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11.5:1 comp ratio 327 with a t-5 behind it. how long will the t-5 last?

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Old Mar 17, 2001 | 03:36 PM
  #1  
spitfire350's Avatar
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From: Arlington, TX,, USA
11.5:1 comp ratio 327 with a t-5 behind it. how long will the t-5 last?

that motor makes like 430 horses and i was just wondering how long it would handle that power.
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Old Mar 17, 2001 | 05:07 PM
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ede's Avatar
ede
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From: Jackson County
from now untill long after you sell the car, or it might go south on the first launch.

------------------
ICON Motorsports

1st & 3rd
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Old Mar 17, 2001 | 07:54 PM
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
it depends on how you drive it. If you abuse it with 5000 rpm clutch drops and power shifts, then my guess is about a week. If you dont power shift and are somewhat polite on your launches you should get at least a couple years out of it before it goes (assuming its in good condition now). Ive had my BW t-5 behind my 350 for over a year now and its just starting to show signs of fatigue, but its probably got a ways to go before it completely goes out. *sigh* i guess its time for a t-56

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My 1986 Z28 and more!!
85 IROC w/ 1364 miles!

R.I.P Dale Earnhardt
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Old Aug 30, 2011 | 10:20 AM
  #4  
topless87's Avatar
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From: Independence, Kansas
Car: 1987 IROC-Z Convertable
Engine: 305 TPI
Transmission: 5 Speed BW T-5
Axle/Gears: 3.08 Posi
Re: 11.5:1 comp ratio 327 with a t-5 behind it. how long will the t-5 last?

I had a T-5 behind my 510HP/485ft lb 355 and I can tell ya, 3rd gear will go first. It just happened to us, but we knew that T-5 wouldn't hold, it was all a matter of how long. It lasted about 6 months and was wining pretty bad before my son took all the teeth off of 3rd a couple weeks ago. Now I am trying to get ahold of 5speedtransmissions.com. They offer (or offered, don't know if they are still in business) TKO600 conversion that WILL handle it, but I haven't heard back from them yet. Let ya know if I do here from them.
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Old Sep 3, 2011 | 02:56 PM
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mackjar66's Avatar
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From: Lafayette, IN
Car: 1989 GTA
Engine: pending install 383 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: 11.5:1 comp ratio 327 with a t-5 behind it. how long will the t-5 last?

I'm pushing 425/410 at the flywheel my t-5 has 80k on it and a hurst short throw. I've been driving the. At daily for three months with no issues. But I do not abuse my car. I built mine to cruise and that's what it does. If you built it to drag, go with a t56
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Old Sep 3, 2011 | 03:15 PM
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pound's Avatar
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From: Beautiful Coastal New Jersey
Car: 1990 Firebird
Engine: 350 TBI
Transmission: T5
Axle/Gears: Auburn posi 3.73
Re: 11.5:1 comp ratio 327 with a t-5 behind it. how long will the t-5 last?

Well since this post is about 10 years old, I am sort of wondering if OP is still around and maybe he could tell us how long it lasted.
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Old Sep 3, 2011 | 03:18 PM
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From: Lafayette, IN
Car: 1989 GTA
Engine: pending install 383 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: 11.5:1 comp ratio 327 with a t-5 behind it. how long will the t-5 last?

I didn't even notice that
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