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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 retainers-cca-742-16 springs-cca-981-16 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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andrewakessler (01-22-2013) | ||
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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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