How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
10949255
Type Your Chevy Question Here...
GM Tech (Cam) is online now
A new question is answered every 9 seconds

Chevrolet: I am trying to I.D a 4.3 engine. 4-Barrel intake fuel

Customer Question

I am trying to I.D a 4.3 engine.
4-Barrel intake
fuel pump
S/N T0315DPD
Submitted: 1 year ago.
Category: Chevy
Expert:  Gary replied 1 year ago.
Welcome! My name is ***** ***** I will do my best to assist you with this problem.Ask me about added features such as phone contact anytime if you wish !
can you get me the block casting number ?
Customer: replied 1 year ago.

I believe the engine was in a 1984/ 1986 Blazer. It has a factory 4 barrel intake and a bolting pad for a manual fuel pump. The number on the block is T0315 DPD.

I believe it was built in Tonawanda March 15.

I have installed it in a 1940 Chevrolet truck w/350T.

I have never started it. I am now ready to rebuild the engine.

Expert:  Gary replied 1 year ago.
but can you give me the block casting number on the back of the block ?
Customer: replied 1 year ago.

I will search for it tonight.

Expert:  Gary replied 1 year ago.
ok
Customer: replied 1 year ago.

Rear of Block

GM 4.3 LG

3SG1

Front of Block

T0315DRD

1Gr180L44

Customer: replied 1 year ago.

I have not received a reply from the info I sent Wednesday, May 20, 2015 10:44 P.M EST ?

Rear of Block GM4.3

3SG1

Front of Block

Customer: replied 1 year ago.

I have not received a reply from the info I sent Wednesday, May 20, 2015 10:44 P.M EST ?

Rear of Block GM4.3

3SG1

Front of Block T0315DRD

1GR190L44

Bob

Expert:  K. Wiggins replied 1 year ago.
Hello Bob, The easiest way to identify it would be via the DRD suffix code from the T0315DRD stamping, however the suffix code listing for these engines are scarce and I cannot find one for this.
There should be an 8 digit casting number starting with a 1 on the block, this would give some more insight if you could find that one and let me know what it is.
Also does it have a metal or plastic timing cover? This will help narrow down the year range.
I do a fair bit of performance work on 4.3's and will do my very best to help you.