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Torque curves on stock engines? [message #219210]

Tue, 20 August 2013 06:45

kerry pinkerton

Messages: 2565
Registered: July 2012
Location: Harvest, Al

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Senior Member

The latest engine thread and the talk of newer trannys, made me wonder exactly what the stock torque curves look like on the 403, 455 and Caddy 500. I've seen the ones that Jim Bounds posted on his Koba motors but they are not stock.

It seems like I've seen them...somewhere... Shocked

but can't locate them.

Kerry Pinkerton - North Alabama Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L

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Re: Torque curves on stock engines? [message #219264 is a reply to message #219210]

Tue, 20 August 2013 14:15

bwevers

Messages: 597
Registered: October 2010
Location: San Jose

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Here's a link to Emery's write up on torque:
http://www.gmcws.org/techcenter/01-03tc32.html

Bill Wevers GMC49ers, GMC Western States 1975 Glenbrook - Manny Powerdrive, OneTon 455 F Block, G heads San Jose

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Re: Torque curves on stock engines? [message #219270 is a reply to message #219210]

Tue, 20 August 2013 14:25

bwevers

Messages: 597
Registered: October 2010
Location: San Jose

Karma: 5

Senior Member

Here's a link to an earlier discussion:

http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=157429&rid=1975#msg_157429

Bill Wevers GMC49ers, GMC Western States 1975 Glenbrook - Manny Powerdrive, OneTon 455 F Block, G heads San Jose

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Re: Torque curves on stock engines? [message #219275 is a reply to message #219210]

Tue, 20 August 2013 15:29

zhagrieb

Messages: 676
Registered: August 2009
Location: Portland Oregon

Karma: 0

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No Message Body

Glenn Giere, Portland OR, K7GAG '73 "Moby the Motorhome" 26'

[Updated on: Tue, 20 August 2013 15:32]

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Re: Torque curves on stock engines? [message #219339 is a reply to message #219210]

Tue, 20 August 2013 21:29

Cadillackeeper

Messages: 464
Registered: October 2012
Location: Fort Lauderdale

Karma: 1

Senior Member

These guys still hold that record at 419 mph. It gives you 8-1 compression numbers as well.The Olds is probably similar,No? Low compression/Low Power/Torque. High=High

http://www.cad500parts.com/catalog/page10.htm

77 455 Elaganza II and 67 Animal, Built 500 Powered Eldo

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Re: Torque curves on stock engines? [message #219358 is a reply to message #219210]

Tue, 20 August 2013 22:51

George B.

Messages: 213
Registered: February 2012

Karma: 1

Senior Member

There was an article showing actual dyno-test results for several GMC coaches at a dyno party several years ago. I think it was in GMC Western States or Pacific Cruisers newsletter or hand out. Looked but could not find it. Maybe someone here remembers where to find it.

George Butts Las Vegas Nevada 73 "Custom 26' Q" & 76 23' Birchaven 71 Honda 600 Coupe & 01 Tracker Toads

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Re: Torque curves on stock engines? [message #219362 is a reply to message #219358]

Tue, 20 August 2013 23:01

George B.

Messages: 213
Registered: February 2012

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Senior Member

Found it. Dyno test towards the end of the article.

http://gmcws.org/Tech/Final_Drive_Ratios.pdf

George Butts Las Vegas Nevada 73 "Custom 26' Q" & 76 23' Birchaven 71 Honda 600 Coupe & 01 Tracker Toads

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Re: Torque curves on stock engines? [message #219392 is a reply to message #219362]

Wed, 21 August 2013 07:00

kerry pinkerton

Messages: 2565
Registered: July 2012
Location: Harvest, Al

Karma: 15

Senior Member

George B. wrote on Tue, 20 August 2013 23:01

Found it. Dyno test towards the end of the article.

http://gmcws.org/Tech/Final_Drive_Ratios.pdf

George, that is an absolutely GREAT article. Full of really useful and interesting information.

Kerry Pinkerton - North Alabama Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L

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