Posted By: mopar dave
duration spread whats needed? - 12/30/09 02:31 PM
when picking a new cam how does a guy know how much duration spread to grind in a cam? what determines it, head flow, compression, rpm, CI?
Ryan spec'ed a cam for my indy headed 408 and it has a 4* spread. bullet also recommended a 4* spread. i talked to a guy from another forum last night and he's going real fast (8's)with a w8 motor. he tells me the guys in his crowd run a 11* or 12* spread to make big power. Uratchko does this guys heads and seems to be on board with the 12* spread. brett millers 395 had an 11* spread. so what determines the spread needed?
Ryan spec'ed a cam for my indy headed 408 and it has a 4* spread. bullet also recommended a 4* spread. i talked to a guy from another forum last night and he's going real fast (8's)with a w8 motor. he tells me the guys in his crowd run a 11* or 12* spread to make big power. Uratchko does this guys heads and seems to be on board with the 12* spread. brett millers 395 had an 11* spread. so what determines the spread needed?