How's your cam ??

Schnieder 254, 255 ci, alum flywheel. 355 lift, T-5 trans, 3:80 rear end
 

Attachments

  • 34FrenchFH.jpg
    34FrenchFH.jpg
    119.3 KB · Views: 139
  • 2009_speedweek_SO 239.jpg
    2009_speedweek_SO 239.jpg
    39.4 KB · Views: 59
How do you id a Merc or the EAB cam ? put together an 8ba for 48 just picked the cam with the most lift. i think it was .325 lift tks Laurie
 
JWL said:
From the description of the desired end result there is only one or two cams that can actually fit the requirement. First would be a stock cam and second would be the Tilden Tech 8CM Plus cam. Any of the others which have been mentioned in the responses here will take you in the opposite direction from your request.
Click to expand...

Hi JWL,
in your book you write about a cam being too small or too big.
What is the max displacement for a stock cam before it gets too small ?

I can`t see a EAC cam feeding a 304ci Flathead even at lower rpms...

Michael
 
When I wrote about a cam being too big or not big enough it was a reference to the desired RPM level at which the cam design operated most efficiently. Although there is some truth that a larger engine can run with a longer duration cam, it is basically true only because the added displacement helps overcome the poor performance at RPM below where the cam duration is suited for. It is not really a matter of properly "feeding" a given size engine, but rather, a matter of having a cam designed for top efficiency in the RPM range desired.
 
Teich said:
How do you id a Merc or the EAB cam ? put together an 8ba for 48 just picked the cam with the most lift. i think it was .325 lift tks Laurie
Click to expand...

The Merc cam should be marked 8cm or 1cm & the EAB will be marked EA and sometimes stamped E on the front.
 
Hello I have the 53 Mercury cam. I found a article on the net. Can not remember where. That said that Ford spent a lot of money and time to develop the late model mercury cam. In this article the author said that this can was probably the best all around cam. Does anny one remember or concur with this statement. I can't remember what years I think the 51,52,53 were included.
 
49-51 ford "B" cam
.305 lift
int. opens 5*btc - closes44*abc set.017
exh. opens 48*bbc -closes3*atc set.019
52-53 ford "E" EAB cam
.328 lift
int. opens 21*btc - closes68*abc set.017
exh. opens 56*bbc - closes11*atc set.019
49-50 merc "8CM" cam
.338 lift
int. opens 10*btc - closes50*abc set.014
exh. opens 50*bbc - closes10*atc set.016
51-53 merc "1CM" cam
.333 lift
int. opens 5*btc - closes51* abc set.017
exh. opens 47*bbc - closes9* atc set.019
 
L100 developed by the leitho bros way back now is being ground on the east coast beautifull exhaust note & plenty of grunt
 
Tom's36coupe said:
Crower 3/4 race cam from the old Motor City Flathead (mark kirby). If I were to do it again I would go more stock. My specs are: 383 lift, and 250 duration, very big cam, fun but at idle about 600 rpms the car sounds like its going to blow! I have Edelbrock heads, twin holley's , merc crank and about 260cubes....3.55 rear gear and 3 speed with 46 gears. Low end suffers until it gets going, then tons of fun and people tell me, What the hell is under the hood!!!:cool:
Click to expand...


Tom - where did you get your specs for your camshaft? I bought a 3/4 MCF cam from Mark back in 1994. At that time, the MCF cams specs were as follows: (According to the June 1994 issue of Street Rodder Magazine, pg 135)

Grind Type Intake Exhaust Lift Duration

3/4 29-72 72-29 .370 282 Degrees
7/8 29-72 72-29 .390 282 Degrees
Full Race 28-73 73-28 .420 282 Degrees


The reason I ask is that I ran this cam from 1994-1996 and for some reason
I cannot remember why I switched it out for a 260F Schenieder cam. I was measuring the lobes and there is a .015 difference between the exhaust and intake lobes. Mine is marked as being a 3/4 MCF. I dont have a dial indicator to mearure the life but I measured the lobe itself and subtracted the heel on the opposite side. I came up with .391 exhaust lift and .376 intake lift. Seems like a have an 13/16 cam??

Anyone have an idea?
 
In my 36 coupe I have a Potvin 3/8 super in my 59AB. Gross valve lift is .375,duration is 280 degree.Nice sound & lope .3.55 rear end gears.Couldn't be more pleased.
 

Attachments

  • 36 engine 1.jpg
    36 engine 1.jpg
    62.1 KB · Views: 75
deuce lover said:
In my 36 coupe I have a Potvin 3/8 super in my 59AB. Gross valve lift is .375,duration is 280 degree.Nice sound & lope .3.55 rear end gears.Couldn't be more pleased.
Click to expand...

The Potvin 3/8th is the cam I plan to use as well. Glad to hear you're liking it.

It was highly recommended by Bill Jenks (RIP) and the one he ran in his own cars.
 
Last edited:
Chuck Steevins
I'm not sure which Ron your referring to but I think the 77B is the modt useless cam on the market today. It's basically a stock cam for $200. Fore that kind of money you can get several better cams depending on application.
 
You must log in or register to reply here.
Back
Top