Hemi Swap 1yr Plan
#321
Join Date: Jan 2011
Location: Sandy, UT. (SLC Suburbs)
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Welp, I'm officially doing a gear swap soon. I ordered the gears and install kit this weekend and will have it all by Wednesday or Thursday, might be able to drop the truck off somewhere on Friday and have new gears in by next week if everything goes as planned!
I went with 4.10s, I was seriously considering 4.56s, but with the recent news of me moving to middle of butt@#$! Missouri, I figured I don't want to be revving so high at freeway speeds, since my highway driving percentage will skyrocket.
Oh, by the way. I was able to GPS verify a speed run. at 125mph the truck shifts in to 5th and will not climb any further. This gear change may help that, being at a lower speed when it shifts into 5th will lower the drag and perhaps give that hemi the freedom it needs to climb to a higher RPM to make power again, and perhaps let me top out 5th gear, or at least get to the 140 limiter!
I went with 4.10s, I was seriously considering 4.56s, but with the recent news of me moving to middle of butt@#$! Missouri, I figured I don't want to be revving so high at freeway speeds, since my highway driving percentage will skyrocket.
Oh, by the way. I was able to GPS verify a speed run. at 125mph the truck shifts in to 5th and will not climb any further. This gear change may help that, being at a lower speed when it shifts into 5th will lower the drag and perhaps give that hemi the freedom it needs to climb to a higher RPM to make power again, and perhaps let me top out 5th gear, or at least get to the 140 limiter!
#324
Join Date: Jan 2011
Location: Sandy, UT. (SLC Suburbs)
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Bingo, 4.10s are in! I am supposed to take 'er easy for the next few miles. It's hard to do that lol. But I will. Already i can tell a bigg difference in how the truck behaves, it moved quickly through the gears now and seems to have a lot more tug while doing it. I'll be able to do some other tests in a couple 100 miles.
#329
#330
Join Date: Jan 2011
Location: Sandy, UT. (SLC Suburbs)
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As far a mild build, the "sidewinder" cam seems to be a popular one, as it gives a lot of low end grunt over the stock cam, and won't be hard to have tuned, that or the comp 260. Most other cams shift the power band upward were it helps with racing.
Blowing the 4.7 will be hard, you might go through lots of other parts before the 4.7 dies. Unless it mysteriously over heats, and drops a valve seat.. But you didn't hear that from me.