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01-24-2014, 07:54 AM | #1 |
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What stall speed to use?
I'm having a new 700R4 built, as present one has 'high-mileage leaks & looseness'. Going with a mild shift kit, one my reputable, local guy says will shift soft enough in normal driving and harder with increasing throttle. Using ~27-inch tires and a 3.73 differential--and this has been a quite satisfactory combo for 2-3 years.
Tranny man asked me what stall speed convertor--lockup type, of course--I wanted to go with. There will be no 1/4-mile runs and mostly around-town driving; maybe 1 @ 150-mile trip a year. Engine is stock 96-97(?) 5.7 vortec with 4bbl intake and carb and headers. And I DO use the lockup, planning to do the same w/new tranny as present one:locks up when it shifts into overdrive, yet I have a lockout switch run under dash to completely bypass the lock-up when I desire. Knowing practically zilch(zero)about stall speed convertors, and never driven one for any length of time, I need to ask which one to go with. He says he'd rather me specify this parameter, altho' he's calling all the other shots AFTER learning how I drive and what I want to do with my truck. Thanks, Sam |
01-24-2014, 08:01 AM | #2 |
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Re: What stall speed to use?
In my opinion, a 2500 would work just fine since it's a cruiser.
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01-24-2014, 08:32 AM | #3 |
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Location: Cold Lake, AB
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Re: What stall speed to use?
Sounds like you are in the exact boat as me regarding driving style, up level etc.
In my 700r4 I put the lockup switch and have a 2500 rpm stall. I'm very happy with the set up. |
01-24-2014, 10:47 AM | #4 |
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Join Date: Jul 2013
Location: grand blanc.mi.
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Re: What stall speed to use?
since engine is stock and assume the tranny is stock. use a stock converter what ever that may be.
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01-24-2014, 11:05 AM | #5 |
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Location: Imperial, MO
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Re: What stall speed to use?
A 2400-2800 rpm stall should be right on the money for a stock 5.7L Vortec.
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01-24-2014, 11:11 AM | #6 |
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Re: What stall speed to use?
If it were me, I`d run the BM hole shot its only 2100 first stall above stock, it will generate less heat, out side of OD, lower rpm drivibity will be better on the fuel.
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01-24-2014, 04:50 PM | #7 |
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Location: hamilton ont. canada
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Re: What stall speed to use?
whats wrong with a stock one? engine is stock,3 73s are going to get you movin quite easy.i have 700r4 3 73s 305 and 285 70s and can smolder tires with ease if I choose.my truck is soon to have 5.7 vortec with cam and will still have stock converter.by 305 I mean chev. not gmc v6
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01-24-2014, 07:40 PM | #8 |
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Location: Nashville TN
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Re: What stall speed to use?
I am getting ready to do a T5 to 700r4 swap in my 66.
After way to much brain racking, I decided to go with a FTI street brawler 2400 lock up torque converter. I heard/read many good things about FTI and the price was on budget. My set up is: -3.54 rear gear - 29" tires - turbocharged inline 250 What are you running for a trans cooler? Boucher'
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01-24-2014, 07:44 PM | #9 | |
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Re: What stall speed to use?
Quote:
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01-24-2014, 08:46 PM | #10 |
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Re: What stall speed to use?
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01-24-2014, 09:41 PM | #11 |
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Location: Murphy, MO
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Re: What stall speed to use?
I was always told to keep it below your cruising RPM on the highway. maintaining RPM below stall speed causes it to constantly slip and will burn your transmission up.
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01-24-2014, 09:48 PM | #12 |
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Re: What stall speed to use?
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01-24-2014, 09:58 PM | #13 |
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Location: Imperial, MO
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Re: What stall speed to use?
That's a good idea if you're using a non-lockup TC. With a lockup TC, that becomes a non-issue.
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