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Message: <blockquote data-quote="Higgins56" data-source="post: 350161" data-attributes="member: 766">Symptoms: Jumpy ride at low revs ( less than 1500 rpm)Engine is tuned to give ca 600-650 hp and the cam is a Mechanical roller Comp Cams Ex. Energy 242/248@0.050"Toploader 4 sp. has wide ratio: 1st: 2.78, 2nd 1.93, 3rd 1.36 and 4th 1.00Rear end is 1:3.55Tires are Nitto 275/60 with 15 " wheelsQuestion: is it possible to have good off the line acceleration and decent motorway revs with this set up with minor changes...Currently the problem is that low speed driving is jumpy as the car won't drive nicely with low revs in the city / parking place.Is this problem caused by the cam or the rear end ratio or both ?The 1:3.55 rear end is a compromise to give decent motorway revs and lower decibels....also the Toploader was close ratio before but changed to wide ratio to give a shorter 1st gear.</blockquote>

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