Gain extra benefits by becoming a Supporting Member Click here find out how!
Silver
Gold ***Platinum***
Blu 67jim750 garyab (2)eldorado53 rysha64 Don H (6)bowtiefan (8)joda (7)Daves 57 Bel Air (7)Big T (10)buscobillwaddictKingy (2)David BurkeSuburbazine (3)king_alcohol (2)BJackdrdan 1963SBHD (5)bajones238 (5)
feffin (8)Thadd (13)bputhuff
MotorCity57 (11)
57Townsman210 (12)
supertug (3)
DrDirt (5)
Classic Performance Products Classic Parts
Ciadella InteriorsAmerican Auto Wire Ecklers AutoMotive
Awsome deals on tiresClassic Industries
Hellwig Products IncPerformance Rod & Custom
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy


Join the Community today







Username Post: Camshaft Identification        (Topic#178892)
ElevatorIdiot 
Forum Newbie
Posts: 36
ElevatorIdiot
Reg: 11-20-07
01-05-08 10:11 PM - Post#1336091    

Pulled camshaft today and have no idea what it is... I bought a new one but I am curious as to what was in the motor originally. All I can find on the cam is a CWC, CMC, 1539, 1.5, and MTCI. Anyone have any idea what this might be... Thanks

 

1955 Stuff on eBay
1956 Stuff on eBay
1957 Stuff on eBay

MikeB 
Senior Member
Posts: 9640
MikeB
Loc: Plano, TX
Reg: 08-28-03
01-06-08 09:25 AM - Post#1336293    
    In response to ElevatorIdiot

CMC may mean Camshaft Machine Company, but other than that I have no idea.

You can at least determine lift like this: Using calipers, measure across the smallest part of the lobe (width) and then subtract that measurement from the largest part (height). Then multiply the result times 1.5 to get lift at the valve.

For example, lobe width might be 1.100" and lobe height 1.380". So, 1.380 - 1.100 = .280 x 1.5 = .420" lift at valve.

BTW, on a small block cam, the front two lobes are exhaust, the next two are intake.

With the cam in the engine you can measure duration and lift using a dial indicator and degree wheel.


1982 C-10 SWB pickup -- Unmolested, original paint.
350 with Vortec heads & RamJet roller cam, along with TH350 replacing 250 six and 3-speed manual.
Sold my 55 sedan in 2014, after having owned it 11 years.


 

1955 Stuff on eBay
1956 Stuff on eBay
1957 Stuff on eBay

Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

1937 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.204 seconds.   Total Queries: 13   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 07:08 AM
Top