[azmusclecar]

I bought this 69 Camaro and I am not sure what the engine is besides a 350. This is a pic of the casting number of the head on the engine.

I do have 8mm wires and HEI.

I've tried shorty plugs NGK 5728 BMR4A. They have a 3/4 inch base instead of 5/8s as normal plugs. I cannto get them to SEAT because the 3/4 inch socket won't go in far enough on the head.

I pulled the AC DelcosR45TS and they look a bit sooty or rich. I was going to reinstall them but I'd like to know what other choice I have. I'd like to find a shorty plug, with a 5/8 inch base but also does the REACH go far enough into the combustion chamber on these heads?????

The Hooker Headers are causing me a lot of grief and I really don't want to change them out at this time.

Please give me a PLUG NAME AND NUMBER that will work in my situation. Not necessarily what works in yours, unless you have the same as what I am dealing with.

Thank you,
Rob aka AZ
PS: Can someone make out the 2nd stamping or cast number on the head please???

I did find this info on the small bloack Chevy Cylinder heads webiste: Years made, cast number, engine size, intake, and exhaust.

1979-85

462624

350

1.94

1.5

 

[allanjs]

The 2nd number is the date code. March 17,1980 in this case. I've always used Casting Numbers site for block and head numbers. Here's the link.

Search Results for '482624' - Casting Numbers .info: engine blocks, heads, and more - Casting Numbers .info: engine blocks, heads, and more

 

[David Ray]

An HEI ignition system, vs a points system, DOES NOT dictate the spark plug heat range, compression ratio/pressure and other tuning factors do.

 

[chicoman]

You need to buy a 3/4 spark plug socket not just a 3/4 socket, Im using the same ngk plugs only the BPMR 6A, same as yours, and the 3/4 spark plug socket works, just be patient with it.

 

[azmusclecar]

You need to buy a 3/4 spark plug socket not just a 3/4 socket, Im using the same ngk plugs only the BPMR 6A, same as yours, and the 3/4 spark plug socket works, just be patient with it.

Ahhhhh, now there's something I didn't know............thank you

 

[azmusclecar]

An HEI ignition system, vs a points system, DOES NOT dictate the spark plug heat range, compression ratio/pressure and other tuning factors do.

I can't supply info I don't have. The previous owner passed away and took all that with him.

The engine is not the OEM stock 350. It looks like something from the late 70s to early 80s.

 

[azmusclecar]

From my research it appears these heads are "crap" with cracking issues due to heat. I'm just trying to sort out the issues and gathering what info I can. I'm not prepared to make any big changes until I get things sorted. I just want to get it running and drive able and reliable and then try to ascertain what modifications fit in my budget, Thanks.

 

[azmusclecar]

The 2nd number is the date code. March 17,1980 in this case. I've always used Casting Numbers site for block and head numbers. Here's the link.

Search Results for '482624' - Casting Numbers .info: engine blocks, heads, and more - Casting Numbers .info: engine blocks, heads, and more

Thanks, I've bookmarked the website. 👍

 

[Worn Out Welder]

I can’t say anything about reach or heat range but this comes up from Summit

 

[azmusclecar]

Is there any ISSUE running ALL shorty plugs (8). I see some mix with the standard plugs. I bought 8 Shortys. If you haven't read the first post, I HATE HOOKER HEADERS. Yes, it needed to be said again.

 

[Worn Out Welder]

Post a picture of your headers,
Have they been altered?
I thought they were a better fit than a lot of the others.
But it’s been years and a few of the lesser brands are what I had used.

 

[azmusclecar]

 

[Worn Out Welder]

Man! ……is there any evidence of damage below?
It certainly looks odd, and I’m in agreement. The fit is horrible.
It just strikes me as being driven aft ?

 

[azmusclecar]

I don't have the funds at the moment to buy a nice set of headers that fit. I am trying to work around these, with heat sox, and shorty plugs and shortened spark plug wires.

All I know is, I HATE HOOKER HEADERS. There, I feel better now.

 

[flat tire]

i have hooker super comps on my raised port heads. passenger side i can do in 15 minutes or less. drivers side about 1 hour just on #5 and 7. i welded a 1/4" drive socket into a 3/8" drive 5/8" socket and this helps very much. also cut down a regular 5/8 socket and ground flats to use an open wrench.3/8 hose is handy for instillation. hope this helps

 

[azmusclecar]

I just bought a 3/4 spark plug socket to "TRY" to install the shorty plugs. I believe you have the angled plugs and mine are straight.

Thanks for the tips, and yes I was using a 1/4 to 3/8 insert to try to use the 1/4 rachet. Nothing seemed to work, and the constant dropping of the plug onto the floor was NOT music to me ears. But at least I got my bend over exercises done for the year. I do have a magnet tool to reach the plug that somehow ALWAYS stops rolling in the middle of the car.

Thanks again for the pics.

DID I MENTION I HATE HOOKER HEADERS??????????????

 

[Worn Out Welder]

I have used an offset box end wrench in some instances…..I’ll admit it is a little boring to have to change wrench positions so many times.
There automobiles with far worse spark plug access.
Going through fender wells, from underneath…🙄

 

[azmusclecar]

I have used an offset box end wrench in some instances…..I’ll admit it is a little boring to have to change wrench positions so many times.
There automobiles with far worse spark plug access.
Going through fender wells, from underneath…🙄

I've tried to look at every possibility from standing on my head, flipping the car upside down (thats a lie) to fenderwells,
to hiring my great grandson at union wages to change the plugs out. But then he will want a tip on top of that.

 

[Worn Out Welder]

I've tried to look at every possibility from standing on my head, flipping the car upside down (thats a lie) to fenderwells,
to hiring my great grandson at union wages to change the plugs out. But then he will want a tip on top of that.

I’ve thought about that for various tasks, but my grandkids only push buttons, except a couple of the boys 👍
Well I’m sure you will persevere, and whether it a crows foot wrench or a socket or Harry Potters wand you’ll find a way 👍

 

[azmusclecar]

I’ve thought about that for various tasks, but my grandkids only push buttons, except a couple of the boys 👍
Well I’m sure you will persevere, and whether it a crows foot wrench or a socket or Harry Potters wand you’ll find a way 👍

Well I have 6 shortys in. I had to quit. My language was getting atrocious. Words I never heard before were coming out of my mouth. My neighbor is coming over tomorrow, he's a pastor, maybe he can pray the last two in.