Author Topic: Ideal engine date  (Read 281 times)

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Offline SeaninSD

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Ideal engine date
« on: November 05, 2018, 06:34:53 pm »
Currently collecting parts for a 428 SCJ car with a build date of April 10 1969. I know the acceptable date range for engine components is 3 mo prior to build date. But, with many 428 parts being produced during this time period, would a block/heads/intake dated March '69 be considered more realistic?

Are there certain things I should look for if considering purchase of a machined block (30 over)? Or should I wait it out to find a std bore block (if possible)?

Thanks, Sean M
1970 Mach 1 428 SCJ Grabber Green project
1970 Boss 302 Bright Gold Metallic
1968 Jeep Jeepster Convertible
1982 Chevy C10 Stepside 4x4
1984 Dodge Ramcharger Royal SE

Wanted:
1968-1970 428 CJ Cougar 4 speed
1970 Boss 302 Eliminator

Offline sportyworty

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Re: Ideal engine date
« Reply #1 on: November 06, 2018, 11:08:20 am »
9B is common and works nice for your car as a date match replacement assembly. 
When I was selling a lot blocks the word was "would build at" in other words what size pistons can my buyer expect to go in there at time of exchanging funds. Very important because someone's .030 may required a .040 in reality after going to your machine shop. My machinist would rough under bore so I could confidently quote piston size requirement. Also be sure any blocks or heads are magged before paying a dime for unknown castings from unknown seller. Every block is different with regards to core shift. Likely an assembly that builds at .030 is going to be a good piece and any larger maybe look more due to easy date Sean
8F91R577646 Black/Red 4 Speed

Offline SeaninSD

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Re: Ideal engine date
« Reply #2 on: November 06, 2018, 04:21:12 pm »
Thanks for the reply Kerry. I think I may hold off and continue searching for a std bore block as I'm not in a rush and I don't want to buy a 30 over block then discover it needs to be bored again
1970 Mach 1 428 SCJ Grabber Green project
1970 Boss 302 Bright Gold Metallic
1968 Jeep Jeepster Convertible
1982 Chevy C10 Stepside 4x4
1984 Dodge Ramcharger Royal SE

Wanted:
1968-1970 428 CJ Cougar 4 speed
1970 Boss 302 Eliminator

Offline Ntheogen

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Re: Ideal engine date
« Reply #3 on: November 08, 2018, 01:29:32 am »
Kerry, Sean is speaking of a block, I believe, he would be purchasing from me, definitely not an "unknown" seller in the FE world. This block was marketed to him with a sonic test sheet and is freshly magged from a reputable machine shop. Hope you're doing well Sporty. I recently found another super early obscure C scratch block I know you will like to hear about. I'll send you some pictures soon.

Sean, Kerry is a wealth of knowledge and a solid guy to listen to, he will definitely steer you in a wise direction and with hard won experience.

Jack

Offline sportyworty

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Re: Ideal engine date
« Reply #4 on: November 08, 2018, 09:56:25 am »
Thank you Jack.  You are a straight shooter no extra fluff, just like your Dad. If the date and price work and the block builds at .030 per your paper, it sounds like a good prospect for Sean.
Yes I am always interested in anything early 428 or unique to ponder :) send er over !
8F91R577646 Black/Red 4 Speed