700r4 parts question

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Apr 18, 2010 | 09:56 PM

chas0218

Thread Starter

Senior Member

Joined: Jun 2008

Posts: 660

Likes: 1

From: Corning NY

Car: 86' IROC

Engine: 388

Transmission: Built 700r4

Axle/Gears: 3.08 non-posi

700r4 parts question

I was wondering if anyone could give me a hand identifying what the 2 trannys i have.

1st:
Number on pan rail: 9MAM101B
30 spline
K on bellhousing
MD8 on bell housing
20 on bellhousing
8663548 on oil pump
4 pin connector

2nd:
Number on pan rail: 4KM22ON Might be 4KM220N not sure if it is normally letters on the end or numbers.
27 spline (i think)
8642380 on oil pump
4 pin connector

If anyone can let me know the trick to figuring out the year and any specs that would be great.

I'm looking to buy a pump rebuild kit for the 1st tranny but not sure of any specs so I can purchase one.

Thanks,
Chas

Apr 18, 2010 | 10:17 PM

KNBlazer

Senior Member

Joined: Feb 2010

Posts: 1,125

Likes: 1

From: San Diego, California

Car: Trailblazer EXT 4.2 (Firebird Form)

Engine: 5.1 4bbl

Transmission: 700R4 Mega Raptor Level 4

Axle/Gears: 2.73

Re: 700r4 parts question

http://images.google.com/imgres?imgu...26tbs%3Disch:1

Apr 19, 2010 | 07:20 AM

chas0218

Thread Starter

Senior Member

Joined: Jun 2008

Posts: 660

Likes: 1

From: Corning NY

Car: 86' IROC

Engine: 388

Transmission: Built 700r4

Axle/Gears: 3.08 non-posi

Re: 700r4 parts question

Thats a sweet pic/site thanks a ton!

Apr 19, 2010 | 10:03 AM

Pro Built Automatics

Supreme Member

Joined: Jul 1999

Posts: 3,484

Likes: 56

From: Calimesa, California, U.S.

Re: 700r4 parts question

The first is a 1989, the second an early 1984.

Apr 19, 2010 | 11:23 AM

chas0218

Thread Starter

Senior Member

Joined: Jun 2008

Posts: 660

Likes: 1

From: Corning NY

Car: 86' IROC

Engine: 388

Transmission: Built 700r4

Axle/Gears: 3.08 non-posi

Re: 700r4 parts question

I just picked up another 700r4 it's serial looks like this: (x's signify letters)

1x xx then some numbers.

I just glanced at it quick but it only had the number 1 next to 1 letter so does that mean its a 1991? I verified that it indeed is a 700r4 from the pan and non removable bellhousing. What exactly is all the space for?