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Old 12-09-2004, 07:14 AM
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Max RPM's

I was wondering what the difference in the max rps of a built 383 and a 383 with dual over head cams would be. Basicly I'm trying to find out if I would be better/cheaper to get a normal 350 compared to one with dual over head cams and build it into a 383. Also if any one has a 350 of any kind they are trying to sell let me know.

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Old 12-09-2004, 07:19 AM
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Dual overhead cams for a 350??????????????

I'd like to see one.
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Old 12-09-2004, 09:09 AM
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Not that I think that is what he originally intended, but it is a dual overhead (per bank) cam 350.
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Old 12-09-2004, 06:27 PM
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Yea there u go aparently corvet has the idea lol. So I'm going to take a hint and stick with the normal 350 and build it up.
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Old 12-09-2004, 07:35 PM
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Man thats a good looking engine......
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Old 12-09-2004, 08:42 PM
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max rpm

There are several things that will govern max rpm, not only just the disintigration of your engine.
Even with a high tech dual over head cam set up, valve spring rates, lift and duration of the cam, CFM of intake and exhaust ,rigidity of the block and strength of the internal parts, rods, pistons, crank, are all big players in the rpm game.

As I love to say:
Cubic $$$$$$$$$$ = Horsepower liniered; how fast do you want to go?

What is this monster motor going to be used in?

I think going with the pushrod block 350 is a wise economical move.
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Old 12-09-2004, 09:20 PM
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I'm basicly looking for an engen that would be considered a hot rod engen. The 305 thats in my 78 cammaro has some pep but I want to be able to go to amature run night at the drag stip and be able to get a decent run. I still need to be able to use this as a daily driver so I don't want to go to extream. Right now I would guess I would run in the 17-20 sence every thing is stock.
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Old 12-10-2004, 11:36 AM
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Get a 350, maybe vortec heads if you're on a budget, an xtreme energy cam and a good stall converter.

Also, check spelling please.
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Old 12-10-2004, 02:21 PM
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when you start talking dual overhead cams you're talking really big money and that corvette motor is a special motor not a normal ls1 or ls2 or ls6.you can get a complete 383 rotating asembly in the ebay motor stores for $700.00.that would't be a down payment on the vette motor.
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Old 12-10-2004, 10:27 PM
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Yea I figured that looked a bit high priced. What comes with the rotating assembly?
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Old 12-11-2004, 04:59 AM
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All the parts that Rotate..................

Crank....
Rods.....
Pistons.....
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Old 12-12-2004, 03:07 AM
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Now if I could just find a cheap used 350 i would be all set.
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Old 12-12-2004, 12:24 PM
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To simply answer ther question. Overhead cams don't see the added lifter, pusrod, rocker, and oil weight so the same spring will run about 5-700 RPM higher before spring harmonics start to hurt power.
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Old 12-12-2004, 03:08 PM
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Quote:
Originally posted by hcker2000
Now if I could just find a cheap used 350 i would be all set.
Around here,
A Core motor is about $100. or Less.......
Running Take-Outs can be found for $500. or so......
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Old 12-12-2004, 10:50 PM
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Whats comes on the core? Just the block? Basicly I'm looking for a motor that would work with just some small parts needing replaced.
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