











poll: meanest sounding cam
MS4 239/242 @ .050 .649''/.609'' 111 LSA 18.5 degree overlap
Futral F15 236/239 @ .050 .600''/611'' 111 LSA 15.5 degree overlap
MS3 237/242 @ .050 .603''/609'' 112 LSA 15.5 degree overlap
G5X4 ? ? ? ?
Overlap determines the idle chop. higher the number , rougher the idle .
Also as mentionned previously as well, the type of exhaust does affect the note as well (chambered, spiral, catback, duals, straight thru etc.....)
The Best V8 Stories One Small Block at Time
2. Divide that number by four
3. Subtract the lobe seperation {LSA} {LCA} of the camshaft from that number
4. Multiply that number by two
5. Overlap
Int 237 + Exh 242 = 479 / 4 = 119.75 - 112 Lsa = 7.75 * 2 = 15.5 overlap
2. Divide that number by four
3. Subtract the lobe seperation {LSA} {LCA} of the camshaft from that number
4. Multiply that number by two
5. Overlap
Int 237 + Exh 242 = 479 / 4 = 119.75 - 112 Lsa = 7.75 * 2 = 15.5 overlap


but I have the Rex in my car and it pulls hard as hell
