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350 numbers


Hello all   can you help me figure this motor out,,year ect any info will help  thank you !!   618 block heads 441 Z ?  front casting numbers  791155811   TO6I HM  



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Do you have the full casting's for the block & heads? I presume when you say "front casting numbers" you're talking about the stampings on the passenger side of the block ahead of the cylinder head.

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



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HM engine stamping suffix is:
1965 327 in a Corvette or Chevy II,
1968 327 in a full size car,
1969 350 in a full size car.

Block casting # 3956618 is:

1969 327 - 235 hp.

1969 350 - 250, 255 & 300 hp.

1969 350 - 255 & 300 hp.

plus Chevelle, Chevy II, Camaro & Corvette engines.

"This block was identical with # 3932386 except for minor bulkhead casting changes.  This block was used from approximately January 1969 through April 1969.  This block was used in all 327 and low performance 350 applications although some 300 hp applications have been verified.  Chevrolet documentation shows this block was used in both 2- and 4- bolt configurations. 

Cylinder Head casting # 3932441 is:

1969 350 - 250 & 255 hp.   Full Size, Chevelle, Camaaro & Chevy II.

1.94 / 1.50 valves, 76.26 combustion chamber.

 

So, with all of this, I'd say you've got a 1969 350 2 bbl engine.





-- Edited by seventy2plus2 on Friday 10th of May 2019 07:53:36 PM

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



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hi a 618 block came out in 1969 jan-april 1969..... 441 heads never came on a z28 .... H M IS ATRUCK CODE MOTOR IS IT A 4 BOLT AND IS IT FOR SALE


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Canadian Poncho Superstar!

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Does the 791155811 match the last 9 digits of VIN number of the car?

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



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thanks clint no the motor and vin dont match close but no..the motor is painted blue and thats what confused me..it is a 2 barrel .. glad to hear its at least a 69 and a 350,,motor hasnt ran since 87 so going to pull the plugs and put some WD 40 and some oil in it for a while and pull the distrib and prime it before even seeing if it turns over don;t want to break any rings ..been inside all that time so hoping Thank you so very much guys !!

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Hi all..A while back the motor had a slight knock, after trying to find it I decided to pull the mount bolts and lift the motor up and took off the pan to check and replace rod bearings,after looking at the bearings they looked brand new, knew I was on the wrong track after finding NO  silver or gold glitter in oil or pan  so the motor must have been redone before it went into storage. later found out the knocking was a sticky lifter ,prob a little ridge from sitting so long, all good now !! .the question I have is the bearings are standard size,so did it get just a ring and bearing job,or did it get bored also.?? is there anyway other than taking the head off it to
check stamp on pistons or bore size ?..really not that important to me to take a head off but would be kinda good to know Thanks all



-- Edited by Bill shuba on Saturday 20th of July 2019 08:27:06 AM

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