Originally Posted by v8fbrx7
back from the dead...well for some reason beyond my knowledge, after this i reinstalled my 76cc heads and the car fired right up, i have no clue why it ran but it did lol. although about mid summer last year i ended up fouling out spark plugs really quick and did a leakdown test and found a crap load of compression loss and it coming out of the valve cover...so i guess the 307 was shot. now heres my dilemma. i've torn down the car to do other mods (ford 9 inch) and to redo somethings ive done cuz its not my daily anymore. I scored a cheap 283 off a local here which the ring gap isn't almost out of spec like the 307 was when i put it together. heres my question. should i attempt to put the 416 heads on the 283 because i don't wanna drop my CR even MORE than with the 307 with the 76cc heads lol. and would the cam and everything work well together? to review since its 6 pages back it would be now:
summit 1104 cam
performer rpm intake and a holley 600? what kinda numbers am i looking at with this setup?
the other option i was considering was a 3030 solid lift cam with the 76cc heads, according to DD it would make some nice numbers but i'd rather hear some knowledge thats been actually used instead of a program lol
I wouldn't run the 76cc heads, regardless of the cam- but an especially bad choice for the 30/30 cam.
The L30 Vortec 305 heads are a viable choice, IMO. All that I have seen and heard from those who have used them indicates they work well, and need no excess milling to get the chambers small enough to make the compression needed for a performance cam. Post 478
has more info and photos on the L30 heads. There are other threads about these heads on the forum, BTW.