Suffix Code

[Clintond]

I am trying to identify a free 305 I got. The engine code is K0206B41. It has 416 cylinder heads. I was told it came out of a Monte Carlo. The partial VIN is 2G2260230. Thanks for the help.

[urwurznitmahre]

Re: Suffix Code

does it matter..
it's either the normal 305 (145 or 165 hp)
or the h 305(h inn vin at the eighth di.) 180hp
unless it's out of an f body..
then it could be a whap'n 225hp

[Clintond]

Re: Suffix Code

I got curious when it wasn't listed anywhere

[Monster]

Re: Suffix Code

Don't worry Clintond, give it some time, someone who knows, will come along and provide some helpful advice.
BTW - welcome to the BS forum, I think the best car site on the planet !!
;)

[urwurznitmahre]

Re: Suffix Code

I got curious when it wasn't listed anywhere

u try mortec.com
it might be a 4.3

[Clintond]

Re: Suffix Code

Its stamped 305. I need to get the number off the back of the block and look it up.

[min301]

Re: Suffix Code

I am trying to identify a free 305 I got. The engine code is K0206B41. It has 416 cylinder heads. I was told it came out of a Monte Carlo. The partial VIN is 2G2260230. Thanks for the help.

1.84"/1.5" valves, 58cc chambers

I've found some reference to the L-69's using the 416 heads.

Trade it for a 350, IMO.

[Clintond]

Re: Suffix Code

I got it for the heads. The 882s on my 350 are shot. I'm going to practice porting on the 416s and see what the extra combustion ratio does. The 305 block is going to my dad for his 89 ext cab.

[min301]

Re: Suffix Code

So you have 4 valve reliefs, and dish on the pistons?

[squirrel]

Re: Suffix Code

2 = pontiac
G = 1986

from the partial vin

Good luck figuring out the rest.

[urwurznitmahre]

Re: Suffix Code

2 = pontiac
G = 1986

from the partial vin

Good luck figuring out the rest.

that would be an f body motor
'85 was the last carb'd ones so it was tbi
the block have a one piece rear main seal (it'll be an alum part at the back of the block at the crank
before you do anything, have the heads cleaned and mag'd for cracks..
even if they are cracked they're still good to learn on..
vortec's will out flow them.. even after your done..
good luck.. if body's ran hot.. they're more than likely cracked.. but no one knows till they're mag'd

[squirrel]

Re: Suffix Code

The assembly plant code is not right for it to be an F body motor.

[urwurznitmahre]

Re: Suffix Code

The assembly plant code is not right for it to be an F body motor.

full sized wagon, or g body wagon..
the g/p 2+2 was a 305 sbc.. if it is a g/p 2+2 engine
don't part it..
a guy with that car is or will be looking for that block

[Mr4Speed]

Re: Suffix Code

The 416 casting heads were used on 80-86 305's. LG4's, L69's(305HO), and LB9's(TPI). They should have perimeter bolt valve covers and the old style pre-86 intake bolt pattern with all the intake bolts at the same angle. They're a decent budget 305 head.

K-McKinnon engine assembly plant
02-assembly month
06-assembly day
B41-application(I don't know which this is)

The partial VIN is confusing because GM changed the system in the 80's. 262230 should be the sequence number for the car it went into. Depending what year it is the G could denote it's a base 305 4bbl (LG4) or the Farmington MA assembly plant.

Plus, who knows if the heads are original to that block. Pull a head and see what pistons are in it. LG4's had dished pistons, L69's and LB9's had flat tops with 4 valve reliefs.

If you really want to know you'll need to find the casting dates on the block and heads.

[squirrel]

Re: Suffix Code

I thought the partial VIN was still Division, Year, Plant, Serial

I could be wrong