Just bought all the stuff to put the 383ht in my 65 nova. It has the vortec heads on it. I was thinking of running a 26-2800 stall and not sure on the gears yet. What would give the 383 around 425-450 range. The block is all set up for a roller cam.
Typically on the Vortec heads you're limited on the max lift to under .480" lift (sometimes quite a bit LESS) because of the springs and retainer-to-seal clearance. A lot of the aftermarket "Vortec" style heads start off with .100" longer valves to allow for more installed height and retainer clearance.
Before you really start looking to get a cam I'd recommend getting the head work done so you have more options available to you.:yes: You'll be a lot happier in the long run.
Think of it this way. Hydraulic roller now or head work AND a solid flat tappet now. The price is closer than you think.
I was thinking maybe the lt4 springs would work and maybe find a hot cam. Not sure but the block is a vortec block so I need to keep with the roller cam. Decisions
If you are going through the effort of changing springs, spring for the better ones. I have ZZ4/LT4 springs and I'm getting ready to change them to 26918s. Below are a couple of articles.
For starters I'd go with the upgraded beehive springs and use the GM hot cam and 1.6 rockers. I think it would be a nice 430hp street bruiser.
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