TomP

Hi guys! I'm looking for a cam for my MPFI '86 2.8L V6, unfortunately, none are CARB-certified. I have a feeling that the companies making the computer-compatible camshafts didn't bother spending the cash to try for certification- why bother with a V6?

Anyway, to the TPI part: I asked on the tech board if there was a way to tell if a cam will be emissions legal. Stingerssx suggested I check out how the "computer-compatible emissions legal" and "stock" TPI cams varied. He thinks I can get an idea of how much the specs can change... know what I mean?

I searched this board for stock cam specs, but everybody has a cam in their sig, and it brought up a bunch of messages. I also couldn't find it in the FAQ. So, does anyone know the stock cam specs?

My car uses a MAF, so I guess I'd need the 87-89 v8's, 305 and 350, TPI. Also if any of you guys have done emissons-legal cam swaps I'd like to hear of it! I go thru emissions in NJ which adopted the new "dyno" emissions tests. Thanks!


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

Beefy89

87 L98 and 305 manual trans 202/207 @ .05 duration .404/.415 lift 114.5 lsa.87 305 automatic trans 179/194 @.05 duration .350/.384 lift with a 109 lsa.88-89 350 and 305,207/213@.05 duration .415/.430 lift with a 117 lsa.Thats the info that I have.Hope it helps.

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We need Perry Mason

Kevin91Z

iTrader: (1)

You can find this info in the cam tech article on this site.

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TomP

Thanks for the specs, Beefy89! I'll have to study this stuff to make some sense of it

Is that middle cam, for an '87 305 auto, with 179/194 duration @0.050 and 0.350/0.384 the "peanut" cam I've heard about? The lift seems pretty small... heck, it's less than my v6 2.8's stock cam! (My stock = 196/202 duration @ 0.050, 108 lobe sep, and 0.393/0.410 valve lift)

Kevin, I saw that page, but they never said "TPI" for the cams at the end. I take it that the last cam on that page is for a speed-density 305/350?

If you guys are bored, feel free to check out my cam specs that I found for my motor- they're on the tech board, here's the message: https://www.thirdgen.org/messgboard/...ML/004443.html

Thanks!!


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

Kevin91Z

iTrader: (1)

Yes, that is the specs for the peanut cam, and the 90-92 cam is the speed density TPI cam.