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-   -   Where to buy short block (http://chevelleforum.net/showthread.php?t=817)

grumpy 05-25-2010 04:49 PM

Where to buy short block
 
News was not good on our block..

Need to purchase a 355 short block. I found this one at Jegs, http://www.jegs.com/i/Blueprint+Engi...P3554/10002/-1 summit has the same brand. I never heard of these guys. Any suggestions would be much appreciated. Thanks

Dave

Ms Grumpy 05-25-2010 06:27 PM

Come on guys I really need your help on this one. You have been great on helping with alot of our other questions.

flash 05-25-2010 07:06 PM

You can get some pretty good deals thru GM on crate motors .

Mike 1972SS 05-25-2010 07:30 PM

With the pistons that are installed, I would pass. Even if you had 76cc heads, the compression ratio would be almost 10.4:1, which is pushing it on premium pump gas/aluminum heads.

What is the combustion chamber size on your heads? Are they cast iron or aluminum? What cam are you going to run? More info needed.

Mike

Ms Grumpy 05-25-2010 07:34 PM

They are Dart Pro1 72cc aluminum heads. Going with the 294 hr comp cam.

grumpy 05-25-2010 07:46 PM

We would like to use as much of this as possible


Dart 11221111P 72 cc heads with 180 runners
1.45 springs
Comp cams hyd roller 294/300 .242/.248 .540/ .562 110 deg lobe.
Comp roller ultra pro magnum roller rockers 1.52
Pro magnum push rods
Dart sportsman II dual plane intake
Holley 770 street avenger
Hooker comp headers 2451 full length

Mike 1972SS 05-25-2010 07:47 PM

Those heads are great and I'm glad you're going with a roller cam, especially with today's low zinc oil. The problem with already having the heads and cam is that just buying an off the shelf shortblock, you may end up with mismatched parts and a poor engine combination.

I would contact a local engine builder and have them build an engine with the right combination of parts that meets your goal with the engine. I have had good luck with Kinectic Racing in Westland.

http://www.kineticracingengines.com/default.htm

Mike

Highway Star 05-25-2010 08:39 PM

If having a shortblock built is going to cost big bucks to match your heads, you have other options.

72cc is not a common chamber volume. You could likely have them milled to use a shortblock with flat-tops (maybe cheaper pistons) , and wind up around 9.5 or 9.7 to 1.

There is a chance your cam may not be re-useable here right?

Do you guys know if you need a new bottom end yet?

Do you know what happened yet?

Highway Star 05-25-2010 08:46 PM

We have Brandon from ATK engines in the greater DFW here, as I believe "Notalent" . . . maybe he could tighten you guys up with something.

Just throwing out ideas, nobody mentioned that one yet.

grumpy 05-25-2010 09:11 PM

Quote:

Originally Posted by Highway Star (Post 10169)
If having a shortblock built is going to cost big bucks to match your heads, you have other options.

72cc is not a common chamber volume. You could likely have them milled to use a shortblock with flat-tops (maybe cheaper pistons) , and wind up around 9.5 or 9.7 to 1.

There is a chance your cam may not be re-useable here right?

Do you guys know if you need a new bottom end yet?

Do you know what happened yet?


The lifter bores are worn out and cylinders not much better. Its going to be scraped.

The cam, rockers, springs, manifold and heads have 2 miles on them and will be reused.

I wanted to stroke it but then the cam cannot be reused.

Don't know all that much about motors but I think a 355 short block with .270 dome pistons should work nice.

Dave


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