IM getting ready to drop a fresh GM 2.8 shortblock into my 85 fiero GT and need to get a cam for it. I wondered if anyone here has used any aftermarket cams and which one worked well as far as extra power with the stock computer. I dont want to get into a new chip and etc. just looking to optimize whats there. If the stock fiero gt cam is the best option I will go with that. looking to stay with a hyd. flat tappet cam. thanks for any help!
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I wouldn't use the word optimize in regards to using the stock tune, as it is not optimal on a stock cam, let alone any other cam. If you want the best cam for the stock tune, something around a 260 grind is going to work best. WOT-Tech has the ability to spec a cam for any application, including bone stock, and John has done some flat tappet cams in the past. He goes by ForcedFirebird on here. If you want a shelf cam, I can get the comp 252 grind is probably the closest available. That is going to be the best possible cam for the stock tune however.Ben
60DegreeV6.com
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Don't waste time on the 252, I'd at least do a 260 for a shelf cam, but a custom cam is going to be better. If you don't mind doing some extra machine work, there's more lift to be had than .440" as well (260 cam is 260/260 .440/.440)Comment
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thanks FF was looking at an ISKY 262 cam that seemed like it would work but wasn't sure if the computer would freak out with it. I dont want to get into any machine work and etc. just wanted a little more over stock. will probably mill the heads when I get the valves done for a little more squeeze and I might do a bowl cleanup port job too. I just cant bring myself to ever put a totaly stock engine in anything.Comment
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I'm not 100% on this but can't you use the 94-95 3100 rockers which are the 1.6 ratio in that motor to gain lift ?
Someone here will confirm...11.92 @ 122 MPH 3400 91 Cavalier Z24 Intercooled S/C. -totalled-
10.56 @ 130 MPH 3900 LZ9 87 IROC Z28 Intercooled GT4088 TurboComment
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Buy the COMP 252 or 260 K kit and some Magnum 1.6:1 roller tip rockers and call it a day. I could not be more satisfied with a single product I put on my Trooper!1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
Because... I am, CANADIANComment
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Your ECM will run fine with a 262, but it will be better if you put a new chip in it to take advantage of the better breathing.
It has been done. You have to shave off the bottom of the pedestal, Joseph Upson did it a few years back. Really unnecessary since there's 1.6 rockers available as a direct fit.Originally posted by Mars View Post
Yup. The Comp 260 is what I would go with. We can get them even though they aren't listed on the WOT-Tech store, for a competitive price.Originally posted by betterthanyou View PostComment
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94-95 3100 don't have a pedestal, so they drop right on.Ben
60DegreeV6.com
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