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|-+  Orphans - documentation or VIN-stamped drivetrains - in search of the original cars
| |-+  1968 - Orphans
| | |-+  MO302 partial vin of 18L335817
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Author Topic: MO302 partial vin of 18L335817  (Read 1464 times)
67rsCOS
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« on: February 23, 2014, 10:53:15 PM »

I pulled this engine out my 67 RS Camaro and have found out that it is a '68 MO302. I wanted to see if the original car was still out there and would love to have the car and engine reunited. The engine ran before I pulled it out and there were not any odd noises. I have not pulled it any farther apart than what you see, but was told that the engine was all original and had only been transplanted into the car. I know the carb and distributor are not original though. The owner of the rest of the car could have it for what I payed for it.










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1968RSZ28
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« Reply #1 on: February 24, 2014, 10:14:30 AM »

For future searches from a POP...

124378L335817  V0323MO

Paul
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68Zproject
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« Reply #2 on: February 24, 2014, 10:51:11 AM »

What's the date on the alternator?
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68Z28
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« Reply #3 on: February 24, 2014, 11:46:46 AM »

What is the cast date on the block and is the heads date K16 ? or  8 ?
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" He who knows naught, knows not that he knows naught"  It's not you...  It's just the way my brain is wired.
1968RSZ28
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« Reply #4 on: February 24, 2014, 01:43:17 PM »

What is the heads date K16 ? or  8 ?

It has to be K 1 6 with a casting number of 3890462.  Heads aren't original '68 302 heads.

Paul
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VINCE Z28
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« Reply #5 on: February 24, 2014, 03:06:31 PM »

Yeah that's what I was thinking along with the after market fan and valve covers. Thanks Paul
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" He who knows naught, knows not that he knows naught"  It's not you...  It's just the way my brain is wired.
67rsCOS
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« Reply #6 on: February 24, 2014, 05:23:01 PM »



It has to be K 1 6 with a casting number of 3890462.  Heads aren't original '68 302 heads.

Paul
[/quote]

Do you know what the heads are then?
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Bigjon427
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« Reply #7 on: February 24, 2014, 05:50:54 PM »

It has to be K 1 6 with a casting number of 3890462.  Heads aren't original '68 302 heads.

Paul
[/quote]

Do you know what the heads are then?

That's a good question. 68 302 should be 291 heads. What did they use on the 67 302. 461 462?
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1968RSZ28
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« Reply #8 on: February 24, 2014, 06:35:09 PM »

It has to be K 1 6 with a casting number of 3890462.  Heads aren't original '68 302 heads.

Paul

Do you know what the heads are then?

Yes, the casting date of K 1 6 "translates" to November 1, 1966; so the heads are off a 1967 model year vehicle.  The 3890462 heads were used on Camaros, Chevelles, Corvettes, Novas, and full-size Chevys in 1967.  Do you know if the heads are 2.02s or 1.94s?

Paul
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1968RSZ28
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« Reply #9 on: February 24, 2014, 06:56:04 PM »

That's a good question. 68 302 should be 291 heads. What did they use on the 67 302. 461 462?

1967 302s could be equipped with either the 3890462 or the 3917291 cylinder heads.  1968 302s used only the 3917291 cylinder head.  The difference between '67 and '68 3917291 cylinder heads is the '68 heads were drilled and tapped for a water temperature sensor while '67 heads were not.  The 3782461 cylinder head was never used on the Camaro.

Paul
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67rsCOS
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« Reply #10 on: February 24, 2014, 08:18:21 PM »

How would I tell the difference between 2.02s and 1.94s?
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1968RSZ28
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« Reply #11 on: February 24, 2014, 09:46:21 PM »

How would I tell the difference between 2.02s and 1.94s?

With the cylinder head removed from the block, measure the diameter of one of the intake valve heads.  If it measures just over 2", it is a 2.02 cylinder head and if measures less than 2", it is a 1.94 cylinder head.

Paul
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bcmiller
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« Reply #12 on: February 25, 2014, 01:59:24 AM »

If a dime won't fit between the intake valve and the exhaust valve, the valves are 2.02 intake and 1.60 exhaust. It's and old timers trick.   Wink
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1968 Camaro SS - now 468 BBC, M21, 12 bolt.
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67rsCOS
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« Reply #13 on: March 15, 2014, 06:50:16 PM »

Sorry I took so long getting back to y'all. I've been pretty busy lately. The heads are 2.02s.
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1968RSZ28
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« Reply #14 on: March 15, 2014, 07:06:50 PM »

Sorry I took so long getting back to y'all. I've been pretty busy lately. The heads are 2.02s.

Factory 1967 3890462 2.02 heads originally came on...

1967 327cid/325hp Chevelles
1967 302cid/290hp Camaros (Z/28s)
1967 327cid/350hp Corvettes
1967 327cid/350hp Chevy IIs

Paul 
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67rsCOS
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« Reply #15 on: March 18, 2014, 05:20:04 PM »

Out of curiosity, what would 1.94s have been used on?
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69Z28-RS
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« Reply #16 on: March 18, 2014, 09:59:37 PM »

Out of curiosity, what would 1.94s have been used on?

295/300 hp 350's for one....
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
ko-lek-tor
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« Reply #17 on: March 18, 2014, 10:25:11 PM »

Do those heads have a machined pocket on the intake side or I'll re-phrase, should they? Do 462 and 291 heads (2.02) have machined area around intake valve? My only experience with 2.02s are 186 and 492(over the counter) heads I have had and they are machined. Usually a good way to tell if that is the valve that came in head opposed to being modified.
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Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85
69Z28-RS
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« Reply #18 on: March 18, 2014, 11:29:45 PM »

No.  If you were to take, for example, 186 heads with 1.94" intakes, and have them machined for 2.02 intake valve size, then you would also want to ask them to machine to 'unshroud' the valve.  Hope that answers your question.. Smiley
Note:  I really like the 1.94" valve heads on the street better than 2.02, as you'd have to be running very high rpms to justify the larger valve size.  1.94" run better and are more efficient for 90% of street driving.
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
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