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Looking to change the camshaft in my engine. The engine is a 496" RB with approx. 12.5-1 comp. Indy 440-1 heads (mild porting and bowl blend) 1050 dominator running E-85. the current camshaft is an older Hughes grind:HEV5663BS with 1.6 rockers INT .626" EXH .642" duration @.050 int: 256 exh: 265 lobe sep: 108 The car is 3020lbs with me in it, 4500 dynamic converter, 727 trans, 471 gears, 33" tire. Foot brake the car. It currently runs 6.20s in the 1/8th has been 9.70s in the 1/4. I had been told by Hughes I could use a little more camshaft and was hoping to get some opinions of what I should be looking for from some of you who know more than me. Thanks

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Dude, that is impressive, especially in that car I wonder how many racers that didn't know your car where wondering what is that car doing in this staging line the first time they saw it

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... a 496" RB with approx. 12.5-1 comp. Indy 440-1 heads (mild porting and bowl blend) 1050 dominator running E-85. the current camshaft is an older Hughes grind:HEV5663BS with 1.6 rockers INT .626" EXH .642" duration @.050 int: 256 exh: 265 lobe sep: 108... I had been told by Hughes I could use a little more camshaft...

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A little more cam? I'd say you're 15-20 degrees short of what that engine wants, depending upon the converter you mentioned.

The "If it was mine..." answer is, I'd try something around 272 at .050" intake, 276 exhaust & 110 LSA installed on 106 ICL. If you had a 5K+ converter, I'd go up around 4 degrees more on both lobes.

But since all my junk are stock-stroke 440s, it's just a s.w.a.g on my part.

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The engine combo would love a 650/650 lift-290/290-108 cl.solid flat tappet cam or 680/683-284/288-108cl roller cam.these are with 1.5 rockers,1.6 is even better.We used these cams in many builds.

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If you want it right, listen to this man.

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The engine combo would love a 650/650 lift-290/290-108 cl.solid flat tappet cam or 680/683-284/288-108cl roller cam.these are with 1.5 rockers,1.6 is even better.We used these cams in many builds.

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This man has built more than anyone else you can name--Believe Him!
That 650 solid dialed in right--I like advanced to around 102 in a 440 and 105 in a 500 ( we usually race 1/8th) is one of the best cams in that combo on earth! Fiddle around with numbers until you go blind--it will still beat 90 % of the choices you will make--You were talking to another cam guru at Hughes--and ??
That 650 solid will shock you at how well it works--Period! It really needs stout springs and titanium retainers are a 100% MUST with it as well but when degreed correctly it is unbeatable with your combo-which is a classic BTW I have used dozens of them over the years and have never been unhappy. Depend on folks that have built Hundreds of big blocks not a few

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Looking to change the camshaft in my engine. The engine is a 496" RB with approx. 12.5-1 comp. Indy 440-1 heads (mild porting and bowl blend) 1050 dominator running E-85. the current camshaft is an older Hughes grind:HEV5663BS with 1.6 rockers INT .626" EXH .642" duration @.050 int: 256 exh: 265 lobe sep: 108 The car is 3020lbs with me in it, 4500 dynamic converter, 727 trans, 471 gears, 33" tire. Foot brake the car. It currently runs 6.20s in the 1/8th has been 9.70s in the 1/4. I had been told by Hughes I could use a little more camshaft and was hoping to get some opinions of what I should be looking for from some of you who know more than me. Thanks

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3020#... That is light,,,the car doesn't look 'light'.

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I have been looking at another Hughes cam or maybe Howards. Not really tied to any brand just want to get the most bang for the buck so to speak. What do you guys think about: Hughes: HUG STL6872BS3-8 3 BOLT .421"/.426" LOBE LIFT and 268/272 -108ºLSA or Maybe a Howards:HRS-722412-08 Lift .639/.639 with 1.5 rockers 272 int./272 exh. I am running 1.6 rockers and don't want to go so big it ruins the combination.

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The engine combo would love a 650/650 lift-290/290-108 cl.solid flat tappet cam or 680/683-284/288-108cl roller cam.these are with 1.5 rockers,1.6 is even better.We used these cams in many builds.

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Thats the stick "the Man" put in my ride (.650) works very well and I run it pretty detuned.

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Thanks for all the info, that's a lot bigger bump stick than what I was looking at. I will be changing the springs to match the cam but I am still running the original Indy rockers, retainers etc. that came on my heads, am I going to go beyond what these parts will regularly handle? I don't have much of a budget so I need to make sure my parts will last a few seasons. Other than the Hughes cam mentioned does anyone have a shelf part # for a good cam I need to purchase the cam lifters and springs soon.

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We use these cams with the Indy rockers and retainers with good results.Choose a good spring with aprox.225 to 250 lbs on the seat and 500 to 600 lbs. open.For best upgrades use 10 degree titanium retainers and 10 degree locks then you can use a little more spring pressure if you want.With the setup we have mentioned you can get a lot of service and life.The cams can be purchased through Comp Cams and Indy.

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We use these cams with the Indy rockers and retainers with good results.Choose a good spring with aprox.225 to 250 lbs on the seat and 500 to 600 lbs. open.For best upgrades use 10 degree titanium retainers and 10 degree locks then you can use a little more spring pressure if you want.

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