I will tread lightly. I am used to engines that flow good air and make power from 2000-6500+, and still idle at 800 after I get the EFI tuned. I know what I read about a particular flatty combo is often written in the context of a 32 coupe.

 

Soon as the wether breaks you need to finf a flatpowered sedan and go for a ride in it , Maybe you should ask them first

 

lol, I like that idea.

 

my 52 customline has an 53 8rt truck motor in it , and from off idle to about 3-3500 it pulls hard enough to give most modern cars something to worry about . it's just under carbed . the 8rt cam is made for low rpm pulling grunt , and i just don't think a big lumpy cam is gonna work in a big ol' truck or sedan . they work well in smaller lighter coupes etc . . the 8cm cam is supposed to be the best cam ford offered for street performance , it idles decently , and makes more power and torque in the low and midrange where you want it in a big vehicle . the flathead performance site y'all have mentioned is the tilden technologies site i suggested as it is full of info on the flathead cams , and his theories kind of fly in the face of conventional thought of bigger is better . he suggests cams with minimal overlap , not more than 220 degrees of duration at .050 , and high major and minor intensity numbers of which the 8cm excels in , and he suggests that getting as much lift as you can on a cam which the 8cm does admirably in . he also gives links to harvey cranes personal site on which he expounds further on his own personal theories and goes even further into csm design etc. and he seems to agree with mr. young's theories about street and race cams . it is a bit of a challenge to grasp the info in both tildens and cranes sites but once you do you will begin to see the light for flathead cams especially for the street , and realize that the aftermarket cams tend to be lazy ( slow opening and closing rates on the lobe designs ) , i.e low intensity numbers , and most do not offer the lift of the 8cm . i am still hopeful of hearing one day that the tildem 8cm plus cam designed by mr. young will be ground by mr. stipe of specialty cams , as it is a duplicate of the 8cm with more lift , from .338 oe too .350 offering a major improvement in performance . none of the cam grinders now have a blank like the 8cm to grind a duplicate of one . all of theirs are of a dual pattern design where as the 8cm id a symmetrical lobe design , hence why i am still searching for a suitable cam as i don't want too use my good 8cm as of now , and as i mentioned the other was reground with .364 lift , way too much for my oe heads .

 

Mr. 350
Do you have the numbers on the Truck cam - I've herd many time of the Truck Cam but no numbers - Also herd of a different cam for the EAB and 1CM
Some folks expound on the differences others say they are minor
Just looking for info to add to my Flatmotor Lore file.

 

yeah dick i got them written down somewhere . i'll look when i have a minute or two and post them . it was pretty much the same as the 8ba cam but with less lift if i 'member rightly ........... and find the right notebook of a multitude , that i scribbled 'em down in .........

 

I would be interested in those numbers too, as who knows what I will run aross in my first flatblock purchasing adventure. I did a lot of reading on Mr Tilden's site. Educational for sure. I look forward to reading info from more of the cam wizards of the day.

OT, but it is a small world. Mister 350 mentions his 52 has a 53 truck engine, and I have a 53 Truck with a missing flatty. Ironically enough, my truck originally came from Springfield, IL. I can't help but wonder if he's got a receipt Dick?

 

Flattie are a man's best friend - I have two trucks and five flatmotors (Counting the 6's)

 

BTW -- the Flathead Forum has been saved, for the moment, and will continue under new management. Ford Flathead V8 .. 1932 thru 1953 • View forum - Q & A General Discussions

 

no receipt fatfenders .... heee heeee the 52 i am the second owner of it as it was purchased by the original owner and he bought a 53 truck a year later . the 52's eab flatty started smoking in 62 and the 53 was rotted out but ran good so .... he also repainted it saige green from the oe shannon green at this time . i got it from his great granddaughter and it was still in his name ( he was deceased ) . i still got the oe flatty for iron sides in pieces except for the heads which were cleaned and milled to go on the 8ba out of my truck along with some other bit's and pieces and new stuff when i get rich .............

 

the drama continues. my older engine that i got rebuilt in 1977 had the merc crank in it, the guy who built it put it in. it had 8BA heads. i just checked the cam that was in that engine and it's a 1CM, which i guess is a merc and a relative of the desirable 8CM? my current engine was a EAB that appears to have been rebuilt at least once (rods are numbered). we are going to put the merc crank in that one with the EAB heads. next time i'm at my friend/builder's garage, i'll see what cam was in the EAB. i'm guessing the 1CM might be more desirable than a cam in the EAB if that in fact has its orig cam? i guess we'll have to watch for clearance with the valves and the EAB heads. i'm assuming any used cam needs to be checked and poss reground. all good things to think about during the northeast winter. dick r.

**** just found this on HAMB******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

that smaller lift on the 1cm might help with valve clearance issues.

 

The huge differences in the EAB listed are suspicious. Especially since the EAB engine really wasn't rated any higher (maybe 5 HP? and likely that was an advertising ploy)

Are you using adjustables, Dick R?

 

we are def going to use adj lifters. prob the kind with the little adj wrench. do you recommend a certain brand'/type of lifter?? my friend/builder just reminded me he knows the bad boys from "Rolling Bones Hotrod Shop" and he'll consult with them on what to use for a street truck (i like the low end torgue more than the HP at high RPM). check out the rolling bones web site. RB hot rod is about 25 miles from me and about 5 miles from where we are builiidng the flatmotor.
Rolling Bones Hot Rod Shop

 

A bunch of us have lunch with the Bones here in Erie when they are on there way to Bonneville and they do drive there and back in those cars they race
Go visit the Bones they will give you all the information you want to know.