New Here And Have A Question

[84highsierra]

im new to this site hoping i could get some help. i just bought a 1984 GMC High Sierra 4x4 and i was told it has a 400 that was put in it. how can i tell if it is or not? i dont really know to much about these trucks yet. just wondering if anyone could help me out.

 

 

[alaska511]

400 has an 8" harmonic balancer

 

350 is 6.75"

[84highsierra]

400 has an 8" harmonic balancer

 

350 is 6.75"

 

 

any other way of telling? cause the sticker under the hood from the factory says it a 5.0 which is a 305 or something isnt it?

[Airspeed-Alive]

Can't help you too much here, but welcome to the site!

 

You could check for a number on the block, but that can be difficult.

[84highsierra]

Can't help you too much here, but welcome to the site!

 

You could check for a number on the block, but that can be difficult.

thanks ill prob. be on here a lot haha cause im always messing with it since the second i got it haha ( like 3 days ago )

[alaska511]

400 has an 8" harmonic balancer

 

350 is 6.75"

 

 

any other way of telling? cause the sticker under the hood from the factory says it a 5.0 which is a 305 or something isnt it?

 

 

 

 

 

 

Yes, the 5.0 is a 305.

You asked if you could tell if it was a 400, and this method will tell you if it is.

As for which engine it is exactly, besides a 400, you will need the engine block casting number.

[84highsierra]

400 has an 8" harmonic balancer

 

350 is 6.75"

 

 

any other way of telling? cause the sticker under the hood from the factory says it a 5.0 which is a 305 or something isnt it?

 

 

 

 

 

 

Yes, the 5.0 is a 305.

You asked if you could tell if it was a 400, and this method will tell you if it is.

As for which engine it is exactly, besides a 400, you will need the engine block casting number.

 

 

ok thank you. i will try and use that method tomorrow to figure it out.

[alaska511]

400 has an 8" harmonic balancer

 

350 is 6.75"

 

 

any other way of telling? cause the sticker under the hood from the factory says it a 5.0 which is a 305 or something isnt it?

 

 

 

 

 

 

Yes, the 5.0 is a 305.

You asked if you could tell if it was a 400, and this method will tell you if it is.

As for which engine it is exactly, besides a 400, you will need the engine block casting number.

 

 

ok thank you. i will try and use that method tomorrow to figure it out.

 

 

 

As you are standing in front of your truck, the number will be on a raise pad on the LEFT front, at the firedeck (below the cylinder head)

 

You can Google the engine number to figure out what it is.

[Airspeed-Alive]

This link should help you once you get the number: http://www.nastyz28.com/sbchevy/sblock.php