Author Topic: Block identification  (Read 255 times)

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Offline mines80

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Block identification
« on: April 10, 2020, 06:44:03 am »
Wondering if theres a way to tell from the outside if a block is a four bolt main "boss" block or not.  I'm not well informed on these blocks.  Any help would be appreciated guys.

Offline dso17

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Re: Block identification
« Reply #1 on: April 10, 2020, 12:40:46 pm »
Look at the Date and If a VIN, stamped on all production Boss 351 blocks
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Offline gt350hr

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Re: Block identification
« Reply #2 on: April 10, 2020, 04:11:13 pm »
    No guarantee without pulling the pan because four bolts and two bolts were made  with DOAE-L and D2AE-CA casting numbers , SK and XE blocks were  all 4 bolt main.
      Randy
« Last Edit: April 13, 2020, 09:06:06 am by gt350hr »
'66 GT350H (6S477)1of 18 white w/blue side stripes - drag raced mostly w / Boss 302 power for 35+ years
68.5 Cobra Jet fb  white w/blue c stripe 4spd
sorry never owned a Boss car just engines
cover Car Craft July '77 with my Boss powered GT350
cover/article Mustang Illustrated Fall 1987 w/all aluminum SK 351 Cleveland powered Mustang II
cover /article Modified Mustangs Feb 2011
cover Mustang Monthly  June 2014

Offline svo2scj

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Re: Block identification
« Reply #3 on: April 11, 2020, 06:57:28 am »
When it comes to Cleveland blocks and "guessing" .......you really can't.    Date codes get you SOME info and the way you look at it is;

DOAE-J (don't bother, only "converted" blocks and NO VALUE to Boss guys)

DOAE-L  "if the date is between 0K and 1E"  MAYBE worth the time to look, as Boss owner may pay for a certain date code IF restoring a car.   

D2AE-CA  REAL crap shoot, as it seems there were more 4 bolts than the 1806 71 R Code produced .  Everyone has one (or 6) as they are like Azzholes.  CAPS are worth more than the block , if finding a 4 bolt. 

Mark
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Offline mines80

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Re: Block identification
« Reply #4 on: April 11, 2020, 10:46:25 am »
Thanks for the info guys, I appreciate the data.  My dad has 2 bare blocks he's found cleaning up his garage!  And as far as date codes go, "6L7" would mean 1996 Dec 07, right?  I was giving a Ford racing block with this as a date.  Cleveland mains. 

Offline svo2scj

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Re: Block identification
« Reply #5 on: April 12, 2020, 10:17:27 am »
When you reread your posts....."Can you tell from the outside?"  and  CLEVELAND MAINS, trying to figure out IF you are getting the info a couple of days behind and don't have enough for us to help!

Last post sounds like R351 blocks (not the production ones).    It's funny , so so much is coming out of the woodwork right now it is getting hard to keep track, compare FB photo posts with forum posts /connect people and determine need/value and "peoples efforts" (after years of sitting on stuff).

MY suggestion is to take photos, use a forum like this to help ID....then find the best place to sell.   IF in fact a R351 this might not be the best place.   IF you are remote to your dad, he has no help to take photos "gather ALL the info" you can.    We have seen it all, have these style blocks and can even tell the team it came from if prepped for racing.

Mark
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517 861 7630

Offline AlexM

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Re: Block identification
« Reply #6 on: April 12, 2020, 03:02:04 pm »
Thanks for the info guys, I appreciate the data.  My dad has 2 bare blocks he's found cleaning up his garage!  And as far as date codes go, "6L7" would mean 1996 Dec 07, right?  I was giving a Ford racing block with this as a date.  Cleveland mains.

6 Is the year in a decade, so it could be 1976, 1986, 1996 etc.. L7 is Dec 07th (at date that will live in infamy) What do either of those two blocks have for any other casting numbers? The engineering number will help determine which decade it should be in.
--Alex
1969 Mach 1
1970 BOSS 302 0F02G120146
1970 BOSS 302 0F02G119233 W code
1969 BOSS 302 9F02G196425
1969 BOSS 429 9F02Z198888 KK 1982