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-   -   Dart blocks (http://s91730302.onlinehome.us/forums/showthread.php?t=1593)

Sean #40 10-16-2008 05:56 PM

Dart blocks
 
Are we alowed to use Dart blocks?

jimwheeler 10-16-2008 06:17 PM

Nope. OEM blocks only. And, I don't see that changing. Changes are pretty much over for ASedan for the foreseeable future. Although there were a few small changes discussed at the tent meeting.

Sean #40 10-16-2008 08:28 PM

Thanks for the info i just found one that was a great deal never mind, So anything Chevy will work?

jimwheeler 10-16-2008 09:45 PM

Any iron block. Remember that the only rules are 4.040 bore, maximum. 3.50 stroke, maximum. Valve lift .500", maximum. 10.30 compression ration, maximum. Over 313 cubic inches, more weight. 100# more weight for the Edelbrock heads, whichever sized engine you use. Read the new rules. This is for reference only and is not official.
wheel

Sean #40 10-16-2008 11:52 PM

Quote:

Originally Posted by jimwheeler
Any iron block. Remember that the only rules are 4.040 bore, maximum. 3.50 stroke, maximum. Valve lift .500", maximum. 10.30 compression ration, maximum. Over 313 cubic inches, more weight. 100# more weight for the Edelbrock heads, whichever sized engine you use. Read the new rules. This is for reference only and is not official.
wheel

Thanks again i have all the rules the only thing i am not familiar with is the chevy small block #s as written in the rules a buddy has lent me a book of blocks so i am reading it now the rest seems pretty clear.
Appreciate the help.

jimwheeler 10-17-2008 07:20 AM

The list of block numbers is no more. Any OEM iron block. The only part numbers now specified are for stock cranks. This is because you can use a stock crank, even if it is under the designated minimum weight, but you can't use an aftermarket crank that is lighter than 42 lbs.

jkopp 10-17-2008 09:05 AM

Sean, if you need a copy of the GM Perf book with the blocks in it let me know.

-Kopp

KW78 10-17-2008 01:09 PM

Quote:

Originally Posted by jimwheeler
The list of block numbers is no more. Any OEM iron block. The only part numbers now specified are for stock cranks. ...

Well, and the part numbers of the heads on your particular spec line that you must use on your block! So those of you contemplating the AI trick of running the more powerful chevy crate motor in a mustang are out of luck, because your ford has to have a ford head...

Details, details....

:cheers:
Kyle

jimwheeler 10-17-2008 01:15 PM

True. The designated heads, or the Edelbrock heads.

Ted Johnson 10-17-2008 03:31 PM

And
 
With the 4th gen T2 f-bodies, will their blocks and cranks and heads be part number specific since they are supposed to be in t2 trim? Will this be listed in the gcr? And obviously ls-1 or 2 based engines are not allowed in mustangs and the third gen GM cars as well.


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