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Re: Help me choose a cam - 500ci [Re: DGS] #2419343 12/16/17 02:26 AM 12/16/17 02:26 AM
Joined: Apr 2005 Posts: 1,505 TN S SCATPACK 1 pro stock
SCATPACK 1 pro stock S Joined: Apr 2005 Posts: 1,505 TN	Originally Posted By DGS 500ci (4.25" stroke - 4.34" bore 440 block) Trick Flow 240 heads ootb (lightest spring package but don't mind changing them) 10.5 compression ratio - 0.040 quench Indy dual plane 440-2d intake manifold 2" headers (Dougs) Rocker arms not purchased but will probably be a set of 1.5 or 1.6 PRW + B3RE geometry kit This is a street car so low and mid rpm torque is important. As for a cam: Master______advertised___@050__@200___lobe lift__valve lift (1.5)___valve lift (1.6)__lash FC270/360_____270______240___157____.3600_____.540__________.576______.012 FC269/350_____269______242___159____.3500_____.525__________.560______.011 FC275/365_____275______244___161____.3650_____.548__________.584______.014 LSA? I'm thinking about 112° for a broad torque curve.. What about these two Hughes cams? Duration @050__lobe lift_____lift 1.5 RR____lift 1.6 RR 238/242______.372/.376___.558/.564___.595/.602 - 109° LSA 242/246______.376/.384___.564/.576___.602/.614 - 109° LSA Considering that a stock 1968 to 1972 340 came with a 272 duration cam from the factory at about 465 lift, I think either of the above cams will be very mild in a 500 inch motor. Stump puller maybe. Just my opinion of building Dodge engines the last 40+ years. Try this link to the Cam article in archives. http://www.moparts.org/Tech/Archive/motor/5.html Old Geezer Racing

Re: Help me choose a cam - 500ci [Re: DGS] #2419384 12/16/17 05:00 AM 12/16/17 05:00 AM
Joined: Jun 2005 Posts: 301 central Pa. 7 71Pan enthusiast
71Pan enthusiast 7 Joined: Jun 2005 Posts: 301 central Pa.	Call Jim @ Racer Brown his CAMS make power he is good at choosing correct cam everything is custom ground 1410 866 7660

Re: Help me choose a cam - 500ci [Re: 71Pan] #2419438 12/16/17 01:08 PM 12/16/17 01:08 PM
Joined: Jan 2003 Posts: 1,807 North Dakota Azzkikrcuda top fuel
Azzkikrcuda top fuel Joined: Jan 2003 Posts: 1,807 North Dakota	Talk to Dwayne Porter on the board here, He picked the cam for my combo, which is similar to yours and it works great. Comp Cams Nitrided cam and EDM lifters. The only Carbs I care about are under the hood!

Re: Help me choose a cam - 500ci [Re: DGS] #2419449 12/16/17 01:35 PM 12/16/17 01:35 PM
Joined: Jan 2003 Posts: 1,807 Mopar Country, Mi ccdave The Ultimate
ccdave The Ultimate Joined: Jan 2003 Posts: 1,807 Mopar Country, Mi	Would you consider a hydraulic roller? The ultimate in reliablity!

Re: Help me choose a cam - 500ci [Re: DGS] #2419551 12/16/17 06:09 PM 12/16/17 06:09 PM
Joined: Mar 2006 Posts: 2,675 Mt. Eden Ky. Hemi Allstate master
Hemi Allstate master Joined: Mar 2006 Posts: 2,675 Mt. Eden Ky.	I am using a solid FT cam from Dwayne Porter. My engine is 470" 10.7-1 .040" quench RPM heads. Performer RPM intake, Comp Pro Magnum 1.5 rockers 244* intake 252* exh. @ .050" .520 int .540 exh. 110 Lobe sep Howard's EDM lifters In @ 106* Valves adjusted cold @ .012 and .014 " I have dyno time only and the pulls started @ 3500 so I can't say for sure what we have below that RPM or what vacuum is either. I would think with your heads and 500" your numbers would be higher, and maybe a lower RPM peak HP . I hope that this info is helpful ? Mark Last edited by Hemi Allstate; 12/16/17 08:01 PM. 1996 Ram 1500 Sport 1968 road runner 1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019

Re: Help me choose a cam - 500ci [Re: 71Pan] #2419649 12/16/17 11:09 PM 12/16/17 11:09 PM
Joined: Sep 2014 Posts: 4,457 Washington M madscientist master
madscientist master M Joined: Sep 2014 Posts: 4,457 Washington	Originally Posted By 71pan Call Jim @ Racer Brown his CAMS make power he is good at choosing correct cam everything is custom ground 1410 866 7660 I agree 100%. Jim wants you to call AFTER 5 pm eastern time. You get to talk to the guy who,is actually going to grind your cam. Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston

Re: Help me choose a cam - 500ci [Re: DGS] #2419972 12/17/17 07:48 PM 12/17/17 07:48 PM
Joined: Jul 2005 Posts: 636 Graz, Austria DGS OP mopar
DGS OP mopar Joined: Jul 2005 Posts: 636 Graz, Austria	Thanks for all the great input! I'll definitely make some calls soon. Good to see that the cams/lobes I came up with are in the ballpark and not totally off.

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