What is "standard" cam base circle dimension, vs. "small" base circle? (roller!)
Hi guys, I have a custom roller cam that I bought on this board a little while ago, that is 0.495/0.530" lift, 220/230, 114 LSA, roller. It looks like a small base circle cam that was ground for a 383 (the guy listed it for 383 application when I bought it). The base circles on the intake and exhaust lobes measured slightly differently- 1.15 vs. around 1.175. Is this really a "small" base circle?
I grabbed a stock LT1 roller cam to measure, and the base circle measured around 1.25", for comparison. Keep in mind I am just using a digital caliper to get as close to measuring base circle as I can.
Will I have to get custom pushrods for this 0.10" difference in base circle from stock, or is that a small enough difference that it won't mess up my valve train geometry bad enough to worry about it? Can anyone tell me what the STOCK L98 pushrod length is? I'll look-see if Summit sells a +0.100 pushrod just for fun.
2011 Infiniti M37x, 2004 F250 V10 4x4, 2000 BMW M5, 1999 C1500 5.7, 1994 Town Car, 1976 Postal Jeep DJ5