The Dodge Challenger Message Board

can anyone tell me anything about these heads from the number which is stamped on them the number is 4323345
many thanks.

Is it stamped on or cast on? Where exactly is it? The best number to ID the head is on the intake runner under the valve cover.

the heads are not on the car,they have no valve cover on, this number is cast on the intake runner

I couldn't see that number among my list of 'normal' big or small block heads. Help me narrow this down. Is it an iron LA engine head? Has it a cast date? Any idea at all how old it is?

yeah there iron there off a 360 i think around 1985

V-8 Flat Tappets
YEAR: 1985-89
C.I.D:318
LITRE: 5.2
BORE: 3.91

I got these facts from:

http://www.butlers-a1.com/dodge.htm

(All i did was to search for '4323345' on Alta Vista)

Clever clogs!

That is why I don't have a listing for them in my stuff. They are too new!

I need some new stainless hold bown bolts for my new big block MP alloy valve covers, anyone know what size I need?

Quarter inch coarse thread. Inch long if you use a washer as well.

Wow! that sounds positive!
Thanks Dave, I am trying to get to Avon park this weekend....

I will wait until you have ordered them and then I will check that I was correct.

1/4-20 National Coarse thread 3/4" long is correct for the stock steel valve covers. The additional thickness of the alloy covers would make that a bit short for them, so Dave might be correct on the 1" length.

I am sure I am Jack. I forgot to check of course.

Those cast rockers along with a thick rubber gasket and a washer take up a half inch or more themselves. I used stock length at first and stripped two threads because they did not go in far enough. Hex drive heads are best for these.

I meant no offense - I have no experience as yet with the cast aluminum covers. However, the new ones for the R/T SE are in the garage waiting for their turn to be bolted on, so I will be getting that first-hand once my problem with the wrong sized bushing is behind me.

Non taken Jack! I was in too much of a hurry to explain correctly.

You don't have to be PC around me you know!

Ordered them today, should have them tomorrow.
I am still waiting on the pushrods though.

Here is what you need!



And here are the tools to get them in! Note socket welded to allen wrench.