish a lot |
sell it and buy a 4.0???....IMO
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OP - I would go to S10forum.com - they're pretty helpful there and have lots of info on the 2.8. I had an 83 S15 with a carb'd 2.8.... worst engine ever, IMO. Everything I've owned has been faster, got better MPG, and all around better performing. Like everyone else says, ditch it for a better engine, it's not worth modding. A CAI will get you a few ponies...it did a little on mine.
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I know how to suck hp out of an engine, even this one, I was just hoping that maybe there were some oem parts from other vehicles that were better than whats on my hunk of crap.
I for those who suggested a new cherokee altogether, I agree. But unless you want to buy mine, I can't afford it. Or unless you wanna buy my 1990 integra or my 64 baja bug project car. |
how far along is the baja bug project?
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Originally Posted by Chompermy90xj
(Post 618323)
how far along is the baja bug project?
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