Drooze & Teuton

Jeff Lee · 06-13-2010, 01:43 PM

Well...we just had this issue about rocker ratio's thoroughly discussed here.
And I still do not know what, f any, tolerance NHRA will allow. Does anyody? Is a 1.65 RR in the tolerance zone if 1.60 is in the books? Are these Hemi rockers somehow marked as delivered (like a crane rocker for example) or is it up to the racer to determine the actual ratio? And was 1 or all 16 out of spec?
Are modern Hemi's more exact in the RR or are they like engines of yesterday, all over the board and you must sort through 100 to get the 16 you need?
And I would bet my last dollar Teuton had the correct cam lift as measured at the valve.

06-13-2010, 01:43 PM	#11
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Drooze & Teuton Well...we just had this issue about rocker ratio's thoroughly discussed here. And I still do not know what, f any, tolerance NHRA will allow. Does anyody? Is a 1.65 RR in the tolerance zone if 1.60 is in the books? Are these Hemi rockers somehow marked as delivered (like a crane rocker for example) or is it up to the racer to determine the actual ratio? And was 1 or all 16 out of spec? Are modern Hemi's more exact in the RR or are they like engines of yesterday, all over the board and you must sort through 100 to get the 16 you need? And I would bet my last dollar Teuton had the correct cam lift as measured at the valve. __________________ Jeff Lee 7494 D/S '70 AMX