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 Post subject: Roller cam specs
PostPosted: Tue Jun 20, 2006 6:01 pm 
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Addicted to LUV
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Joined: Sun Jan 22, 2006 1:11 am
Posts: 2803
Location: Baytown,Texas
Check these out and let me know what you think. GMPP Part #'s

12370845 Hydraulic Roller Tappet
This hydraulic roller design contains eccentric for mechanical fuel pump. It is for off-road use only. The duration at .050” tappet lift (intake/exhaust) is 214”/224”; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 488”/509”. Valve lash is zero/zero and lobe centerline is 112 degrees. --
12370846 Hydraulic Roller Design
This hydraulic roller design contains eccentric for mechanical fuel pump. It is for off-road use only. The duration at .050” tappet lift (intake/exhaust) is 222/230; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 509/528. Valve lash is zero/zero and lobe centerline is 112 degrees. --
12370847 Hydraulic Roller Design
This hydraulic roller design contains eccentric for mechanical fuel pump. It is for off-road use only. The duration at .050” tappet lift (intake/exhaust) is 234/242; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 539/558. Valve lash is zero/zero and lobe centerline is 112 degrees.


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PostPosted: Sun Jun 25, 2006 12:06 am 
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Japanese Redneck
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Joined: Thu Jul 25, 2002 11:42 am
Posts: 1125
Location: San Diego, California
I'd say based on the specs in your other post:

1. Rear end gear will be 4.10 posi
2. 355 2 bolt
3. 9.7 to 1 2256 trw flattop 64cc chambers
4. 062 vortecs with mods for lift guide plates screw ins.
5. stall will be approx 2600-2800 always hard to be exact. Fresh/built th-350
6. The truck will weigh in at approx 2900?
7. Cam im looking at is 215/220 @.050
8. this will see some around town street use and will be driven to the race track on fridays and sundays.
9. I have all the parts to spray up to 200 hp. probably only put 150 on it.
10. high rise dual plane. This motor is mostly parts I had laying around It will have a 750 demon 1 7/8 hooker block huggers. I just bought a new house and cannot afford to finish the big motor right now, but this motor is within reach and will due for this season. I really need to get a motor in it and running. If it's running and im spending money on it thats ok, if it sits there dead with boxes of new parts stacked on it the wife says im spending money on junk.

JMO, the first cam would be your best bet but you would benefit from a llittle more compression (10.5?) to run that cam as well. Your vortec head should have at least a 170-180cc or bigger intake port to support that cam and make it work more to its potential. have you considered a mechanical roller?

_________________
1978 LUV Truck 2WD
450 "Small Block" Chevy
3.70 Ford 9
28x10 Goodyears


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