SS vs "Stock" heads

Jim Hanig · 09-06-2012, 08:39 PM

Mark a good set of lt1 stock heads at 200 ss are9 cfm better 300 +6 400+17 500+35 never flowed the stockers any higher .your likey to lose 40 hp or more. But that my guess,no data to back it up. Jim Hanig

Jeff Lee · 09-07-2012, 12:21 AM

You haven't given the particulars of the SS head over the Stock head but shootin' from the hip, I'd sat .200-.300 range. That's assuming the Stock heads get the good valve springs for the SS cam and the Stock heads don't stall at .600" and you've got an .800" cam.

09-06-2012, 08:39 PM	#1
Jim Hanig Senior Member Join Date: Aug 2006 Location: Pukwana SD Posts: 860 Likes: 554 Liked 99 Times in 49 Posts	Re: SS vs "Stock" heads Mark a good set of lt1 stock heads at 200 ss are9 cfm better 300 +6 400+17 500+35 never flowed the stockers any higher .your likey to lose 40 hp or more. But that my guess,no data to back it up. Jim Hanig

09-07-2012, 12:21 AM	#2
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: SS vs "Stock" heads You haven't given the particulars of the SS head over the Stock head but shootin' from the hip, I'd sat .200-.300 range. That's assuming the Stock heads get the good valve springs for the SS cam and the Stock heads don't stall at .600" and you've got an .800" cam. __________________ Jeff Lee 7494 D/S '70 AMX

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