HOW MUCH COMPRESSION FOR ANDREWS TW37 CAMS ?

[JYHD1]

I know this has been discussed before but could someone be kind enough to refresh my memory on what would be
the best ccp for a 95" using Andrews tw37s.

[Mike52]

9.8cr

Mike

[TXChop]

9.5 in really hot climates. 9.8 in northeast type of climates. 10.2 woke it up for sure but all was lost with pinging and detuning.

[JYHD1]

Is that the corrected CR factoring all the variables ?

[maineultraclassic]

9.5 in really hot climates. 9.8 in northeast type of climates.

Yup...........I agree.

Steve

[mayor]

I like the general rule of thumb of 9:1 corrected compression regardless of cam (especially at sea level).  The corrected compression factors in the cam's intake close, although many at higher elevations use ccp as a guide (185#).  I'm running slightly less than 9:1 corrected in my TW37 build.  I'm about 9.6:1 static (8.9:1 corrected), and so far no major issues with compression (in the Northeast with elevations ranging from sea level to 4k).