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Old 12-23-2008, 03:27 PM
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bbc cam id

I bought a 454 short block and I'm trying to find out what cam it is ??????

The #'s on cam are hr286-1 hr290-2 hr12 p6564
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Old 12-23-2008, 03:42 PM
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Quote:
Originally Posted by 198plus
I bought a 454 short block and I'm trying to find out what cam it is ??????

The #'s on cam are hr286-1 hr290-2 hr12 p6564
Just off the top of my head, I'd think it is a hydraulic roller, 286 degrees intake duration, 290 degrees exhaust duration ground on a 112 degree lobe separation angle. However, that's just a guess.
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Old 12-23-2008, 04:20 PM
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I just bought this short block today it's a 454 bowtie 10051107 casting number and it is a hyd. roller, is there any other way to find out what this cam is ?????????? Thanks

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Just off the top of my head, I'd think it is a hydraulic roller, 286 degrees intake duration, 290 degrees exhaust duration ground on a 112 degree lobe separation angle. However, that's just a guess.
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Old 12-23-2008, 04:37 PM
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What part of my answer didn't you like?
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Old 12-23-2008, 04:51 PM
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Oh I liked all of it Just trying to find out who makes this cam and what the lift is ???? I found some more #'s on back of cam L492Z. Thanks

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Old 12-23-2008, 07:41 PM
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Use your dial caliper to determine lift. Measure across the heel/nose. Write it down. Measure across the ramps. Write it under the other figure. Subtract. This is cam lift. Multiply times rocker arm ratio to find valve lift. Intake lift will be different from exhaust lift.

Do you have a degree wheel and a dial indicator?

If you're gonna fiddle around with motors, these are a "must have". Here's the best type of dial indicator to use, Starrett #25-441J....
http://cgi.ebay.com/ebaymotors/Starr...motiveQ5fTools

Here's the magnetic base to hold the dial indicator.....
http://www.transcat.com/Catalog/prod...temnum=85235PD

Here's your degree wheel.....http://cgi.ebay.com/ebaymotors/NEW-M...1%7C240%3A1318

Last edited by techinspector1; 12-23-2008 at 08:18 PM.
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