Author Topic: Thinking about getting bigger cam??  (Read 118543 times)

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Gnarly4X

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Re: Thinking about getting bigger cam??
« Reply #90 on: Aug 06, 2016, 09:30:37 PM »
Hi Snowtoy,

Just to tap dance with you a little more regarding your insistent belief, and earlier post, that my “real world” torque numbers will be higher if I change my ring & pinion gearing from my stock 4.10s to your suggested 4.56 ring & pinion…

....my belief, based upon my experience with 3 Toy trucks with 22RE/22R engines and my research over the years, is that the laws of physics, what is calculated on a chassis dyno, and the results – Time, RPM, Torque, and HP- will demonstrate that, in fact, my 4.10 gears and 31” tires will actually produce HIGHER torque numbers, not lower torque numbers.

If I’m wrong, can you please enlighten me with any laws of physics, mathematical formulas, automotive engineering, or dyno data?

Again, I am not an engine builder or any where near an automotive engineer, so I’m always in a mode to learn new stuff.

Regarding the lower torque numbers in specific RPM with the 261C vs the stock cam profile.... yes, the 261C is moving the torque numbers up in the RPM, and that is exactly why I like the profile.  However, as with most cam profile changes that move torque and HP numbers up or down the RPM range and output - there is typically a trade-off or sacrifice.

Thanks,

Gnarls. :spin:
1986 XtraCab SR5 22RE 5speed W56B, ~16,000 MI after break-in, DIM (Did It Myself) rebuilt engine - .020" over, engnbldr RV head, OS valves, 261C cam, DT Header. https://imgur.com/oACTHTR

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