RD350 tach on 400

[triple1972]

Hi I am building a RD400 to run in USCRA Formula RD. Obviously I don't need a speedo but tach yes! Does an RD350 tach work just fine on a 400? New venture for me. I have a very nice 400 tach/speedo cluster but didn't want to use it on race bike when I have a working 350 tach. Thanks guys.

[m in sc]

yes. fyi yamaha and kawasaki use the same ratios on the speedometers and the tachs. 

[SUPERTUNE]

Daytona does not apply. But all the rest fine...
Chuck

[m in sc]

they are a different ratio?

[triple1972]

Thanks guys! Can always count on 2SW  for help!