What brand/PN spark plugs 4 a stock Pacer 258 2BBL

And I believe that Champion makes more varieties of plugs than any other plug maker.

Gents

What I am saying is the company used is

from what ever company that answered the

bid order of a item.  As you know, the spec's

of a item is in the bid order. ( This part is from

 

The later use of AC, NGK or whatever make

Uh, go back to the drawing board? Been there, got my degree in automotive mechanics and design....

Over the decades many a special plug was made to the engine makers specifications.......... so it wasn't always limited to what the plug makers produced or wanted to produce.
 - you are stating that their engines for many years revolved around the spark plugs available? I have my doubts - from where do you get this info? Speculation or knowledge?
Heads and chamber shapes and plug placement was determined not by what the plug makers offered that year, but by design needs, obviously within certain quidelines - they aren't going to change the thread diameter and pitch on a whim and there were limits to what could be requested, but within size standards, etc - they had some latitude.
But reach, heat range, etc. - that was the automaker, not the plug maker.
IMO, if what you claim fits, then AMC could have used Champion for 5 or 6 years, then when they went to a different design, move to AC, then autolite, then NGK, etc. since heat range needs changed, among other things.

Besides, we were not speaking of reach and thread pitch, we were talking heat range and brand. Different topics.  Champion were the original plug, start with the original heat range.

billd wrote: We used to convert a lot of 6v vehicles and tractors. Got the 8v batteries, reset the regulators. On others, we upgraded to a full 12v system. Most tractors we did that to. Man, those 6v starters really whirred! Dad's old 52 Ford cranked really slowly, but was a sure-starter most of the time. I'm thinking that Impala was a 283.............. I can still visualize the oil film on all his glass.......... and the black back bumper. (oil)

I converted a neighbors 8N to 12 volts, it simply would not start, and it was in good tune too................kit came with alternater, wiring, 12 volt coil, pretty easy to do and now starts good. 

billd wrote: That poor little chebbie has some low compression, doesn't she? Wow. Although a friend in college found he had to pour about a quart of AFT down the carb each morning to give his 63 chebbie Impala enough vacuum to start......... I suspect his compression was even lower. Oddly enough, he never complained of fouled plugs! I wonder what he ran?

yea, I think they did  it so the 6v could roll it over fast enough to start... it's pretty cool tho. the engine 'winds down' when it's shut off, but it will also fire up on the 2nd or 3rd crank... a '63 Impala would have at least 8:1 compression, for whichever engine it had...  I had to use the ATF every other week for the Rambler. it only pulled 10 HG but it would go down to 6 HG when it needed the ATF.. odlly enough, it was always quick starting. within a crank and the choke was disconnected


Edited by matt167 - Nov/16/2009 at 10:42am