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01-28-2005, 09:56 PM | #1 |
its all about the +6 inches
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Location: Hilliard Ohio
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speedo calculator???
Can some one direct me to a site....or calculate this for me.
31 inch tall tires (as sitting with the weight on them) 4.10/4.11 gears. (can never rememver which it is....C/30 HO72 rear) Auto tranny w/o lock up nor overdrive. What'll my 65 MPH RPM's be at? Can anyone tell me where to get non chevy Th350 gears? I was rather shocked to see they were not the same as chevy. That sucker is readin 60 - 70 when I am only goin 40 - 50, and it is racking up some miles just putting around the lot at work. |
01-28-2005, 10:02 PM | #2 |
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You might call a local shop with a dyno, I know my race bike mechanic in Calgary has one and dyno results were used as evidence in court as the rider (GSXR bike) disputed the police's radar gun. Just a thought, Doug
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01-28-2005, 10:12 PM | #3 |
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Right at 2900 rpms http://www.700r4.com/sitemap.shtml
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01-28-2005, 11:22 PM | #4 | |
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01-28-2005, 11:27 PM | #5 | |
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01-28-2005, 11:31 PM | #6 |
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"GQ"S MOTOR IS A BUILT 1970 LT1 CAMARO BLOCK W/ FORGED EVERYTHING, 3 DEGREE VALVE JOB, HEADS HOGGED OUT, ETC... ACCORDING TO THE PO, CHART, TIRES & MY GEARS I COULD GO OVER 200 MPH EASY WITHOUT EVEN PUSHING MY MOTOR. OF COURSE, DRAG ON A BLAZER BODY CHANGES ALL OF THAT
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01-28-2005, 10:20 PM | #7 |
its all about the +6 inches
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Sweet...that's right about what I was expecting.
I guess that isn't too bad. Thanks for the link too! |
01-28-2005, 11:11 PM | #8 |
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Longhorn Man the 2900rpm figure is correct but thats figured with total lockup with a clutch or a locking converter,I just went through this same game when I switched a th400 for the stick in my 72. I was turning appox.300 more rpm at the same speed than before because of the slippage in the non lockup converter I used. You can check out the thread "more rpms" on page two. HTH:::::::::::COBRO
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01-28-2005, 11:25 PM | #9 |
its all about the +6 inches
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Yeah, TH350 is 1 to 1.
I was kinda figuring that might be with no slippage. You're getting 300 RPM slippage at highway speed? That seems exsesive. I've never seen more than 200 or so. I have a TH400 converter in my Th350, so it'll either slip a bit more, or a bit less...I am pretty sure it is the latter. |
01-28-2005, 11:39 PM | #10 |
its all about the +6 inches
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Whats your gears & tire size, what tranny, and what's the redline?
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01-28-2005, 11:50 PM | #11 | |
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GEARS - STOCK 3:08'S OR 3:07'S TIRE SIZE - 35 X 12.5 X 15 BFG'S (8" RIM) TRANSMISSION - TH350 W/ NP205 REDLINE - BETWEEN 6500 AND 7000
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01-29-2005, 07:07 AM | #12 |
its all about the +6 inches
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at about 6000 RPM, your blazer would be doing a theoretical 200 MPH.
This is my old beater with 3.07's and 28 inch tall tires and a non lock up TH350. |
01-29-2005, 07:16 AM | #13 | |
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EXCEPT FOR THAT BIG @SS BODY CAUSING WIND DRAG
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01-29-2005, 11:05 AM | #14 |
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I like to use these calculators
http://www.tciauto.com/tech_info/calculators.htm
just for a second opinion i guess
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01-29-2005, 11:08 AM | #15 | |
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NEAT SITE
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01-29-2005, 06:01 PM | #16 | |
its all about the +6 inches
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Quote:
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01-29-2005, 07:55 PM | #17 |
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Andy, does your BOP turbo have the 1 1/2" speedo gears , like found in the 400 turbos? here is a slick site, for figuring speedo gears... http://www.novaresource.org/speedo.htm 69 L
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01-29-2005, 08:18 PM | #18 |
its all about the +6 inches
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Al, 1 1/2 inch gears does sound about right...I didn't know the 400 was like that...good news I guess huh.
Thanks man. |
01-29-2005, 08:25 PM | #19 |
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Im not real familiar with the small bop turbo, but have been into the 400, in both chevy & bop style. they both take the same speedo gear setup. if you do have the 1 1/2" gears, the Nova site will get you dialed in on the gears, as well as working for the 3/4 " dia speedo gears.....that covers it from any Gm stick (early), to the Richmond I am running.... 350 turbo (chevy), & I think powerglide 69 L
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