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Paul Precht · 06-08-2017, 10:52 PM

I use Halco Machine Grout in the BB Chryslers and never had any out of round issues. Is the Hardblock the issue or is it because the Chevy blocks are softer and maybe thinner. I'd love to have one of the new aftermarket BB Chrysler blocks avail but at 4K that probably wont happen. I use the 413 industrial blocks for my 63 and they are about .300" before machining but filled a standard 383 block for my Challenger about 3 years ago and haven't machined it yet so I think it's cured by now. How long are the people who had trouble with the Chev's waiting before machining.

06-08-2017, 10:52 PM	#30
Paul Precht Senior Member Join Date: Dec 2001 Location: Elysburg, Pa Posts: 730 Likes: 353 Liked 309 Times in 118 Posts	Re: Hardblock? I use Halco Machine Grout in the BB Chryslers and never had any out of round issues. Is the Hardblock the issue or is it because the Chevy blocks are softer and maybe thinner. I'd love to have one of the new aftermarket BB Chrysler blocks avail but at 4K that probably wont happen. I use the 413 industrial blocks for my 63 and they are about .300" before machining but filled a standard 383 block for my Challenger about 3 years ago and haven't machined it yet so I think it's cured by now. How long are the people who had trouble with the Chev's waiting before machining.