How to pick the right Cams for my Harley part 6

How to pick the right Cams for my Harley part 6
Harley Davidson performance up grades things to know before you get started.
Getting the performance and reliability out of your Harley Davidson is more than just buying Well advertised part. This series of videos are not to tell you what you should buy or to sell you anything. Rather to give you an enough information that you can make intelligent decisions when making performance upgrades on your Harley Davidson motorcycle.
Some of my favorite cams------
Shovel 74" inch---------CLICK LINK----------amzn.to/379xYtm
Shovel 80" inch----------CLICK LINK----------amzn.to/379xYtm
Shovel 80" Inch--Hot rod 9;1 + ---------------amzn.to/3ajfBUR
EVO 80"--100"----------CLICK LINK------------amzn.to/37c7irK
Twin Cam ------Coming soon
/ bikersphd
bikersphd.com

[@yamahamiketoth]

most helpful information I’ve came across in my journey to try and learn about Harley cams, thank you

[@markjaycox8811]

I've been watching YTV's about Harley Davidsons since I got my 1st one, '16Black/FXSE. Nobody so far has been as in depth as you. Quite impressed, and I'll be watching more videos and asking more questions, because I am building this bike not for peak power but for great power and great reliability. My plan is to use SE/Parts and the 117, and having the heads ported and polished. Everything has to work together, and I am a novice about H-D engines, so, I'm taking my time, and getting as much info as I can before diving into a disaster area. Somewhere in all your knowledge is my perfect engine, and one day, I'm going to be listening to it. Building a H-D is the most fun and the most work I've done in a long time. Research Research Research. Glad I found your channel. I say I am building it- my mind is- but a PRO is putting it together.

[@MegaBrownie44]

I agree Gary. The T-Man 625 is a fantastic cam that doesn't get used enough.

[@sandrider1962]

Thanks for this series..... Much info to unpack, will watch again

[@hesneyk1]

Wow! Best articulation I've heard yet. You're very knowledgable.

[@RRoosa]

Great videos. Very informative. I appreciate you taking the time to educate people about cams and big bore cylinders. I own a 2019 HD Street Glide Special with an M8 114. I am considering upgrading the engine, but have a lot more questions after watching your videos. Some of the claims I was hearing from the dealer don’t make sense. Anyway, thank you for providing this helpful information.

[@trailerparkcryptoking5213]

George Bryce has his own cam design for a bolt-in that is really close to the first cam at the top of your list! I’m sure you know who he is!

[@jpvargas974]

Giving info so I can get correct results :) . My wife moved up into my old 2001 Softail Night train. 88ci it has a stage 1 air cleaner, SE racing Carb, SE racing intake manifold, SE 211 cams, Vance and hines original shots. The softtail can burn the tires and will pull like a beast. sounds like one as well. getting on the freeway it is still pulling hard at 80 mph and ready for more. I moved into a 2016 RG with SE Stage 1 air cleaner, RCX Tormentor Header, CFR slip on's, Thundermax ecm. I realize it is a different motor and a heavier bike. However it is a pig coming off a stop and trying to get on it unless I down shift two gears. It lays there like a unenthusiastic hooker. I shift anywhere from 3.0 to 4.5 grand depending on what i'm doing. I want more coming off a stop to get the heavy bike going and the hard pull up to 100 mph + like my old softtail . I cannot believe I spent almost twice what I did for my softail to get a lazy bike. Anyway I have been told 585 cam, 525, ect. sounds like 555 fits the bill. what do you suggest. Thank you.

[@trailerparkcryptoking5213]

Up your compression, then pic a cam that still closes the intake valve a little early. This gives big bottom end torque which is what you want. Find an online calculator for dynamic compression and play with the compression ratio and intake valve closing numbers until you get the largest DCR for the gasoline you are going to run (research or ask an expert)!!! Another serious consideration would be to put a smaller sprocket on the front or larger on the back.....(gearing) just a thought....it works because it multiplies torque to the rear tire

[@martyportersr7008]

Gary, you have a good explanation of what cams do. I have an 18 Fatboy with a 114 and I looking to put in a big bore 124 kit. I don't ride high in the rpm range. But I do want it to sound like a top fueler and have plenty of low to mid-range power. The M8 is a different engine than previous Harleys so I am looking to get educated.

[@1550tc]

Marty Porter Sr CAll Bob wood at wood performance 12055254949 with the se heads the 77x go look at the dyno runs on any of his cams

[@kennethwise7108]

Great video, currently building an 89" Evo stroker (4.625" stroke) for my Road Glide. Ill going be porting and CC my own heads. I like the S&S 510 and the EV51 and I'm torn between the two.... thoughts?

[@billiondollardan]

Cool video, dude. I think it's great that you did all the work to put this together

[@krisyaz1545]

Great video.. Very helpful. I like " going no where, just like the exhaust. " 😂. Alot info.

