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If it were me and I've thought about this for a while,I would go with a 400 block and increase stroke to go 470".It's a great all around engine,the oil rings are not in the pin area,you can find a rod easily that is .990x2.200,and all of your 383 stuff will still work. I think I would piece this engine together using a 440 source crank Diamond pistons and good quality rods (K-1 or better).Engine would be a screamer and last a long time.It's what I'm going to do for a new build.

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Been beatng the hell out of my 400-470 combo for over 13 years w/a stock 413 off-set ground (3.900 stroke)crank, chevy 6.385 rods and it`s a beast and LOVES to rev and this is my street car that I race a few times a year these days..............Drove it several miles to College to show the younger generation what a real car looks and runs like and they loved it and of course I love driving it WAY more than racing.........good luck!

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Hey your the Super Series guy! Lol. Won it in 09? Dave, I built a 500ci >400 using all 440 source parts. Parts were great. Company was easy to deal with. Very happy with the build. I put the engine in my 67 Belvedere on Caltracs, 30x9 radials and I wasn't impressed. Way to much low end. The car was a monster if it hooked. But the 2nd you had to run behind street or at a marginal track it would blow a tenth off in 60ft. Tube chassis or 4 link it's the perfect engine. I'd try a 451 or 470 if you want stroke. Flat tappet cam and a good set of heads. Top end and mph win races not cubic inch. I found out the hard way. But I still have the engine and it should make the 68 4 link Cuda I'm building an easy 9sec ride

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http://www.amazon.com/exec/obidos/ASIN/1934709034/mopartscom

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This is not a street driver, this is for my
race car, I am just looking into another avenue
in case the block I have at the shop is not going to
cut it.

I am not looking to rotate the world or anything
like that, just want something that will be consistent,
and require very little maintenance, as in trouble
free, something to race every weekend, not something
I am going to have to live with in the shop all the time.

I have the book, and have read it through several times,
but am still undecided, but I am leaning toward the 470"
combo, I have gone as quick as 6.80's with the 383 engine
in the car, with a flat tappet cam, steel heads, nothing
really special, but this was with machine work by a guy
who really knew what he was doing, but he passed away a couple
of years ago, and since then I have had to go else where
for machine work, and not everyone knows the real tricks
of engine machining, I learnt a long time ago that there
is a big difference between someone who knows what needs to be done to
make an engine fast, and someone who knows just how to do
machine work, the same combination is in the car as when he was
doing my machine work, but it's not the same work, the car has been
consistently slow, by about 2 tenths, and I can't get it to run
any faster, so I am leaning toward building something with
a little more horsepower, so maybe it will pick it back up
et wise, that's what I am really after,

So thanks for the replies, gonna have to decide what I am gonna do
pretty soon, but that depends on what my wallet will stand, I race on a budget, always have and always will, for 40+ years, and the car has to pay for itself, I guess I am lucky in that respect, as I have
always been able to keep my ego in check, and not let it get the best of me, and have always and I mean always have been able to show a little profit at seasons end, since I have been racing, not braging
about it or nothing like that, I just watch my bottom line real close.

Thanks
Dave

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