Malcolm, You must be using some very special spring, retainer and lash cap combination to get those rpm. Mine have always flown apart over 9000 unless using ultra light retainers and lash caps. Usually the problem is keeping the lash caps in the retainer, even when using springs giving 400 lb on the nose of the cam. Any more spring pressure than this and most oils go into shear burning the stellite rocker pads and cam lobes.
Another problem is cam timing scatter from chain whip at very high speeds. I have a fix for this now, although it still will not let me go over 9000 on my 1600 race engine. Feral Errol "I HAVE NEVER DRIVEN MY 510 WITH A 5 SPEED ONLY STOCK 510sss 4 SPEED. But i do have a 5 speed thats the same ratio as the 4 speed ,that will be going init,,where 5th is .86 overdrive. I allways found it good till over 8000-10000Rpm in 1,2,3 gears..I used a rev counter that goes up to 10 ,I found that once I got it to 10 and push it further the rev counter would shag around.. I never found it to lose torque but ,,the carbs and dizzy are also far from stock Just seamed to run out of gas in fourth gear.. Malcolm" --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
