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#1
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billet cams (was: have to ask for help again... sorry)
been looking through the site for a couple hours on old threads and such... i'm wanting to switch to a roller cam, but cant find any info on if there is a direct fit even fire cam.. do i need to switch to a bolt on gear roller to do this? or is there a roller cam with the integral drive gear on it? please give me a part # would like a 212* ish cam for my build. or maybe some pro's and con's for even fire odd fire setups...
thanks again bowtiy
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'87 G/N comp 210/215 hyd roller, JE pistons,balanced,ARP,cometics, ported factory heads/intake, TA-49 12psi, 36# inj, Reds 93 chip, level 10 trans, 9/11 billet converter 2800rpm, cotton 3"dp, 3" exhaust hooker aero mufflers. |
#2
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Re: have to ask for help again... sorry
Whoa. The 84-87 V6 is not an odd fire motor.
Most of the roller cams will require something to be bolted into the front to hold the cam in. Odd fire motors have three shared crank throws. Even fire motors have six individual ones to smooth out engine shake. All the injected production TRs come as even fire. Unless you go to a Stage II setup, build a pre-mid-70s-V6, or get an odd fire crank for a production block (are these available?) you'll never need to worry about the difference.
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Scott Keller - GNTTYPE Founder & Moderator
Last edited by Keller; 01-30-2010 at 02:30 AM. |
#3
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Re: have to ask for help again... sorry
Quote:
http://www.fullthrottlespeed.com/cus...UROLLMOREL+eq+ thanks..
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'87 G/N comp 210/215 hyd roller, JE pistons,balanced,ARP,cometics, ported factory heads/intake, TA-49 12psi, 36# inj, Reds 93 chip, level 10 trans, 9/11 billet converter 2800rpm, cotton 3"dp, 3" exhaust hooker aero mufflers. |
#4
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Re: have to ask for help again... sorry
Note that that cam is austempered. Some prefer billet cams for rollers. Not stating one or the other is better, or that either has problems. Just that it has one distinctive difference from many others.
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Scott Keller - GNTTYPE Founder & Moderator
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#5
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Re: have to ask for help again... sorry
billet would be the best choice, but i havent seen any real info as to where billet or not really comes into play, very fast and reliable cars on cast flat tappets out there. cast roller shouldnt be a problem. and with very little spring pressures and rpm i see it being ok.. would love to hear if its not though, i am looking to do this only one time...and so far its a $400 difference between comperable kits in billet or not billet.. when you figure in the cam gear kit, and bronze cam sensor gear...
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'87 G/N comp 210/215 hyd roller, JE pistons,balanced,ARP,cometics, ported factory heads/intake, TA-49 12psi, 36# inj, Reds 93 chip, level 10 trans, 9/11 billet converter 2800rpm, cotton 3"dp, 3" exhaust hooker aero mufflers. |
#6
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Re: billet cams (was: have to ask for help again... sorry)
I got my billet roller cam kit from Weber Racing
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IL KIM 85 GN w/86 motor, TRW pistons, Weber 206 billet roller cam, EGR welded, o/sized valves, 130psi springs, roller rockers, 3000 conv, adj w/gate, FPR, custom rad, KB ram air, ported, KB headers, Walbro 340M/hotwire, 60lb Hi Z, CPT66bb |
#7
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Re: billet cams (was: have to ask for help again... sorry)
"Cast roller" ... is bad juju ..
In the mid 90s there was a "budget" cast roller that was supposed to be the end all be all and ended up taking out a LOT of motors. Cast rollers HAVE to have the proper hardening/tempering or they WILL fail (as hundreds found out). Be sure that whoever you get a cast cam from can back it up with FACTS about hardness and longevity. Just sayin'
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Ken Mosher 1987 GN original owner 650+ HP Black 2015 BMW 328xi XDrive wagon 2012 Volkswagen Tiguan (the Tig!) Night Blue Met (sold) 2006 Trailblazer SS Red Jewel Tint 395 HP AWD (sold) 2014 Silverado LTZ Crew 4WD 2012 Honda VFR 1200F Tahitian Blue (sold) 2015 BMW S1000R Racing Red 2013 Honda CBR500R Red (wife's bike) 2014 Triumph Bonneville T100 2003 Harley Davidson V Rod Anniversary Edition |
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