53 Mercury camshaft

[52merc]

ford

[fordscript]

Camshafts are an interesting topic. I have a cam that has 21A stamped in the end, but 5T cast on the shaft....and another that has 5T stamped on the end, and 21A cast on the shaft....what gives??

[52merc]

well ive got a standard everything what i thought was a 53merc engine with a 8cm cam in it

[big deuce]

It has been stated that the 1cm cam has 236* advertised duration, curious what it is a .050 lift?

[40 Deluxe]

Originally Posted by big deuce

It has been stated that the 1cm cam has 236* advertised duration, curious what it is a .050 lift?

Set up a degree wheel and go for it! That way you will be sure to have accurate, first-hand information for that specific camshaft.

[flatjack9]

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Around 208 deg. I also measured 240 deg at .020 lift.

[big deuce]

It would be easier if I had the cam in hand. Thanks flatjack for posting your info.

[scooder]

Originally Posted by jerry grayson

Can someone tell me what is the advantage of this over the 8ba? The engine in my Crestliner is a 3/4 grind of somesort and I don't like it. I have heard that the Mercury is better in some regard than the Ford. How do you identify a 53 Mercury camshaft?

Just out of interest, what do you not like about the cam in there now?
And do you actually know for certain it's got a 3/4 "of somesort"
I ask as if you don't know for certain what cam is in it, you could be swapping in the same cam! For instance, when you buy a car and chap says "it's got a 3/4 cam" kinda goes with "it ran great when I parked it", Were you just told that's what it had?

I'm not doubting your knowledge, I just don't want you doing unnecessary parts swapping.
Martin.

[flatjack9]

Originally Posted by jerry grayson

Can someone tell me what is the advantage of this over the 8ba? The engine in my Crestliner is a 3/4 grind of somesort and I don't like it. I have heard that the Mercury is better in some regard than the Ford. How do you identify a 53 Mercury camshaft?

The Merc cam has around .330 lift whereas the Ford is .300. The cam will have either 8CM or 1CM cast somewhere along the length of the cam.

[sidevalve8ba]

Originally Posted by Merc Cruzer

The EAB cam has been identified, what about the EAA Cam? This one came out of a 52-53" Merc Flathead engine?

I too have a cam that is marked EA A although it is marked slightly different than the one pictured in this quote. Is this the same as an EAB cam or what do I have???

[Bader]

I've got a cam marked c23,came out of an eab motor I stripped in az, anyone have any info?