largest duration/lsa on milled 62cc 243 w/o flycutting?
08-16-2005, 05:23 PM
#1
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largest duration/lsa on milled 62cc 243 w/o flycutting? Hello everyone, I recently came across a set of milled/ported 243's and have been contemplating what the largest guesstimate cam I could install without flycutting the pistons.
The owner of the heads has a 228/230 114lsa cam to go along as a package, but I guess you can't help but wonder if you should go bigger?
Thanks in advance
BTW:the car is an 02' ZO6 with LG LT's, GHL Magnum, Vararam 160 thermo, Spec stg3 clutch/flywheel and a hardened output shaft.....
Alan
The owner of the heads has a 228/230 114lsa cam to go along as a package, but I guess you can't help but wonder if you should go bigger?
Thanks in advance
BTW:the car is an 02' ZO6 with LG LT's, GHL Magnum, Vararam 160 thermo, Spec stg3 clutch/flywheel and a hardened output shaft.....
Alan
08-16-2005, 08:24 PM
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duration is how long valve stays open, lift would be what u r worried about. has the heads been mill'd? and what eng. displacement is it going on. how thick is the head gasket ? just somthing u should check on before swapping cam.
fuerzaws6
fuerzaws6
08-17-2005, 04:01 PM
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The cam/heads will be going on a stock 346. The heads have been milled to create a 62cc chamber with stock valve in place...The cam has a 588/591 lift and the previous owner stated that flycutting was not neccessary.
I'm just trying to go with a little larger cam and not flycut......
I appreciate all the help guys
I'm just trying to go with a little larger cam and not flycut......
I appreciate all the help guys
08-17-2005, 04:29 PM
#6
Originally Posted by cowboysfan
duration is how long valve stays open, lift would be what u r worried about. has the heads been mill'd? and what eng. displacement is it going on. how thick is the head gasket ? just somthing u should check on before swapping cam.
fuerzaws6
fuerzaws6
Your totally wrong. Lift has VERY little effect on PV clearence.
Please click here and read away. https://ls1tech.com/forums/generation-iii-internal-engine/363688-comp-lsk-lobes.html
08-17-2005, 04:30 PM
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better to be safe than sorry correct ? You'll have the heads off anyways and it only takes about 10 mins or so per piston. goto installuniversity.com they have a write up
