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James L Miller · 06-10-2017, 11:10 AM

Now that it's settled, "back to the studio" as Jeremy Clarkson might say.

To summarize, if you can get an aftermarket/HP block for your combo, buy one.

If they don't make one for your combo, either run what you can get or buy a foundry and cast your own and then get it approved by NHRA.

I submitted a 318 piston from Silvolite a couple of years ago to NHRA and never heard anything one way or the other. Good luck getting something approved.

06-10-2017, 11:10 AM	#44
James L Miller Member Join Date: Apr 2005 Posts: 494 Likes: 6 Liked 25 Times in 16 Posts	Re: Hardblock? Now that it's settled, "back to the studio" as Jeremy Clarkson might say. To summarize, if you can get an aftermarket/HP block for your combo, buy one. If they don't make one for your combo, either run what you can get or buy a foundry and cast your own and then get it approved by NHRA. I submitted a 318 piston from Silvolite a couple of years ago to NHRA and never heard anything one way or the other. Good luck getting something approved. __________________ Mopar 2 Ya!