[@destanstein1875]

Ok bro thank you But which one is good for torque and good sound on a twincam engine ?

[@anthonysantora4924]

Gary, I ride a 2014 Heritage and want to upgrade my cam, what’s your thoughts on a wood tw 222 and S&S 570 cams? Only your opinion, not holding you responsible for anything else. Thanks

[@61panman]

Hi, Gary, I like your videos but when you talk about the intake valve closing early to create more compression you are pointing to and taking the numbers from the open column, which I believe is the number (degrees) for exhaust valve opening and not the intake closing?

[@Vtwinheaddoctor]

Thanks for pointing that out to be honest with you I am deafly not an expert at making these videos I had my wife right the board out I would have normally did at different had in one column the Intake and in the other column exhaust instead of opening and closing even with that said though I more of the type that can't walk and chew bubble gum at the same time specialy when I'm doing something that is really not all that comfortable for me to do thanks for watching the video I hope you enjoy it anyway thanks Gary.

[@wesleyellison7524]

Hi Gary I gotta 06 road glide with stock 88 cubic inch twin cam and I recently ordered a S&S kit that came with adjustable pushrods, lifters, hydraulic cam tensioners, and the 510 cams. But my heads haven’t been ported and pretty sure it’s 9.1 compression piston. So my question is will those 510 cams be okay to run with non ported heads and that 9.1 compression? Cause In your video on the 510’s you talked about prolly should bump the compression up to 10.1 pistons.

[@levialston1496]

I'm looking at doing a cam upgrade but just my opinion compression test would help with what cam to go with if I need to replace the jugs

[@billbrunsell3052]

Great video and great technical info! Thanks!

[@dereknapier1132]

What’s your opinion of an Andrews 67n in a 95” with 10.5:1?

[@ltsgarage7780]

Gary. Why not make a bigger board so we can actually see what you are talking about. It sounds like you know what you are saying. But without seeing the actual numbers. We can't understand everything you are saying. I have a stock S&S 124 supersidewider motor. What cam should I use to make it sound just like a top fuel dragster and still work at low & mid range. I don't think it likes to be wound out to tight... I also have an 80 inch I would like to sound like a top fuel motor also....

[@greekos573]

Hey, got a 98 Fat Boy 1340 Evo with Arlen Ness Big Sucker Air Cleaner and after market Stagered Exhaust, best cam for this set up in your opinion? Thanks..awesome vids you make!

[@davidhoman3887]

Older video obviously but what's your thoughts between tman 590 vs the 660? Is it worth the extra money to run the 660?

[@Heavy69Metal]

I’m thinking of a S&S 550 or 475 with 4.310 131 pistons at 11.7 and possibly a 4.625 flywheel making it 135. Which cam would be best 550 or 475 I have an M8 and seeking a gear cam over chain. These are the two appealing to me right now.

[@franklinfannin1610]

Hi Gary I have a 2017 Dyna Street Bob. Rarely will I go over 70mph. I ride mostly in the 2000 rpm range. Mostly I am looking for a cam for the low and mid range. What cam would you suggest? I have Vance and Hines short shots exhaust. I know they're not good for performance but want to keep them for the looks and sound.

[@DeuceVideoHD]

You're lugging your engine if you live in the 2k range, man.

[@DeBa1226]

What Cam would you like in an 88ci if you go with bigger jugs, tuner

[@CarlosGarcia-ls4hn]

What is the definition of "bolt in" versus "performance" cams.

[@supersoni126]

Hi Gary I would like to know your opinion on these specs. I'm having a little bit of a difficult time deciding which cams I want for my dyna. I know that I prefer a mid to higher rpm power band. I'm never really under 3k rpm I have a few videos. always hooning and wrapping out the tach Open 20˚/49˚ Close 50˚/22˚ Duration 249˚/251˚ Lift .575" Centerline intake 102.7˚ Centerline exhaust 101.5˚ Lift at TDC INT .199" lift at TDC EXH .206 Do you think this will fit the bill for me or should I look for more of a mid range cam. At the moment my 96ci has a stage 1 a/c with a d&d fat cat and powervision auto tune. Will pull a couple bike lengths on the two stock 103s that I ride with. But I want to be able to hang a little better with my buddies FXDLS. Ha. Rev limit set to 6.2k but the stock cams really dont make much if anything up there. Just setting the rev limit higher gave me the edge on the stock 103s but once they do even stage 1 I'll be back behind the pack. Also will be rehearing the bike 30front and 70rear. So I'll never be below 3-3.5k With that gearing, 80mph in 5th will be right around 3.9k and in 6th will be right around 3.3k.

[@bradleyvisintin]

Great video!

[@9960sa003]

Can I install S&S 510 to 96ci engine?

