« previous next »
Pages: [1]   Go Down

Author Topic: How to tell if you have a 305 or 350.  (Read 20252 times)

Offline boyer61

  • Newbie
  • Posts: 32
How to tell if you have a 305 or 350.
« on: October 29, 2011, 05:42:35 pm »
I know there are casting numbers on the rear of the drivers side on the block. What the easiest way to see it? I tried from the top, I took some pictures near the oil pressure switch area, doesnt look anything like casting numbers, where are they exactly? 
Logged

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7599
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: How to tell if you have a 305 or 350.
« Reply #1 on: October 29, 2011, 05:48:20 pm »
Logged
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline boyer61

  • Newbie
  • Posts: 32
Re: How to tell if you have a 305 or 350.
« Reply #2 on: October 29, 2011, 05:57:28 pm »
If im reading this right the #s are on the front of the passengers  side??
« Last Edit: October 29, 2011, 05:59:43 pm by boyer61 »
Logged

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7599
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: How to tell if you have a 305 or 350.
« Reply #3 on: October 29, 2011, 06:06:33 pm »
Quote from: boyer61 on October 29, 2011, 05:57:28 pm
If im reading this right the #s are on the front of the passengers  side??



The casting numbers are on back but the numbers that should give you the most info is behind the alternator on the engine block pad.  Look through and it should tell you exactly what your engine came from.
Logged
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline boyer61

  • Newbie
  • Posts: 32
Re: How to tell if you have a 305 or 350.
« Reply #4 on: October 29, 2011, 06:07:41 pm »
I only seen 1 set of #s 1222CPY
Logged

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7599
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: How to tell if you have a 305 or 350.
« Reply #5 on: October 29, 2011, 06:10:06 pm »
CPY    1977   305    LG3    U    145    2    F A X

Looks like it's a 1977 305
Logged
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline boyer61

  • Newbie
  • Posts: 32
Re: How to tell if you have a 305 or 350.
« Reply #6 on: October 29, 2011, 06:14:09 pm »
Just seen that. Guy i bought it from said it was an 85..  What does FAX mean or stand for?
Logged

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7599
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: How to tell if you have a 305 or 350.
« Reply #7 on: October 29, 2011, 06:19:52 pm »
Quote from: boyer61 on October 29, 2011, 06:14:09 pm
Just seen that. Guy i bought it from said it was an 85..  What does FAX mean or stand for?

It could have come in a Camaro, Nova or Chevelle in 1977
Logged
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline Jeffroe2114

  • New Users
  • Posts: 1
  • Newbie
Re: How to tell if you have a 305 or 350.
« Reply #8 on: August 13, 2013, 11:58:25 am »
The # I pulled from behind the alternator was 171470020 K03 CRA.
Logged

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7599
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: How to tell if you have a 305 or 350.
« Reply #9 on: August 13, 2013, 03:59:56 pm »
Quote from: Jeffroe2114 on August 13, 2013, 11:58:25 am
The # I pulled from behind the alternator was 171470020 K03 CRA.

CRA    1977   305    LG3    U    145    2
Logged
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline fischebc

  • Newbie
  • Posts: 4
  • Newbie
Re: How to tell if you have a 305 or 350.
« Reply #10 on: September 09, 2013, 02:24:08 am »
I'm having the same issue trying to figure out what's in my 85 Chevy Silverado 4X4. The numbers on the casting are V0526CHS?
Logged

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7599
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: How to tell if you have a 305 or 350.
« Reply #11 on: September 09, 2013, 06:27:39 am »
Quote from: fischebc on September 09, 2013, 02:24:08 am
I'm having the same issue trying to figure out what's in my 85 Chevy Silverado 4X4. The numbers on the casting are V0526CHS?

CHS    1978   350 auto trans. LM1   L    170    4    Camaro
Logged
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline fischebc

  • Newbie
  • Posts: 4
  • Newbie
Re: How to tell if you have a 305 or 350.
« Reply #12 on: September 09, 2013, 01:30:03 pm »
Quote from: zieg85 on September 09, 2013, 06:27:39 am
Quote from: fischebc on September 09, 2013, 02:24:08 am
I'm having the same issue trying to figure out what's in my 85 Chevy Silverado 4X4. The numbers on the casting are V0526CHS?

CHS    1978   350 auto trans. LM1   L    170    4    Camaro

Thank you sir, just wanted to verify that I was looking at the right plate. The one behind the alternator? There is another set of numbers but no letters on this one 16J308637?
Logged
Pages: [1]   Go Up
« previous next »