Help judge my modification
Help judge my modification Help me judge my modification. I installed a set of 1.85 rocker arms and 918 springs. Upon close inspection, the 1.85s were virtually identical to the stock arms. So, I figured that one way to tell if they were 1.85s would be to do a few track runs to see if mph improves.
I make a few runs and get 105 mph. Previously with stock arms, I ran 106. So, I bumped up the rev limiter and 2-3 shift point and see a 106. Interesting. In the past, when I tried to bump up the 2-3 shift, I would lose one mph. Now I am seeing a gain. Hmmm. Is this gain from the rocker arms or possibly from the new 918 springs??
I understand that many other factors such as weather & weight can severely affect the mph so I’m not to concerned with that. I’m more curious to see other peoples insight as to why I’d get a gain when I bumped up the shift point. Rocker arm or springs? Was I sold a set of stock rocker arms?
I make a few runs and get 105 mph. Previously with stock arms, I ran 106. So, I bumped up the rev limiter and 2-3 shift point and see a 106. Interesting. In the past, when I tried to bump up the 2-3 shift, I would lose one mph. Now I am seeing a gain. Hmmm. Is this gain from the rocker arms or possibly from the new 918 springs??
I understand that many other factors such as weather & weight can severely affect the mph so I’m not to concerned with that. I’m more curious to see other peoples insight as to why I’d get a gain when I bumped up the shift point. Rocker arm or springs? Was I sold a set of stock rocker arms?
Thanks for the reply. At least I have a little chance that the rockers are really 1.85s. It was so odd that previously my car could hook up well off the line, 1.9 60 ft, vs. lousy 2.2-2.4 60s this past weekend. I wonder if those 1.85s added more torque down low which affected traction?
