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Old 05-04-2013, 07:35 AM
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Experience Needed

Good Day Rodders,
I have a 1970 Chevy Nova with a stock inline six (250) 3spd auto
since its a numbers matching car, I am planning on keeping the six
in it. After reading a few threads I am leaning towards doing the following....
CLIFFORD INTAKE MANIFOLD-
STOVEBOLT EXHAUST MANIFOLD
EDELBROCK 1404 (500cfm) carb
I have already changed over to HEI distributor

Now comes the questions.

With this set up, what brand and size cam would you choose, and why?

Can I do all of the above without boring the block and changing the stock pistons (engine has good compression and doesnt smoke)
would like to do this without sending it out for block work.

Thoughts on a choice of harmonic balancer (existing one wobbles)

Thanks for any info you have. Want to do this right the first time out.

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Old 05-04-2013, 08:14 AM
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How many miles are on the current engine?Would you consider installing a complete replacement engine so that nothing happens to the original?
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Old 05-04-2013, 09:05 AM
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If the motor is running good just leave the internals alone and add the clifford, headers etc.
It's likely the bottom pulley that wobbles and not the balancer.
THe Langdon's headers are the best way to go. I ran a set with an Offy intake and holley 350 2 bbl on my 230 six in my old 65 c10.
Here's a link to some awesome sixes. Lots of good info.
Tricked-out Chevy six cylinder engines - The 1947 - Present Chevrolet & GMC Truck Message Board Network
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Old 05-04-2013, 09:13 AM
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Quote:
Originally Posted by vinniekq2 View Post
How many miles are on the current engine?Would you consider installing a complete replacement engine so that nothing happens to the original?
I bet you're thinking L88, m22 and 4.56 12 bolt Vinnie!!
Been there! Done that!
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Old 05-04-2013, 09:16 AM
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lol,,,

Quote:
Originally Posted by RWENUTS View Post
I bet you're thinking L88, m22 and 4.56 12 bolt Vinnie!!
Been there! Done that!
I had a 250 powered 1967 chevy II. 4 bbl,intake,headers,dual points.
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Old 05-05-2013, 06:52 AM
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Thanks for the replys

Vinnie,
Staying with the 6cyl. I have a 327 out of a 68 Camero but dont want to swap them out.

Nuts,
Thanks for the link. What made you say the pulley rather than the balancer, is there history with those pulleys??
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Old 05-05-2013, 08:05 AM
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THose pulleys being almost flat had not much strength and bent easily. Usually if you think the balancer is wobbling it's ready to fall off. Not sure but I think the balancer is pressed on with a keyway and has no bolt to hold it on.
Do you have power steering too?
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