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- Newsgroups: alt.hotrod,wiz.hotrod
- Path: sparky!uunet!destroyer!sol.ctr.columbia.edu!emory!rsiatl!hotrod
- From: hotrod@dixie.com (The Hotrod List)
- Subject: Torque converters and axle ratios
- Message-ID: <6kkq+4b@dixie.com>
- Date: Tue, 17 Nov 92 16:29:28 GMT
- Organization: Dixie Communications Public Access. The Mouth of the South.
- To: hotrod@dixie.com
- Reply-To: hotrod@dixie.com
- Posted-Date: Tuesday, Nov 17 11:29:22
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- Approved: jgd@dixie.com
- Lines: 29
-
-
- Wow is there confusion on these simple parts.
- well I give them a shoot at making them fairly simple.
-
- Start with the cam shaft. Most cams advertise an rpm range,
- that is fairly accurate. Example 2,000 to 5,000, or 2,700 to
- 6,000 or even 3,500 to 8,500.
-
- Now looking at which torque converter will gove the best
- performance look at the lower RPM of the cam and match that to
- the converter Stall speed.
-
- Next rear axle ratios. Look at what you expect your car to
- be able to do in the 1/4 mile as far as ET. Taks this ET
- and divide it into 1300 to get aproximate top speed needed.
- example 10 seconds at 130mph or 13 sec at 100mph. Now match
- you top rpm listed for your cam with your tires and axle ratio
- to hit that speed at that many rpm's. More detailed formulas
- were priorly posted.
-
- Now for the street person. Advice do not use an exotic cam.
- Stock cams alow stock converters that usually last longer.
- Advice 2 unless you own an oil company use the formula as
- above for rear axles only add that axle ratio to 3.23 and
- divide by two to give you some compromise, on economy and
- performance.
-
- ----------
- Posted by: emory!picard.med.ge.com!bednarek (Dennis Bednarek Mfg 4-6971)
-