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aspen7709 · 04-27-2010, 04:37 PM

The 360 block can be replaced with the new R blocks and quite a few racers are using 318/340 main blocks with a 360 crank. That is legal per NHRA as long as the stroke and cubes are there. With the small journal crank the spinning assembly is a lot lighter.

04-27-2010, 04:37 PM	#10
aspen7709 Member Join Date: Aug 2004 Location: sunny,az Posts: 165 Likes: 0 Liked 0 Times in 0 Posts	Re: 73 Plymouth duster question The 360 block can be replaced with the new R blocks and quite a few racers are using 318/340 main blocks with a 360 crank. That is legal per NHRA as long as the stroke and cubes are there. With the small journal crank the spinning assembly is a lot lighter.