[@swarnsingh6662]

Hi i got 2020 fatboy 30th anniversary. And installed jekill and hyde exhaust. But what it’s exhaust sound right now i want double of loud exhaust. And somebody told me that I should get cams. Can u plz help me out

[@riddlersrevenge93]

What's the Best midrange cam if I'm running a Thunderheader?

[@danychxx4657]

04 Flstc 88IC with Arlen ness big sucker & thunderheader. What cam ? 525 or 555 ?

[@GPgman]

What cam would you think is a good cam for a 2015 twin cooler ultra. The stock cam is good down low but falls flat at about 4,500 rpm. I’d like to try to keep the low rpm power because I’m riding with my girlfriend 90% of the time but hate the hitting the wall feeling at 4500 rpm. I have a screamen eagle airfilter kit and a Vance and Hines pro pipe and using a FP3. Thanks.

[@vtwinpower1897]

Hey Gary I got a 03 ultra with a S&S 106 stroker, ported heads, chain drive, airshifter, nitrous on board 55mil throttle body. I'm running 585 cams now, what's the best race cams should I b running now? N have u got any feed back on a 143 dragon motor? I'm always chasing the HP!!.😎

[@Vtwinheaddoctor]

I'd love at T-Mans 660

[@jamesoakley9333]

Earned a new sub with your quality video. I'll be sure to check out your other stuff.

[@derrickw5660]

Is it ok to run a s&s 640 cams in a built 113

[@buckeyebanshee]

What’s your opinion of a S&S 570 cam? Have ported polished heads high compression pistons larger Vance and Hines valves 58mm throttle body upgraded valve springs 103ci twin cam motor.

[@Vtwinheaddoctor]

I'm not big on S&S cams for twin Cam S&S makes some really good cams just not for a twin Cam in my opinion. The 58 is a good choice that's as big as I would go. Defiling would want to port heads.

[@buckeyebanshee]

Gary Cave defiling would want to port heads? Not sure what that means. My heads are ported and polished. What’s a good cam for my setup if I like mid 3k to high 6k rpm power?

[@gvs5318]

when talking about building compression, what affect will this have on premature detonation given we're limited to 93/91 octane gas?

[@JETFILMCHANNEL]

91-93 is perfectly fine for the compression that these engines are capable of.

[@duvelusmc6984]

i'm doubting which one to take, EV27 (or EV13) or the fueling parts 543 cam ... What do you recommend, I don't want to do too many modifications to my '97 dyna at first got a stock carb/air cleaner and supertrapp exhaust.

[@Vtwinheaddoctor]

Not a big VE cam fan

[@zachebert9509]

Can you keep a stock oil pump with 570 cams

[@bullast2046]

5yr old video.. but I can’t lie.. I understand lift.. but the four numbers under “open” and “close” have me completely lost.. 13/50 and 33/22 are Arabic to me.. I think I understand duration but prob not.. I need pictures.. preferably scratch and sniff

[@lawdawg5823]

Hey Gary, I have Tman 555 torqster cans in my 16 103 twin cam. Would I be ok keeping those cams and going with 110” cylinders and pistons and keeping stock heads? Anything else I should change or would I be good to go?

[@Vtwinheaddoctor]

I would need to ask you some questions before I could answer this properly if you want give me a call [phone]

[@jrocksgaming2855]

Gday Gary I got a 96 softail custom with a evo engine I want to rebuild so I need a very choppy/ angry cam what do you Recommend

[@Vtwinheaddoctor]

S and S has a great 1 I'll try and throw you a link

[@juanrios5137]

Gary Cave is that you brother

[@Chuckscycle]

Very informative thanks

[@brandywine1548]

Hey Gary i have a 98 bigdog pitbull It is 100% stock. Its a 98ci s&s what is the most powerful cam for my setup without machine work is needed?

[@Vtwinheaddoctor]

T man has a 590 that works great in that motor.

[@eddiedawkins19]

What's the best mid range to upper end, with a stock 2012 ultra classic 103 , but has a good chopping sound at same time...that's what I want

[@eddiedawkins19]

Also I like riding 70mph and up...open road riding

[@bendaves77]

@@eddiedawkins19 a good all around cam for your bike is the s&s 551 easy start... I've got a buddy who is running them and pulls a trailer and it runs and you don't have to add compression releases with the easy start.. with that cam and having the heads done you should be upwards of the 100 mark for both torque and horsepower and it's a cam that performs all the way through the rpms

[@RGHD912]

Why did Gary go out of business

[@jesusgallardo7908]

Hi Gary, I'm torn between S&S' 465C cam and Harley's SE8-447 for my '18 Roadking Special (M8). I'd appreciate your input. Great videos btw!! 🤘

[@austintodd5036]

The s&s will carry your power out further then then harley

[@jayflynn9832]

What cam makes it Potatoe? That's what I need.

