used 350 HELP PLEASE

[murraygmc]

OK fellas i bought a used 350 4 my truck (85 gmc lwb 4x4 4 speed manual) iv got a few questions  1 i think its a 75 350 that should slide right in to my truck right ? 2 is there any web sites that i can look up the id of the numbers on the block    I'm thinking the numbers are the ones above the flywheel  on top the block ? 3 and last it has a 2 barrel carb  with a 2 barrel in take iv got a 4 barrel intake i can put on it  will the 4 barrel carb barrel off my lil 4.3 quadra jet fit or be big enugh ?   is there any other info i need to know or some stuff ill need switch    and lastly all the wiring should just b able to transfer to the new 350 right  oil temp and that sorta stuff  thanks guys

[zieg85]

4.3L has different mounting perches than the V-8 but everything else should work.  The numbers on the back are casting numbers which will give you a general idea but the numbers that will tell the story is on the passenger side block behind the alternator.  I am doing the same swap in my 86 but mine is a 2WD.

[murraygmc]

so what do i do about the perches

[zieg85]

You will need to get a set from a 4 WD that had a V-8. 

http://www.nastyz28.com/chevy-engine-code-stampings.php should tell you about what exactly the application of your engine

[murraygmc]

ok now by perches you mean motor mounts ?    im not shure if the motor came out of a 4x4 or 2x4  do i need the (perches )  from a 75 truck ?  or what  im sorrry for all the questions  but now im lost 

[zieg85]

http://forum.73-87chevytrucks.com/smforum/index.php?topic=6143.30  has pictures of what I am talking about on the 2 WD frame.

[enaberif]

Right by the valve cover on the passenger side in the front will be a series of numbers which will classify your motor.

Position #4:
http://www.mortec.com/location.htm

Can use this too:
http://www.nastyz28.com/chevy-engine-code-stampings.php

[Captkaos]

ok now by perches you mean motor mounts ?    im not shure if the motor came out of a 4x4 or 2x4  do i need the (perches )  from a 75 truck ?  or what  im sorrry for all the questions  but now im lost 

It doesn't matter what the motor came out of.  All SBCs are the same.
You just need the engine mounts for a V8 instead of a 4.3L.  Any 4x4 will work.

[murraygmc]

ok cap bear with me now are you talking about the mounts on the motor right ? i have mounts on the 350 and the 4.3 what exactaly do i need to do to install the 350 in my 85  4x4  what is  these perches ? what is a sbc ??  im sorry im yanking my 4.3 out this weekend  and would like to put my 350 in, so sorry 4 all the questions but iv got people coming to help me ind i d like to be prepared  be for thay get hear

[Captkaos]

SBC = Small Block Chevy
The V8 engine and frame mounts are different than a V6 as far as I know.  You only need these to install a V8, the stands will be universal.
You need the engine mount and its corresponding frame stand mount to bolt it in.   Should be available from NAPA or any good parts store (or salvage yard)

[murraygmc]

so  i can buy the frame part of the mount from nappa thanks is thare a name for that or if i just say frame mount thatwoll know what i mean

[Captkaos]

I would call it the frame mount.

[murraygmc]

ok thanks i calld them and thay had two in stock  and thay are like 10 bucks a pece so its all ready to go i guess, i just hope the tranny mounts up it should right ??

[zieg85]

You won't have to move the tranny at all.

[BlueCollarRon]

Hey good luck with your swap out bro, I pulled my 350 out last thursday, and I am still working on my truck.  I had alot more to do then just swap the motors, though.  I had to pull exhaust pipes on a 3+3 King Cab, long bed, 4x for my truck.

Anyways hope you get everything buttoned up easily enough.