1966 CHEVROLET suburban engine question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1966burb · 10-15-2018, 11:43 PM

I want to verify the date on the engine block of the 327 that came out of my 1966 Suburban. Casting # on rear of block is 3858174. The other casting numbers I find are on the back of the block which would be under the flywheel. H5 174. Is this the date or do I need to look somewhere else for the date? Thanks, Jim

**Captainfab** · 10-16-2018, 12:38 AM

The casting date is cast into the block on the passenger side of the block, above where the flywheel is. It does consist of a letter which corresponds to the month of the year, then the day of the month and then the year as a single digit.

1966burb · 10-16-2018, 11:32 PM

Here is a photo of the back of the block. Any ideas on date?

**Captainfab** · 10-17-2018, 12:19 AM

That looks like it is behind the flywheel.....I do not see any date code there. The date code is located where I previously said.

This is on a big block but a small block casting numbers and date codes are in the same location.

http://www.67-72chevytrucks.com/vboa...d.php?t=773368

1966burb · 10-17-2018, 01:20 AM

just had to look in the correct spot and scrape off some grease to find it!

**Captainfab** · 10-17-2018, 11:16 PM

Does that say B 4 6 ? If so, the block was cast on February 4th 1966. The casting number does show to be a 1964-67 327. What is the stamping on the front pad?

1966burb · 10-18-2018, 10:02 AM

Yes B 4 6 . I will check stamped number on front.

1966burb · 10-21-2018, 10:31 AM

stamping on front reads FO2O9YD

**VictoriaHardware** · 10-21-2018, 08:15 PM

So far so good. Block cast on Feb 4, final assembly on Feb 9. At Flint Engine Plant on Bristol Road, which is gone now.

**Captainfab** · 10-21-2018, 11:51 PM

Here is the suffix code info.

http://www.nastyz28.com/gm-chevy-cod...-suffix-10.php

1966burb · 10-22-2018, 09:55 AM

Thanks for all the information and help. Everything seems to line up good as original engine. J

**VictoriaHardware** · 10-24-2018, 12:34 PM

Quote:

Originally Posted by Captainfab

Here is the suffix code info.

So YD = Powerglide w/ A.I.R.

Your motor had A.I.R. (smog pump) ? Was it originally sold in California?

1966burb · 10-25-2018, 12:06 AM

It does have the plugs in the exhaust manifolds where the A.I.R. system used to tie in.

10-15-2018, 11:43 PM	#1
1966burb Registered User Join Date: Jul 2013 Location: Maltby WA Posts: 435	1966 CHEVROLET suburban engine question I want to verify the date on the engine block of the 327 that came out of my 1966 Suburban. Casting # on rear of block is 3858174. The other casting numbers I find are on the back of the block which would be under the flywheel. H5 174. Is this the date or do I need to look somewhere else for the date? Thanks, Jim

10-16-2018, 12:38 AM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: 1966 CHEVROLET suburban engine question The casting date is cast into the block on the passenger side of the block, above where the flywheel is. It does consist of a letter which corresponds to the month of the year, then the day of the month and then the year as a single digit. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

10-16-2018, 11:32 PM	#3
1966burb Registered User Join Date: Jul 2013 Location: Maltby WA Posts: 435	Re: 1966 CHEVROLET suburban engine question Here is a photo of the back of the block. Any ideas on date? Attached Images

10-17-2018, 12:19 AM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: 1966 CHEVROLET suburban engine question That looks like it is behind the flywheel.....I do not see any date code there. The date code is located where I previously said. This is on a big block but a small block casting numbers and date codes are in the same location. http://www.67-72chevytrucks.com/vboa...d.php?t=773368 __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

10-17-2018, 01:20 AM	#5
1966burb Registered User Join Date: Jul 2013 Location: Maltby WA Posts: 435	Re: 1966 CHEVROLET suburban engine question just had to look in the correct spot and scrape off some grease to find it! Attached Images

10-17-2018, 11:16 PM	#6
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: 1966 CHEVROLET suburban engine question Does that say B 4 6 ? If so, the block was cast on February 4th 1966. The casting number does show to be a 1964-67 327. What is the stamping on the front pad? __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

10-18-2018, 10:02 AM	#7
1966burb Registered User Join Date: Jul 2013 Location: Maltby WA Posts: 435	Re: 1966 CHEVROLET suburban engine question Yes B 4 6 . I will check stamped number on front.

10-21-2018, 10:31 AM	#8
1966burb Registered User Join Date: Jul 2013 Location: Maltby WA Posts: 435	Re: 1966 CHEVROLET suburban engine question stamping on front reads FO2O9YD Attached Images

10-21-2018, 08:15 PM	#9
VictoriaHardware Senior Member Join Date: Nov 2012 Location: Southeast Michigan Posts: 801	Re: 1966 CHEVROLET suburban engine question So far so good. Block cast on Feb 4, final assembly on Feb 9. At Flint Engine Plant on Bristol Road, which is gone now.

10-21-2018, 11:51 PM	#10
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: 1966 CHEVROLET suburban engine question Here is the suffix code info. http://www.nastyz28.com/gm-chevy-cod...-suffix-10.php __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

10-22-2018, 09:55 AM	#11
1966burb Registered User Join Date: Jul 2013 Location: Maltby WA Posts: 435	Re: 1966 CHEVROLET suburban engine question Thanks for all the information and help. Everything seems to line up good as original engine. J

10-25-2018, 12:06 AM	#13
1966burb Registered User Join Date: Jul 2013 Location: Maltby WA Posts: 435	Re: 1966 CHEVROLET suburban engine question It does have the plugs in the exhaust manifolds where the A.I.R. system used to tie in.



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