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Hemi/Vette new rear end.

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  • #16
    Update: Now have the TREMEC 5 spd installed. Great product, I like the close ratio 4 speeds and then the 5th overdrive. I found a problem with the throttle linkage. I've rebuilt the Carter AFB's and fussed with the accelerator pumps but for some reason I never checked for full throttle. Well the other day I did the old broom trick on the gas pedal and wow, now I have real dual 4 barrels. Will put it back on the dyno next month just out of curiosity. I betting another 20 HP.
    silver_bullet likes this.

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    • #17
      Update: The hi-torque starter is sweet. Really turns this old Hemi over with ease. The front coil springs in the car were in fact the heavy springs for the Vette big block so the shop just heated them a little to give me the 1" drop. The TREMEC is a sweet heart. Close ratio 1-4 and 5th gear that gives me 70 mph at 2000 rpm. This old Hemi with 430 ft/lbs of torque at 2500 rpm loves it.

      Once I got her home I found out, with my broom on the gas pedal trick, that I wasn't getting full throttle. I messed with that and now she really pulls, guessing 20 more HP. That means I may keep the 3:73 rear in the box for awhile

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      • #18
        Originally posted by kolsen911 View Post
        The front coil springs in the car were in fact the heavy springs for the Vette big block so the shop just heated them a little to give me the 1" drop.


        that is an ABSOLUTE no-no...... so unsafe.
        hope youre never driving next to me, dont
        wanna be there when the coils fail.

        what shop did that? report em to the BBB for
        unsafe practices.

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        • #19
          or contact SuperBuickGuy for advice....
          Patrick & Tammy
          - Long Haulin' 2008, 2009, 2010, 2011, 2012, 2014...Addicting isn't it...??

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          • #20
            its old school, hurts handling a little, but if the shop did it without burning that glass car to the ground, they seem to have known what they were doing.

            Sounds like the same trans and rear end combo we will be running. This Covid stopped cash flow enough to decide on replacing quarters and fixing all the gaps, removing a ton of bondo, hopefully we get to ride in it before the weather turns.

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            • #21
              Apparently the guy in the shop has been doing this heating the coil for near 20 years. I've so far driven the car on a lot of twisties and some highway time as well a over the mountains to the coast yesterday with no issues I could feel.

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              • #22
                Some guys cut coils with a torch, others use cut off wheels and yet others never let the spring get hot.. I have heard of a weld splatter ball rolling off a leaf made it crack.. But for me, I have bent leaves 90*, yet others break.. I think you will be fine with what you do..
                STINEY likes this.

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                • #23
                  Still have the 3.73 rear in a box. As I found the carb linkage wasn't letting me get full throttle I'm working on that before I decide if I really need it.

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