haubstr Posted September 8, 2008 Report Share Posted September 8, 2008 Is is worth swapping cams from an L20B smog head to an open chamber non-ported A87... The engine is a low compression L20B bored 40 over built for a turbo that will be running about 5 PSI. Will be running a 32/36 Weber (maybe) as well. Have everything about done except for the cam. Any ideas? Thanks Quote Link to comment
Phlebmaster Posted September 8, 2008 Report Share Posted September 8, 2008 What is the A87 off of? If it was an L20B then you will be getting the same cam. If the A87 was off of an L-16 then it would be a good idea. Quote Link to comment
haubstr Posted September 9, 2008 Author Report Share Posted September 9, 2008 How can you tell which one it came off of? The head was off of the motor when we got it. Quote Link to comment
datzenmike Posted September 9, 2008 Report Share Posted September 9, 2008 Get a caliper and measure a cam lobe from the highest point to the lowest on the back side. You should be able to turn the cam over so it's not on a lifter, say 9 or 3 o'clock and measure across it. An L20B will be 1.518" +- a thou or two. If you do swap, swap everything, rockers, and lash pads to preserve geometry. Quote Link to comment
DISLEXICDIME Posted September 9, 2008 Report Share Posted September 9, 2008 the l16 cam has less lift and duration inless it is a sss head. a a87 is not a sss head. now a stock l20b cam is the same as a sss cam Quote Link to comment
datzenmike Posted September 9, 2008 Report Share Posted September 9, 2008 the l16 cam has less lift and duration inless it is a sss head. a a87 is not a sss head. now a stock l20b cam is the same as a sss cam Not saying no. Just that I heard the lift was 0.418", the L20B is 0.413" Who would feel that? Quote Link to comment
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