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Old 12-16-2012, 02:19 PM
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I have a 90's 350 with vortic heads...
I used the summit
thumper cam kit-cca-k12-600-4
spring shims-cca-4753
valve seals-fel-proq5572861
push rods-cca-7812-16
cam lock plate-cca-4605
I had to send back the kits behive springs and retainers because of clearence issues.....I found that
worked well

heard it run on the engine stand, sounds great......didn't have the dough for the carb,water pump,exhaust manifolds,etc. so the engine stand owner lent me his........

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Old 12-16-2012, 11:53 PM
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.. I would call that the Comp Thumpr cam as sold by Summit... one you have is biggest I would go with Vortec heads... what stall speed are you running? or is it stick shift? In some cases, the Comp recommended "2000 stall" converter may be a bit low for an automatic with that 227/241 cam depending on rear end ratio and your expectations. I'd highly recommend headers and true dual 2 1/2"-3" exhaust/mufflers to keep full power when installed in the car...

Last edited by BuzzLOL; 12-17-2012 at 12:04 AM.
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