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how much hp can a 700r4 handle?

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  • how much hp can a 700r4 handle?

    i have a shift kit and a stock rebuild in mine. j/w how much power they can handle. and what does it take to make them handle more?
    89 K2500 w/ 383. TBI 383 w/ all the goodies. Dick Cepek 305/70s, 3" BL, 4.10s, EBL tuned by ME. Magnaflow exhaust....5" tips.

  • #2
    Re: how much hp can a 700r4 handle?

    Hey stroker,

    A stock 700r4 wont hold up to too much grunt, but they CAN be built. As a matter of fact, I just pulled mine out of my truck yesterday to be sent to my trans guy who does all the transmissions for mine and my friend's hotrod's around here. There's a car I helped build that runs around with with a 436 small block that makes 608 hp at the flywheel and 590 ft lbs of torque, and he's running a 700r4 with coan convertor and such. Another with a 480 hp 383 stroker with a 700r4. Planetaries are usually the first to go, and the 3rd gear clutches, but Raybestos makes a great clutch pack for these transmissions that seems to hold up nicely. How much horsepower/torque are you making? I'll beable to help you a little bit more with some more info.



    -JP-

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    • #3
      Re: how much hp can a 700r4 handle?

      i'd say somewhere between 300-350 FWHP, based only on prior experiences. but with a mild rebuild, shift kit, servo, id say 400

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      • #4
        Re: how much hp can a 700r4 handle?

        some people guarantee over 500hp on their 700r's

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        • #5
          Re: how much hp can a 700r4 handle?

          On a stock 700R4, about 300-350fwhp. However, with some harden shafts, good set of planetaries and clutches/bands; it could easily handle 500hp.

          1990 Chevrolet C1500 Sport
          *The Hot Rod
          2011 Chevrolet Silverado 6.2L
          *Airaid MIT, Custom 2.5" true dual exhaust, 2/4 lowering kit, HIDs 4300k, HP Tuners
          2012 Chevrolet Tahoe 5.3L
          *Airaid CAI, HIDs 4300k, HP Tuners...soon to be lowered

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          • #6
            Re: how much hp can a 700r4 handle?

            You also have to consider the wieght of the truck. It may live fine in a car but put the same engine and trans in a heavy truck and it may not last.
            88 gmc- 13.82@101 mph

            91 chevy silverado

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            • #7
              Re: how much hp can a 700r4 handle?

              right now i'm lookin at prolly 300 or so hp and well over 425 torque, but in the future there will a s/c on here, so i'm just thinking to the future.
              89 K2500 w/ 383. TBI 383 w/ all the goodies. Dick Cepek 305/70s, 3" BL, 4.10s, EBL tuned by ME. Magnaflow exhaust....5" tips.

              Comment


              • #8
                Re: how much hp can a 700r4 handle?

                The stock hp rating is 300 hp and 370 lb/ft of torque. there are different ways of rating transmissions.

                For ablower on that 383 I would be looking at a 4l80e or 4l85e transmission swap. If you dont want to get the trans controller for the 80 or 85e, just get a full manual shfit kit for it and use a manual lockup switch.
                Parish was running in the 10's with a stock 4l80e with a shift kit.

                peace
                pauly
                97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

                Comment


                • #9
                  Re: how much hp can a 700r4 handle?

                  Originally posted by Pauly
                  The stock hp rating is 300 hp and 370 lb/ft of torque. there are different ways of rating transmissions.

                  For ablower on that 383 I would be looking at a 4l80e or 4l85e transmission swap. If you dont want to get the trans controller for the 80 or 85e, just get a full manual shfit kit for it and use a manual lockup switch.
                  Parish was running in the 10's with a stock 4l80e with a shift kit.

                  peace
                  pauly
                  Parish also had a cryo. input or output shaft if I remember correctly.

                  1990 Chevrolet C1500 Sport
                  *The Hot Rod
                  2011 Chevrolet Silverado 6.2L
                  *Airaid MIT, Custom 2.5" true dual exhaust, 2/4 lowering kit, HIDs 4300k, HP Tuners
                  2012 Chevrolet Tahoe 5.3L
                  *Airaid CAI, HIDs 4300k, HP Tuners...soon to be lowered

                  Comment


                  • #10
                    Re: how much hp can a 700r4 handle?

                    Originally posted by YenkoST
                    Parish also had a cryo. input or output shaft if I remember correctly.
                    Originally he was only running a stock 80e with a shift kit, he was running top 10's then. After he broke that trans, he went with a full level 5 build with a cryo shaft and then he ran bottom tens as his setup improved.

                    700 or 800 hp thru an 80e with a shift kit is pretty decent.
                    he has dynoed over 1000hp and 1100 lb/ft of torque at 22 psi, but he raced on 18 psi of boost and ran a 10.0?? at 137mph, not 100% sure on the mph. He backs off teh boost a bit when racing. He tried to run a 9 at Dragweek according to the magazine. I wonder what he will run with his twin turbo setup??
                    his 4wd launches are just wild, its all overthe place. That truck is the ultimate sleeper. You wouldnt think low tens from looking at it thats for sure. i'm envious.


                    Hey YENKO, here is Parish's truck site, lotsa great info here. http://www.neufamily.org/truck.html Take care man.
                    peace
                    pauly
                    97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

                    Comment


                    • #11
                      Re: how much hp can a 700r4 handle?

                      Originally posted by Pauly
                      Originally he was only running a stock 80e with a shift kit, he was running top 10's then. After he broke that trans, he went with a full level 5 build with a cryo shaft and then he ran bottom tens as his setup improved.

                      700 or 800 hp thru an 80e with a shift kit is pretty decent.
                      he has dynoed over 1000hp and 1100 lb/ft of torque at 22 psi, but he raced on 18 psi of boost and ran a 10.0?? at 137mph, not 100% sure on the mph. He backs off teh boost a bit when racing. He tried to run a 9 at Dragweek according to the magazine. I wonder what he will run with his twin turbo setup??
                      his 4wd launches are just wild, its all overthe place. That truck is the ultimate sleeper. You wouldnt think low tens from looking at it thats for sure. i'm envious.


                      Hey YENKO, here is Parish's truck site, lotsa great info here. http://www.neufamily.org/truck.html Take care man.
                      peace
                      pauly
                      Yea, it was 10.08 at 136. I don't know, he was talking about tubbing it and converting it to 2wd, twin turbo, or just making it a high 10's and getting a colorado with a 408 so, who knows. But I hope he does go for the 9's though. Take it easy Pauly.

                      1990 Chevrolet C1500 Sport
                      *The Hot Rod
                      2011 Chevrolet Silverado 6.2L
                      *Airaid MIT, Custom 2.5" true dual exhaust, 2/4 lowering kit, HIDs 4300k, HP Tuners
                      2012 Chevrolet Tahoe 5.3L
                      *Airaid CAI, HIDs 4300k, HP Tuners...soon to be lowered

                      Comment

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