I'm looking at Pro Toplines iron 320cc BBC heads and wondered which stud girdles fit them, do they share valve/stud angles with stock Chevy heads? None of the stud girdle makers seem to list Toplines.
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I'm looking at Pro Toplines iron 320cc BBC heads and wondered which stud girdles fit them, do they share valve/stud angles with stock Chevy heads? None of the stud girdle makers seem to list Toplines.
JCR ,
I am running the 320 aluminium heads , everything fits same as stock BBC.
Only thing is Pushrod lenghts(needed longer ones and the exhaust studs stick up higher because of the .600 raised ports and hit my valve covers ( the locking nuts actually do with stud girdle usage) had to double up on the VC gaskets to clear them, other than that should be no problem swap..
Good Luck
ps I am running the Crane Gold split type girdle
Thanks Liberator, thats helpful. I did see that they use +.250 intake and +.100 exhaust valves, so I knew the stock rods wouldn't fly. I'm exploring options for next winters head swap, have LS-6 closed chamber rectangles now.
JCR,
I like mine alot and they do have some pretty hefty flow #'s out of the box @.800 I got 398cfm on Int. and I want to say close to 300 on the Ex...we made several tests on the Flowbench set up but no Mods. to the heads, this was the first try out of the box #
ps: ck rod length before you buy them with all related components, to make mine right we used .400 long instead of the .250 :hammer2: