Guys Can anyone here read a Cam Card and translate it to caveman, I had my cam done and i cant make any sense of it. What are the important points etc.... Cheers

valve lift and the duration at .050" lift are the main things to look at. post up the info

will scan it when i get into work, just typed the lot and explorer crashed

Doh, I hate that

ok, the data is split into 2 halves, the top half is measured at 4 thou of valve lift, these are the 'advertised' figures, the bottom half is measured at 50 thou of valve lift, this is the more relevant figures to look at. you can see the peak cam lift figure of the intake side (0.29915"), that is then multiplied by the rocker ratio (1.65:1) to get the peak lift at the valve (0.49359) the top duration figure of 279.4 means that the intake valve is above .004" for 279.4 degrees of crank rotation the bottom duration figure 216.6 means the intake valve is above .050" lift for 216.6 degrees of crank rotation, the difference between these figures show how agressive the initial lobe lift is. The lift @ TDC is a very handy figure to degree the cam in with, after using a degree wheel to establish the true Top Dead Centre, rotate the crank around and stop at TDC and if the cam is perfectly dialed in you should have 65.4 tho (0.0654") of lift on the No. 1 intake The open and close figures are exactly what it says, at 33.56 degrees Before Top Dead Centre the intake has lifted 0.004" etc etc. they are an old school way of looking at cam figures. The lash figure is 0.0000" this tells us that the cam is a hydraulic cam and has no valve lash (clearance between the rocker and the valve). if it said for eg. 0.006" it would be a solid cam and requires solid lifters and adjustable rockers to allow setting of this clearance. cams that have a 0.050" duration of up to 215 - 220 degrees are fairly mild, 220 - 240 is starting to get more serious like a low RPM race engine or hot street, 240 - 260 is really for race only, more than this is aimed at high RPM use only and will be a pig on the street with very low vacuum and poor low RPM performance I hope this helps. let me know if you want more specific answers, Cheers Brent

Brent, Would you mind deciphering the below details; MODEL TYPE 253-308 V/8 CROW COMPUTER CARD PART NUMBER 5730 Date 25-JAN-06 Cam type: Hydraulic type Profile MIN LIFTER DIA.802 Advance Ground on Cam: 1 Lobe separation: 112 .050 VALVE TIMING Inlet opens:7 BTDC Closes:49 ABDC.050 Duration:236 Exhaust Opens:55BBDC Closes:9ATDC.050 Duration:244 ADVERTISED VALVE TIMING Inlet opens:31BTDC Closes:73ABDC ADV Duration:284 Exhaust Opens:79 BBDC Closes:33 ATDC ADV Duration: 292 Inlet lobe lift at TDC on the over lap:.087 Valve lift Inlet: .5623 Inlet Rocker Ratio: 1.65 Valve lift Exhaust: .5625 Exhaust Rocker Ratio: 1.65

236/244 is a fairly agressive cam for the street us need about a 3500-4000 converter if it was an auto.... Nice cam

Cheers Brent, helps to get a better understanding!

Thanks boosted wagon, only have a small stally in it (manual shift T350), but it goes good!