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BIG CAM ? #861113 11/23/10 12:05 AM 11/23/10 12:05 AM
Joined: Oct 2003 Posts: 110 E EJ440 OP member
EJ440 OP member E Joined: Oct 2003 Posts: 110	What would you call a big cam in a -1 headed 500rb @13.1 ?

Re: BIG CAM ? [Re: EJ440] #861114 11/23/10 12:13 AM 11/23/10 12:13 AM
Joined: Jul 2010 Posts: 2,091 Delray beach, Florida P Performance Only top fuel
Performance Only top fuel P Joined: Jul 2010 Posts: 2,091 Delray beach, Florida	anything near .800 lift or bigger. anything much smaller than that is fairly normal. machine shop owner and engine builder

Re: BIG CAM ? [Re: Performance Only] #861115 11/23/10 12:19 AM 11/23/10 12:19 AM
Joined: Oct 2003 Posts: 110 E EJ440 OP member
EJ440 OP member E Joined: Oct 2003 Posts: 110	Quote: anything near .800 lift or bigger. anything much smaller than that is fairly normal. what about @50 ?

Re: BIG CAM ? [Re: EJ440] #861116 11/23/10 12:23 AM 11/23/10 12:23 AM
Joined: Dec 2008 Posts: 1,200 UK 6 602heavy pro stock
602heavy pro stock 6 Joined: Dec 2008 Posts: 1,200 UK	Quote: Quote: anything near .800 lift or bigger. anything much smaller than that is fairly normal. what about @50 ? .006 would be a better consideration.

Re: BIG CAM ? [Re: Performance Only] #861117 11/23/10 12:48 AM 11/23/10 12:48 AM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	276/282 should do it!

Re: BIG CAM ? [Re: 602heavy] #861118 11/23/10 12:51 AM 11/23/10 12:51 AM
Joined: Jul 2010 Posts: 2,091 Delray beach, Florida P Performance Only top fuel
Performance Only top fuel P Joined: Jul 2010 Posts: 2,091 Delray beach, Florida	Quote: Quote: Quote: anything near .800 lift or bigger. anything much smaller than that is fairly normal. what about @50 ? .006 would be a better consideration. i agree. the numbers @.05 can be all over the place depending on the lobes used. machine shop owner and engine builder

Re: BIG CAM ? [Re: EJ440] #861119 11/23/10 03:57 AM 11/23/10 03:57 AM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	I think a fairly common size wotld be around 270 @ 0.050", 0.700"+ lift, so I would consider a cam big if it was larger. I made some compromises with my cam selection (Small 264 duration @ 0.050" cam, 0.715" lift) because of piston to valve clearance issues and I did not want to cut deeper valve reliefs in the pistons.

Re: BIG CAM ? [Re: 602heavy] #861120 11/23/10 04:16 AM 11/23/10 04:16 AM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	Don't you guys know that .050 numbers are the important thing!! LOL Sorry I couldn't help it.I'd think the opening and closing points as well as the design of the lobe makes the output and good track numbers,just how you figure them is the difference between men and boys.I hope for some expert opinions. Last edited by goldmember; 11/23/10 04:19 AM.

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