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Casting Number Question...
Thread Starter
Instructor
Joined: Aug 2003
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From: east providence ri
Casting Number Question...
I located one of the casting numbers on my 80's engine block. Aside from dropping the oil pan, is there another way to tell whether or not I have 2 or 4 bolt main?
I've read through the documentation on mortec.com and while there was a TON of info, I couldn't find what I was looking for.
Is there any other way? The block casting is 14010207 and the head casting numbers are 462624.
I ask for the wisdom of the corvettefourm gurus.
Thanks,
Chris
I've read through the documentation on mortec.com and while there was a TON of info, I couldn't find what I was looking for.
Is there any other way? The block casting is 14010207 and the head casting numbers are 462624.
I ask for the wisdom of the corvettefourm gurus.
Thanks,
Chris
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
Might start here :
SERIAL NUMBERS Body & Chassis Coupe 1Z87L89S400001 -1Z87L89S453807
The 5th digit varied: 8 = base, 6 = L82 (4 bolt).This will confirm "original engine" for your Vette.
I'll see what I can dig up on your casting numbers.
SERIAL NUMBERS Body & Chassis Coupe 1Z87L89S400001 -1Z87L89S453807
The 5th digit varied: 8 = base, 6 = L82 (4 bolt).This will confirm "original engine" for your Vette.
I'll see what I can dig up on your casting numbers.
Race Director
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Originally Posted by migraine99
I forgot to mention that I have an L48. But, I remember hearing that if GM was out of 2 bolts, they threw in a 4 bolt.
Does that make sense?
Does that make sense?
14010207...350...80-85...2 or 4
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
Originally Posted by migraine99
I located one of the casting numbers on my 80's engine block. Aside from dropping the oil pan, is there another way to tell whether or not I have 2 or 4 bolt main?
I've read through the documentation on mortec.com and while there was a TON of info, I couldn't find what I was looking for.
Is there any other way? The block casting is 14010207 and the head casting numbers are 462624.
I ask for the wisdom of the corvettefourm gurus.
Thanks,
Chris
I've read through the documentation on mortec.com and while there was a TON of info, I couldn't find what I was looking for.
Is there any other way? The block casting is 14010207 and the head casting numbers are 462624.
I ask for the wisdom of the corvettefourm gurus.
Thanks,
Chris
& 2.02/1.60
Thread Starter
Instructor
Joined: Aug 2003
Posts: 141
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From: east providence ri
Originally Posted by rihwoods
They may have done that.But looks like you may have to drop your pan.By the way,has your engine ever been re-built ?
14010207...350...80-85...2 or 4
14010207...350...80-85...2 or 4
Thanks for the head info...
Are these the 'smog' heads that everybody talks about? If so, what are my aternatives?
Head casting: 462624 76-87 1.94/1.50
& 2.02/1.60
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From: glace bay nova scotia
g.m. kept no precise records of wich car got what blocks.your engine can be a 2 or 4 bolt main. unless you are over 400 h.p. it doesn't matter.a 2 bolt block with splayed cap 4 bolt are said to be even better than the factory 4 bolt.
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From: Little Rock AR
99 times out of 100, an L-48 will have 2 bolt mains. 
Check this out for me and report back please...There is a boss on the rear of the block right at the top of the bellhousing flange. Check it to see if it has been tapped for threads. I am betting yours is not threadded and that would indicate 2 bolt main. If it was tapped, I would say you would have a 4 bolt main. Do not tell anyone about this little bit of trivia and it will be our little secret here on the C3 CF board. Pinky-promise you guys! 
-Mark.
Check this out for me and report back please...There is a boss on the rear of the block right at the top of the bellhousing flange. Check it to see if it has been tapped for threads. I am betting yours is not threadded and that would indicate 2 bolt main. If it was tapped, I would say you would have a 4 bolt main. Do not tell anyone about this little bit of trivia and it will be our little secret here on the C3 CF board.
Pinky-promise you guys! -Mark.
Thread Starter
Instructor
Joined: Aug 2003
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From: east providence ri
Originally Posted by stingr69
99 times out of 100, an L-48 will have 2 bolt mains.
Check this out for me and report back please...There is a boss on the rear of the block right at the top of the bellhousing flange. Check it to see if it has been tapped for threads. I am betting yours is not threadded and that would indicate 2 bolt main. If it was tapped, I would say you would have a 4 bolt main. Do not tell anyone about this little bit of trivia and it will be our little secret here on the C3 CF board. Pinky-promise you guys!
-Mark.
Check this out for me and report back please...There is a boss on the rear of the block right at the top of the bellhousing flange. Check it to see if it has been tapped for threads. I am betting yours is not threadded and that would indicate 2 bolt main. If it was tapped, I would say you would have a 4 bolt main. Do not tell anyone about this little bit of trivia and it will be our little secret here on the C3 CF board.
Pinky-promise you guys! -Mark.
