318 I D

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RAT ROD AL

RAT ROD AL

MOPAR ARCHEOLOGIST - one parts hoard at a time!
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I picked up this 318 today Just checking the #s and parts installed on it. The guy didn't know anything about it other than it ran when some one pulled it. Anyway I thought 1967 was the first year for the LA 318. This one has 66 cast on it. What gives? looking at the wrong #s?

And then the head #s best I can make out are-2858920 , any info on those ?
Has some cool Valve covers that I have not seen. ( I know not factory). I don't know if they are old school or more modern.

And then the distributor . After market also but what ? Just got this thing home haven't had time to look it over to much. Any info o any of it. Enlighten me !! Thanks
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It's an early casting for the 67 model year, that's all.
 
Keep the info coming, Is that a 66 a body motor mount bracket on the rt side?

What about the dizzy? I pulled the cap and it had mag window rotor like a pertronix kit. and it has that chrome box on the housing that works all the magic.
 
I have a distributor like that for a big block. Mine was made in China and has a hei looking module in the box on the side. It came in a box of stuff and I haven’t used it yet, mostly because I would have to buy new plug wires.
 
kind of like a '70 car, but build date is '8-8-69
 
OK I found this chart. These heads I have must be the 2658920--- 318 head


LA Small-Block Mopar Cylinder Head Casting Numbers

2268341 – 1962-1967, 318 LA-series small-block, 1.84/1.56 valves

2465315 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves

2532080 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves

2536178 – 1966, 273 LA-series small-block,1.78/1.50 valves, early

2658234 – 1966, 273 LA-series small-block,1.78/1.50 valves, late

2658920 – 1967, 273 LA-series small-block, 1.88/1.50 valves
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
2658920 – 1967, 318 LA-series small-block, 1.78/1.50 valves
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
2658234 – 1967, 318 LA-series small-block, 1.78/1.50 valves

2843675 – 1967, 318 LA-series small-block, 1.78/1.50 valves

2843675 – 1968-1969, 273 LA-series small-block, 1.78/1.50 valves
 
Same casting # for 273 or 318 heads, altho intake valves are different sizes. Similar to how 3418645 rods used for 318 or 340.
 
2465330 273 1964-66 LA
2806030 273 1966-69 LA
2463252 273 - LA
2536130 273 1965-69 LA
2806130 273 1966-69 LA
2264230 318 1960-66 A Polysphere
2468230 318 - A Polysphere
2532630 318 - A Polysphere
2466090 318 1967-74 LA
2806030 318 1966-69 LA
2806030 318 1967-74 LA
2536030 318 1967-75 LA < < XXXXXXXXXXXXX
2566080 318 - LA
4104230 318 - LA Race - Painted Orange
2780930 340 1968-73 LA Except T/A & AAR
3577130TA 340 - 6 bbl 1970 LA T/A & AAR
1944929
 
OK so whats this right side mount off or for ?
 
4spdragtop said:
Same casting # for 273 or 318 heads, altho intake valves are different sizes. Similar to how 3418645 rods used for 318 or 340.
Click to expand...

318 and 273 both have 1.78" intake valves and 1.56" exhaust valves...
 
Last edited:
RAT ROD AL said:
I picked up this 318 today Just checking the #s and parts installed on it. The guy didn't know anything about it other than it ran when some one pulled it. Anyway I thought 1967 was the first year for the LA 318. This one has 66 cast on it. What gives? looking at the wrong #s?

And then the head #s best I can make out are-2858920 , any info on those ?
Has some cool Valve covers that I have not seen. ( I know not factory). I don't know if they are old school or more modern.

And then the distributor . After market also but what ? Just got this thing home haven't had time to look it over to much. Any info o any of it. Enlighten me !! ThanksView attachment 1715329583 View attachment 1715329584 View attachment 1715329585 View attachment 1715329586 View attachment 1715329587 View attachment 1715329588 View attachment 1715329589
Click to expand...

This can help you id the engine block:

How to ID a Small Block Engine Block:
 
RAT ROD AL said:
OK I found this chart. These heads I have must be the 2658920--- 318 head


LA Small-Block Mopar Cylinder Head Casting Numbers

2268341 – 1962-1967, 318 LA-series small-block, 1.84/1.56 valves

2465315 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves

2532080 – 1964-1965, 273 LA-series small-block, 1.78/1.50 valves

2536178 – 1966, 273 LA-series small-block,1.78/1.50 valves, early

2658234 – 1966, 273 LA-series small-block,1.78/1.50 valves, late

2658920 – 1967, 273 LA-series small-block, 1.88/1.50 valves
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
2658920 – 1967, 318 LA-series small-block, 1.78/1.50 valves
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
2658234 – 1967, 318 LA-series small-block, 1.78/1.50 valves

2843675 – 1967, 318 LA-series small-block, 1.78/1.50 valves

2843675 – 1968-1969, 273 LA-series small-block, 1.78/1.50 valves
Click to expand...


4spdragtop said:
I was going by the chart Al posted in reply #9. Its stating different sizes?
Click to expand...


I've never heard of a 273 or 318 coming with a 1.88" intake valve... The 1.88" intake valve came out with the 360 in 71 and then on the 340 in 72...

The chart that Rat Rod Al posted may have an error/typo... Ask why would the 67 273 have 1.88" intake valves when rated at 235 HP when the 66 Hi-Po 273 with 275 HP had the 1.78" intake???? You would think that the 275 HP version would have gotten the bigger valve also... It doesn't make sense...

I was originally going by memory, so I looked up the specs on MyMopar and in the 67 service manual and the 273 had 1.78" intakes and 1.56" exhaust valves... I originally said 1.70" and 1.56" valves from memory....

If you put a 1.88" intake in the 273 you need to notch the cylinder as the valve may hit the bore or shroud the flow... Same with a 2.02" intake on a 273...

You can get away with a 1.88" or 2.02" intake on a 318 because of the larger bore...

I have installed 340/360 heads on a 318 with 2.02" intake valves and ran them for hundreds of thousands of miles and no problems...

I also have had my head guy install 360 1.88" intake and 1.60" valves on 920 heads... He also ported them for me and I'm building a 72 318 with them... This way I can have the increased flow of the larger valves and get the increase in compression from the closed chambers...

See post #3 in this thread that I made on it:

How Much Can Heads Improve Compression???

SB Head Specs.jpg


67 Service manual:

67 SB Valves 02.jpg
 
Last edited:
67 engine cast in 66
8920 are closed chamber heads approx 65cc with 1.78/1.50 valves.
67 318 came with flat top pistons no valve reliefs a real 9:1 motor.
It probably has a forged crank.
 
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