327 BLOCK CASTING QUESTION
Thread Starter
Safety Car
Joined: Nov 2000
Posts: 4,761
Likes: 138
From: Clinton Township MI
Cruise-In III Veteran
327 BLOCK CASTING QUESTION
In researching the correct block casting # for a replacement block, this site
htt;://www.stingray.nu/tips/tech65.htm Corvette Tech Specs Per Year
shows the following for '65 Vettes:
3782870 327 CID
&
3858180 327 CID - Limited Use
My question is: Was the "180" used in '65 Vettes. If so, why did they switch to the '180" which was in my '5?
Would it be a good core to use as a replacement block in my '5? It's a small journal just like the '870'.
Appreciate feedback on this as I have chance to buy a '180 that just happens to fall, date code wise, before my '5 was assembled.
Thanks in advance guys!
Regards,
Jim
htt;://www.stingray.nu/tips/tech65.htm Corvette Tech Specs Per Year
shows the following for '65 Vettes:
3782870 327 CID
&
3858180 327 CID - Limited Use
My question is: Was the "180" used in '65 Vettes. If so, why did they switch to the '180" which was in my '5?
Would it be a good core to use as a replacement block in my '5? It's a small journal just like the '870'.
Appreciate feedback on this as I have chance to buy a '180 that just happens to fall, date code wise, before my '5 was assembled.
Thanks in advance guys!
Regards,
Jim
Burning Brakes
Joined: Dec 2002
Posts: 912
Likes: 1
From: San Antonio TX
St. Jude Contributor '03 & '04
Re: 327 BLOCK CASTING QUESTION (6T5RUSH)
"Corvette by the Numbers" says the 180 was used in '65 for the 250, 300, 365, and 375 horse Vettes... "it was used interchangeably with the 870 block." :hurray:
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,918
From: Washington Michigan
Re: 327 BLOCK CASTING QUESTION (gary6696)
The 870 (Saginaw) block was used on almost all 65's; the 8180 was a Tonawanda casting (2-digit year code in the casting date, no oil gallery plug above the timing cover) that was used in a very limited number of cars. VERY rarely seen, but correct nonetheless. :thumbs:
Thread Starter
Safety Car
Joined: Nov 2000
Posts: 4,761
Likes: 138
From: Clinton Township MI
Cruise-In III Veteran
Re: 327 BLOCK CASTING QUESTION (JohnZ)
gary6696 & JohnZ:
Hey, always good to bounce it off more then 1 "official" source. You guys just gave me a "warm and fuzzy" feeling about this. Now, to see if I can win it!
Thanks!
Jim
Hey, always good to bounce it off more then 1 "official" source. You guys just gave me a "warm and fuzzy" feeling about this. Now, to see if I can win it!
Thanks!
Jim
Le Mans Master
Joined: Jul 2003
Posts: 6,808
Likes: 24
From: Westport CT
Re: 327 BLOCK CASTING QUESTION (6T5RUSH)
the Tonanwanda block, if used at all in 65 (some still dispute that) is at least so unlikley that a 65 T block car for sale, repp'd to be original, should be considered incorrect until sufficiently proven otherwise. I would put it into the same category as someone selling you a SB 67 with the BB stinger hood as "one of the ones that was delivered that way" - even if it's the God's honest truth you will spend the rest of your life defending the correctness of the car.
Thread Starter
Safety Car
Joined: Nov 2000
Posts: 4,761
Likes: 138
From: Clinton Township MI
Cruise-In III Veteran
Re: 327 BLOCK CASTING QUESTION (ctjackster)
ctjackster,
Thanks. Well, it's a mute point now as I didn't win it. Still in the hunt.
Thanks again!
Jim (6T5RUSH)
Thanks. Well, it's a mute point now as I didn't win it. Still in the hunt.
Thanks again!
Jim (6T5RUSH)
Le Mans Master
Joined: Jul 2003
Posts: 6,808
Likes: 24
From: Westport CT
Re: 327 BLOCK CASTING QUESTION (6T5RUSH)
Jim - advise the birthday of your 65 SB and you can have more eyes looking for you, we all know of blocks here and there that aren't just right for us but might be good for you.
Thread Starter
Safety Car
Joined: Nov 2000
Posts: 4,761
Likes: 138
From: Clinton Township MI
Cruise-In III Veteran
Re: 327 BLOCK CASTING QUESTION (ctjackster)
ctjackster:
Thanks for the suggestion. You're right. This forum does give you the "right" venue to allow true focus on your needs/help.
My '5 is a mid March, '65 assembled car. The Casting date on my original '870 block is B1'65. I would think the "rule of thumb" is no more than 6 months prior to the build date of the car, right? So, a date code from October, '64 through early March '65 would work.
Thanks again.
Jim
Thanks for the suggestion. You're right. This forum does give you the "right" venue to allow true focus on your needs/help.
My '5 is a mid March, '65 assembled car. The Casting date on my original '870 block is B1'65. I would think the "rule of thumb" is no more than 6 months prior to the build date of the car, right? So, a date code from October, '64 through early March '65 would work.
Thanks again.
Jim
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Intermediate
Joined: Mar 2004
Posts: 28
Likes: 2
From: Columbus OH
Re: 327 BLOCK CASTING QUESTION (6T5RUSH)
Jim,
I run Ebay auctions for a guy that's got an 870 block dated C-8-65 that is rough bored .025. Its been hot tanked/magnafluxed and is guaranteed good usable. This is pretty close to your car's build date. I'll need to check out the pad for additional info but thought you might be interested. Also, I see you're from Clinton Twp. The block is up in Bay City so you may even be able to pick it up and avoid shipping. I'll double-check, but I think the owner wants $600 for it.
I run Ebay auctions for a guy that's got an 870 block dated C-8-65 that is rough bored .025. Its been hot tanked/magnafluxed and is guaranteed good usable. This is pretty close to your car's build date. I'll need to check out the pad for additional info but thought you might be interested. Also, I see you're from Clinton Twp. The block is up in Bay City so you may even be able to pick it up and avoid shipping. I'll double-check, but I think the owner wants $600 for it.
Le Mans Master
Joined: Jul 2003
Posts: 6,808
Likes: 24
From: Westport CT
Re: 327 BLOCK CASTING QUESTION (2000Hoo)
sweet little block (casting # - wise and date-wise) that just got noticed.
ya know, I have this SB April 6, 1965 birthday car too . . . . :D
kidding!
ya know, I have this SB April 6, 1965 birthday car too . . . . :D
kidding!
Thread Starter
Safety Car
Joined: Nov 2000
Posts: 4,761
Likes: 138
From: Clinton Township MI
Cruise-In III Veteran
Re: 327 BLOCK CASTING QUESTION (2000Hoo)
2000Hoo:
Hey, I'd appreciate your checking it out further.
Thanks for this possibility. Mine has been bored out .030 so, if I can avoid replacing pistons, etc... a block not bored over .030 would work for me.
Regards,
Jim
Hey, I'd appreciate your checking it out further.
Thanks for this possibility. Mine has been bored out .030 so, if I can avoid replacing pistons, etc... a block not bored over .030 would work for me.
Regards,
Jim
