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Author Topic: 1968 L89 Camaro barn find?????????????  (Read 2276 times)
Vectra
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« on: September 29, 2013, 07:17:09 PM »

I am contemplating buying a 1968 Camaro basket case built in Norwood.  The block casting number is 3916321.  As you know, this is a 427.  This block has the VIN on the deck that matches the cowl VIN, along with the MT stamping.  The block casting is dated in October (didn't write exact day down) 1967, the car's trim tag indicates the body build date is the second week of March 1968.  It has GM aluminum heads dated 2 days apart, about the same time as the engine block was cast. 

From the research I have done, it doesn't appear that a 1968 L89 came with a 427, only a 396/375.  Is there a possibility that a 427 could have been an option.  My research shows not, but want you all to weigh in on this.

Also, is there a 1968 L89 OR L78 registry with the VINs anywhere for those cars. 

Thank you all for your thoughts.
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cook_dw
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« Reply #1 on: September 29, 2013, 08:07:22 PM »

First welcome.. Grin


Best thing would be to get paperwork on the car.  Get pics of the block stampings, vin, cowl tag, trans stamping and diff stamping.  Only then can anyone give an evaluation on the car.
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Darrell Cook

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1968 Rallye Green SS L78 - unrestored original
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69Z28-RS
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« Reply #2 on: September 29, 2013, 10:22:06 PM »

Although the factory did not install 427 engines in '68 Camaros, unless my memory is failing me, some of the high performance dealerships were installing 'new' 427's (whatever options desired) in '68 Camaros for their customers; dealers like Nickey, Baldwin Motion, etc.   Those dealerships *may* have stamped the VIN's on the blocks since they did provide some type of warranty (although it was shorter than factory I believe)..  Smiley
« Last Edit: September 29, 2013, 11:24:19 PM by 69Z28-RS » Logged

Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
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KurtS
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« Reply #3 on: September 29, 2013, 11:09:41 PM »

427 block with an MT code and a VIN? Sounds homemade....
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Kurt S
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« Reply #4 on: September 29, 2013, 11:28:18 PM »

MT indicates 396/375 in '68 (assuming it's a big block).   I am not familiar with the big block casting numbers, but was the 3916321 casting used for both 396's and 427's?? 
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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
MyRed67
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« Reply #5 on: September 30, 2013, 03:10:35 AM »

  I've checked a couple different sources, both say 3916321 casting was only used for 427's late 67 & 68  Pass. car and Corvettes.
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1967 Camaro  LOS  11A
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janobyte
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« Reply #6 on: October 02, 2013, 03:18:30 PM »

Different blocks all together. 427 is a de stroked 454 " the 302's of big blocks"  based on stock crank casting #s.
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vtfb68
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« Reply #7 on: October 02, 2013, 04:35:58 PM »

Hmm! No 454's till 1970, 427's came out in 1966.
     VT
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janobyte
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« Reply #8 on: October 02, 2013, 05:34:23 PM »

Different stroke (longer stroke) 454's  ,same  bore. Point being different block 396 (402's) vs 427's/454's. Rotating assemblies non-interchangeable between the two.
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vtfb68
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« Reply #9 on: October 02, 2013, 06:11:34 PM »

Point being, the 454 would be a STROKED 427, would it not?
    VT
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05C LA RS/SS U2 712 L34 M21 BR
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MyRed67
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« Reply #10 on: October 02, 2013, 06:37:23 PM »

Point being, the 454 would be a STROKED 427, would it not?
    VT
Exactly, being that the 427 came first.
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1967 Camaro  LOS  11A
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Mike C.    NW - Illinois
janobyte
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« Reply #11 on: October 02, 2013, 08:35:35 PM »

Agreed  Grin      here is a link to chevy casting numbers/years.




                                                        http://outintheshop.com/faq/casting/castings2.html


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