I just bought the heads from mean maverick,and I want to update my cam while I'm in the mood... These are the spec's, Lunati Bracket Master II 284/284 duration with 488/488 lift and a 110% lobe seperation... This is what my motor has, The 1969 heads w/stock valve train,600cfm edl. carb,edl. performer intake,headers,tci c4 trans w/2500 stall.. for spark I'm gonna use a stock dizzy w/pertronic's conversion and a flame thrower coil... Opinions Please..........
What heads are you going to use ? You listed the ones you have now, but mentioned buying more heads . :16suspect
The heads I'm buying from David (mean maverick) they are stock 1969 heads w/58.2cc chambers 1.74 intake and 1.45 exhaust rail guided rocker arms.. All I can afford right now and the short block is all stock as well right down to the std bore... They have to be better than the 74 smog heads I have now....
Well if you've got bought C9TE's from David and you're 74 heads are D2OE's, you've bought the same heads you have now. All the 302 heads are listed with the same 58 cc chambers from 69 to 76 and are basically the same heads except for the casting numbers. And you'll need to make sure the cam you choose will not pull the stock pressed in studs out. Were I in your position, I'd look for a set of E7TE's and do a little port work on em, mill em .040" and top em off with a set of 1.7 pedestal rockers.
I started out using Comp Cam's on line program while my 351 C was being stroked to 393. It came up with a 32-246-4 / Extreme Energy 274 cam for my application. To be certain, I made 2 phone calls to Comp Cams to talk to actual people and both times they were very helpful but came up with the same selection each time. At first it seemed a little too much cam for my use and I was trying to go down a selection, towards the mild side, but Comp Cams kept telling me that, due to it being stroked, the original selection was what they would suggest. So that is what I purchased. We'll see
Anytime you increase displacement, it makes the cam you're going with seem smaller in actual use. A grind used to make power say from 3000-7000 in a 302 would behave like a smaller grind when used in a motor with more displacement.
68-69 were the same 70-early 74 had the same design mid 74-76 were the same, and 77-80 were the same (i have the numbers to help) as for E7's there are two different castings for them, one with with a 58cc chamber and one with a 61.5 chamber so the wrong one wouldnt do u much good
All E7's had 61 to 64 cc chambers. The only variation I've seen is those used on 351's that had larger head bolt holes. Milling them .040 will reduce the chambers by 7 ccs.
