Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Anyone know the base circle of a b1?

Thread Tools
 
Search this Thread
 
Old 09-10-2002, 02:15 PM
  #1  
TECH Addict
Thread Starter
iTrader: (123)
 
xssive's Avatar
 
Join Date: Nov 2001
Location: Austin, TX
Posts: 2,255
Likes: 0
Received 2 Likes on 2 Posts

Default Anyone know the base circle of a b1?

I am trying to get the right pushrod length and need the base circle of this cam...
Old 09-10-2002, 02:53 PM
  #2  
jmX
TECH Junkie
 
jmX's Avatar
 
Join Date: Nov 2001
Location: Los Angeles
Posts: 3,604
Likes: 0
Received 0 Likes on 0 Posts
Default Re: Anyone know the base circle of a b1?

I'll bring my digital caliper tonight when I get the tranny mount from you and we can check the basecircle. Just bring the cam.
Old 09-10-2002, 04:47 PM
  #3  
TECH Fanatic
 
Tin Indian's Avatar
 
Join Date: Nov 2001
Location: SW Florida
Posts: 1,975
Likes: 0
Received 2 Likes on 2 Posts

Default Re: Anyone know the base circle of a b1?

Your stock cam has a base circle of 1.552” across the lobe. That is actually 0.776” centerline to heel (1/2 that distance).

When you measure your B1 cam across the lobe, remember, you will have to cut that distance in half and then compare it to the 0.776" number.

I will bet that the B1 is about .025" (25 thousands) less than stock.

If so, that would require .025" longer pushrods. However, they are sold in 50 thousands increments, so you might as well keep your stock rods.

It will be interesting to see what you come up with.

Ron,
Old 09-10-2002, 05:26 PM
  #4  
jmX
TECH Junkie
 
jmX's Avatar
 
Join Date: Nov 2001
Location: Los Angeles
Posts: 3,604
Likes: 0
Received 0 Likes on 0 Posts
Default Re: Anyone know the base circle of a b1?

I'm gonna make a random off the wall guess and say it'll be 1.495 <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

For what its worth blake, I use that cam with my stock heads and stock length pushrods just fine, as do many others.
Old 09-10-2002, 05:40 PM
  #5  
TECH Fanatic
 
Tin Indian's Avatar
 
Join Date: Nov 2001
Location: SW Florida
Posts: 1,975
Likes: 0
Received 2 Likes on 2 Posts

Default Re: Anyone know the base circle of a b1?

Well, I say you will measure 1.502" accross the lobe. That is .050" less than stock... 1/2 that distance would be .751" (centerline to lobe heal), >> and that is .025" less than the stock .776" centerline to heal.

<img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Old 09-10-2002, 06:41 PM
  #6  
TECH Fanatic
 
MelloYellow's Avatar
 
Join Date: Nov 2001
Location: Centrifugal City
Posts: 1,986
Likes: 0
Received 1 Like on 1 Post
Default Re: Anyone know the base circle of a b1?

Like jmX said, should be right around 1.495"




All times are GMT -5. The time now is 10:19 PM.