Thread: Restoring Rusty
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Old 05-08-2018, 10:01 AM   #5418
Gregski
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Location: Sacramento, CA
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Re: Restoring Rusty

Quote:
Originally Posted by MikeB View Post
After running the stock heads for a year or so, I switched to GM LS6/LS2 beehive valve springs. Installed them at 1.750" using CompCams 787-16 retainers and 648-16 locks. It's a super clean setup.

Cam is a GMPP roller used in the HT383 and RamJet 350 crate engines. It's a small cam by "bigger is better" hot rodder standards, but GM's HP/TQ chart for the RamJet shows it has a very wide powerband that's perfect for an around town cruiser and running to the dump. But the engine is definitely not a dog when I stomp on the gas. In fact, if/when I go to a lower gear than its current 2.73, the truck should be downright quick.
sounds like you did something similar to me and followed a GMPP engine spec build, did you go with the 1.6 rockers like the RamJet?

so your cam is a roller and has a .460" / .481" lift, mine is a flat tappet from their 350 HO engine so it's a .435" / .460" with stock springs I recon it's the biggest you can go on a Vortec with a flat tappet cam unless you swap springs

your duration is tight 196* / 205*, mine is 212* / 222*

Last edited by Gregski; 05-08-2018 at 10:08 AM.
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