Technical Tips > Pre 84
Nice yellow tho
Adam:
Well, my stock 305 is probably more to the end of its life than beginning. So I want to start thinking of putting another engine in, whilst keeping cost down. I was thinking of ever so slowly restoring another engine in my garage and some day swapping it over into the 1980 vette.
I'm not sure of which capacity to go for though. As a kid, I used to think bigger is better, and small blocks go up to 400ci. But reading some specs showed me that a 327 has a smaller stroke and larger bore than a 350 which would make it a higher reving "sporty" engine as opposed to a "torquey" towing engine.
Is this a fair assesment? What about the 383 and 400 motors, what are they good for? Does a 305 use the same block as a 350?
I'd LOVE to restore a big block and slot it in, but realisticly I want to keep my suspension, gearbox and diff etc. its a standard 350 auto box btw. Nor do I want registration hassles. So 300-350HP would be about it.
Also its pretty much a daily driver so no racing cams and lumpy idles.
Thanks!
Adam
Brutus:
Different blocks unfortunately.....305 can't be bored out to 350.
77CVT:
You can do anything with a 350! A 383 has a 400 crank (I think) which requires some machining so the crank will clear the block. I think the 350 & 400 have the same bore but diff stroke. 383's are bulit for torque, but more torque increases the stress on the motor as well - it all depends on what you want (and how you bulid it).
What performance do you want? A stop light hero or a higher speed racer? If you nail it down to what you want there is still a minefield of different setups to achieve it.
A 350 with higher compression pistons, a decent cam (depends if it's an auto or a manual), aftermarket heads with a bit of valve work and a port matched dual plane intake, free flowing dual exhaust will make close to 300HP RWHP (so long as you rework the distributer curve and the carb is up to it). With an auto trans you'll need a better torque converter.
It is a good idea to build one on the side. I should have done that so I could have gotten rid of the dished pistons they came out with, although they are good for supercharging. Hmmmmmmmmmmmm. :evil
77CVT:
Here are some good sites to get you going!
http://www.newcovenant.com/speedcrafter/ - a good place to start
http://ryanscarpage.50megs.com/combos1.html - some good dynoed combinations
http://www.kb-silvolite.com/page07.htm - good tech info
rebel:
Agree with all that 77cvt says. The 350 motor is an excellent motor and I've heard of it being stroked as far as 427. Personally I wouldn't recommend that large a stroke, but it's been done.
Note that you can buy excellent crate motor's from the chevy catalogue already worked which in the long run can save you some cash. Ofcourse it "may" take the fun out of it if you are mechanical, competent and have the tools and inclination for this kind of project. Alternatively, if you are doing it yourself and need engine parts, contact American Auto parts in Homebush and my mate ....
Scott Cooper
Quantum Racing Industries
Unit 14 Pacific Chambers
3460 Pacific Highway
Springwood, QLD. 4127
Australia.
Tel: +61 (7) 3290-5911
Tell 'im the rebel sent ya .... ;-)
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