Quote:
Originally Posted by Geerhead55
Alan,,,assuming there are no stupid questions,,I'm going to fire this one off.
When it comes to Dart blocks for a small block Chevy, I know there is the SHP block
and the "Lil M" block. Are either of these blocks acceptable for Stock by NHRA, or is there another Dart block that is approved that I'm unaware of? I've also heard the SHP block takes a different, longer lifter as compared to the others, correct?
Thanks for your input as always.
Danny Durham
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Danny, the Little M Sportsman block and the 31161111 SHP are the two accepted Dart blocks.
Some Dart blocks do require a taller lifter if you are using roller lifters, as the lifter bosses are taller. The SHP block is listed as having the necessary dimensions and bosses to use OEM roller lifters and camshafts.
I've used and sold both. The biggest thing is knowing how to hone them. You also often have to kiss both the lifter bores and the main bores to suit your needs.