hey i was wondering what the specs were on the old 30/30 duntov camshaft?

Brent

Here is what I have on it:

GM 3849346 ( 30-30 Duntov ).Chevys advertised duration is 346... lash .030.

.008 ____________ 440
.010 ____________ 418
.012 ____________ 396
.014 ____________ 375
.016 ____________ 354
.018 ____________ 331
.020 ____________ 314
.050 ____________ 254
.024" is the proper tappet lift to measure the seat to seat duration. It's not on the table. Further date points to the .024" duration being 304º.

Others should have more.

It's like 346/254, (but really like 314/254 when rated using modern ratings), 114/110, .486"/.486" minus anywhere from .026" to .030" for lash..

Pat has something with the way the old cams were actually rated by GM when you really look at them close...

pdq67

thanks guys