[@2KCamaroZ28SS]

585

[@mrblack11100]

Hey I have a 2017 street glide cvo I'm looking to upgrading my cam. which one do you recommend already have a D&D Billet Cat 2:1 Full System and Harley-Davidson Screamin' Eagle Ventilator Elite Air Cleaner.

[@jordantserghanos2604]

Great information. I own a 210 Street Glide with SE air cleaner and OEM 2 into 1 head pipe with a Screamin eagle nightstick( supertrapp slip-on). I am thinking of a couple of things and could use advice as everyone thinks they know whats best. I am thinking of decating the head pipe, good or bad idea? Cams I have been suggestd are HD CVO-255 cam, SE 254E cam, Andrews 48H and the Woods 222 cam. I want a bump in low end but don't want to lose passing power if needed at speeds of 60-80 mph. What are your thoughts, I have a Screamin Eagle Pro tuner....

[@Vtwinheaddoctor]

Glad you like the video out of the choices of cams you've listed I would definitely pick the woods.

[@jordantserghanos2604]

Thanks for the response. Any thoughts on my idea to decat the head pipe? @@Vtwinheaddoctor

[@Vtwinheaddoctor]

@@jordantserghanos2604 most definitely!!

[@bebop2599]

Hi Gary. Great vids I have a two year old 1200cc sportster with stage 1. I’m about to get installed a screemin eagle performance II cam SE-585, part number 25400125, Will I loose any low end off the line acceleration ? I don’t want make a mistake and loose this, infact I want it better because of the cam! Thanks

[@austintodd5036]

Dont put ANY cam in your sportster if you don't want to lose bottom end. The stock W cam is your best bet.

[@liamstandish878]

I got a stock 98 evo looking for torque... 585 or 555 mabe??

[@Frankfoot986]

Danny Standish ev27 or ev13 Andrews if your motor is mostly stock w exhaust and intake

[@jerryhubbard4461]

OK

[@cesarg6948]

Question,, what specs of a cam would get you starting at say 2k and keep pulling til 6500 with as much as 11.1 compression?

[@Vtwinheaddoctor]

the 660 lift cam

[@cesarg6948]

Thank you very much. Thanks again for taking the time to do the videos and please keep them coming.

[@Vtwinheaddoctor]

Thanks for the kind words!

[@Mcorre]

Can you fo my bike??

[@jamesbennett9654]

Hope you're not too confusing you're going too fast for anybody to absorb what you're talking about

[@lancasterjim2441]

Take his info with a grain of salt he needs to do more homework. Duration is Not what determines your power band. Overlap determines your power band. There is no tricking an engine into making power. A smart builder will utilize and take advantage of different factors of a cams profile to make the most power with a given set of parts.

[@robertmason8341]

I agree with you about taking his info with a grain of salt. Been building motorcycles/engines for 30 years and neither I nor any builders I know pick a cam by it’s duration. There’s a combination of 3 things (primarily) that need considered and all 3 must be considered in combination with each other. They are intake lift, intake duration, and intake valve closing (not in any particular order because they all must be considered together). Lift must be matched to where your heads peak in flow volume (cfm) primarily and air speed (velocity) thereafter. Duration determines rpm potential with short duration limiting peak rpm and longer allowing an engine to rev higher and continue to produce more power as long as the cylinder head can provide necessary volume to support those rpms. When the intake valve closes directly affects the building of cylinder pressure which is dynamic compression, ie cranking compression read on a gauge not static compression which is swept volume of the cylinder at TDC compared to BDC (determined by piston dome configuration (or flat top or dish), cc volume of heads combustion chamber, head gasket thickness. If you close the intake very early you get really high cylinder pressures and make tons of torque down but trade it for less high rpm hp. Detonation (spark knock) comes into play as you can run right past pump gas’s resistance to knock (which is what octane is defined as). All the other cam specs come into play but those are the big three. Overlap and exhaust scavenging fresh fuel/air charge into the intake port gives a “free” effect that could be thought of as a mild “supercharging” and thus increased volumetric efficiency. Cams are complicated but if you break things down and look at everything thoughtfully choosing a cam becomes much easier. These Harley twin cams have been explored to death. Each of the big manufacturers have almost the same stuff. Torque cams, horsepower cams, broad range little of both cams. A few thousandths lift and a few degrees of duration and one company’s cam is almost identical to another’s. Some of the companies don’t even grind their own cams. Cam grinding an “art” in the machining world quite outside of most shops expertise even those that can cut some nice shiny billet parts on a 5 axis cnc. Designing cams an even further “art” form packed with math and technical aspects. There’s a reason why Andrews grinds cams for other big names.

[@garyleake9287]

What's a good cam for an 88 cubic inch b motor stock to give it the most all-around power