Bullet cams
 

Just thought I’d pass along I had a good conversation with Kirk today at bullet cams. Very nice guy and to the point but I kept it short as I’m sure they get so many Guys just calling to bend their brain and go elsewhere or buy off the shelf. Shelf be fine just don’t waste someone’s valuable time.

He likes to make power for sure. I haven’t used their lobes in years however the last grinds that came from them made very noticeable difference in power. Ultradyne lobes.

It's really surprising that asymmetrical lobes never became more commonplace with the marine crowd. I really don't think the choices being promoted were right for the average performance boater; think Marine Kinetics here - big lift, short duration, asymmetrical lobes that would out accelerate any comparable Crane cam AND make more on the top end - for a season or 2. Powerful, noisy and didn't last. Made Bob Madera famous around here. It was also his demise. If you want a Harold Brookshire type lobe for marine, you really have to hunt as most of these lobes are just too intense for marine when you get into the bigger lifts IMO. Howards has some mellowed out versions and I have never heard anything bad about Lunati's Voodoo cams. One thing for sure, is I really miss the old Ultradyne cam I had - nothing like it, but I stuck a piston in that motor and it turned me into Mr. Reliability ever since. I've been boring, but Iv'e been boating.

You ever see the videos from their 'shop'?
Scary.
https://www.youtube.com/watch?v=T4QFk87bbrk


got some good ol boys and some 1950 equipment right deeerrrr.

I`ll stick with CompCams and Billy Gold.

I've used Harold B cams for many years in my marine engines years ago and those damn things did make power! I'm running Bullet cams in my 502s and this coming season will be 21 years on those cams, Like Getrdunn said they have a great staff, I run Bullet in my little 302 Ford as well. +1 for Bullet.

Disclaimer! I did buy Crane Cams for my latest project engines, but they are a different platform, solid roller stuff

I did visit their shop, can't argue ICDEDPPL's point, but also can't argue with their results either.

Round table talk....You guys know done company bought Comp Cams and Edelbrock not long ago. Edelbrock just closed their Torrance , CA headquarters. Yeh the one they opened 1st, in the 30’s. I just found this out today , first stumbling across this article:

https://www.thedrive.com/news/39011/...a-headquarters

FWIW, the Lunati and Howard’s cams are done on a Landis Machine.

Used Bullet for years on our naturally aspirated drag race motors & again when we made the jump to blown alcohol. Great people to deal with, top notch operation. Always made more power than expected.

Comp has too much technology into their lobes not to go with them and best pricing. I believe all of their lobes are spintron tested and will not grind a lobe that has not been tested as stable. I loved my Ultradyne solid cams in my 454's and made good power.
https://cimg6.ibsrv.net/gimg/www.off...2f5a215c0a.jpg

Bullet made a reverse rotation cam for a big inch big blower engine with big chief heads for us that is pretty extreme 2 engines one reverse for a pair of arnson drives they also ground the cam in our 25 active thunder with an 540 it absolutely Rocks

😂😂😂

I ran across that some time ago. It is funny but I’ve been to some places over the years “Like hills have eyes” or “wrong turn” and yet got great service and work performed was A1.

Those guys down there have been known for such.

Kind of funny it was the mustang 302 boss I had to reinstall the ultradyne back in the engine after rebuild with the new grind/cam. What was strange is the specs were fairly close. That was a 8,000 rpm engine.

Just a smart business move. Not the end of Edelbrock. Better explanation here

What rpm did that peak at? Healthy cam for a 454. Marine or street.

Were those used in combo with Merlin heads?

I didn’t know that and I have a strange (obvious) feeling we’re going to see a lot more of that happening over the next couple to several years. How quickly times change. Are we going to see the times when your only able to get fuel from the black market?

Marine, I shut the dyno down at 6500 590HP. It was still building a little bit of power, but I didn't care what that number would be. Peak TQ was 563 @ 5200. Yes the Merlin heads. I can't remember if I ran them for a hot second with heads Dart cast for Valako. I'll have to check my notes.

I just installed a hydraulic roller Bullet custom grind. They were really nice and quick to get me my new specs. My only issue was I had to install it 6 degrees advanced to match the cam card and the 109 intake lobe center.

I am hoping to get it dyno'd soon. This is in a 555 BBC
https://cimg2.ibsrv.net/gimg/www.off...43d18d3fab.jpg

we run a bullet grind number CHB 286/292-10r solid on a 540 with a dominator it has great manners does not load up, has smooth power all the way up the power band and really lights off at around 5800 we turn it to 6800 a bit north of 800 hp valve lash scared me at first at 26 thou hot but it is quiet(rocker noise) and reliable the exhaust has a very sharp crackle i did not swap firing order because its hard to remember its different i like the keep it simple thing

Tahoe, how many RPMs do you plan on running this 555? looks like a nice profile

Do you have dyno sheet? What heads? Thanks

I rember you original build sigle patern cam. I need to contact you about your water plumbing as I have the thermostat oil coolers like yours. I'm amazed they spec'd that cam with the said duration.

Was wondering the same. Valako knows me all to well and very adamant about staying in the 240-246 (max) range to run at 6,300 with his ported heads. He knows his heads very well and can't argue with him but it's amazing how the cam tech guys advising me to be in the 256-262 range. Are they trying to get me closer to peak torque? Just guessing!

A bit confusing but I like to listen to my head guy. He doesn't want me to sacrifice velocity I'm pretty certain and to optimize HP at said rpm. I rember Mild Thunder using several different grinds in a 540 platform simulation a few years back. But with a stock afr 325 head if I recall. Was a good informative thread he took the time for all to see. What's kinda funny when I dropped my rotating assemblies off at more power racing yesterday for balancing they are still using mostly the old school 741, 651, and 881 crane shelf grinds on the majority of their builds. Dick (owner) said the few customers that bring in their own custom grinds for their builds fell on their face and end up swapping out to old school. Hard to believe and I'm sure doesn't apply to all.

Mark and Kirk at Bullet are damn good , and price and turn around are excellent.

I can't tell from the cam card but if the cam has Asymmetrical lobes you have to consider this when degreeing in the cam. Instead of checking @ .050 you check at .020 from max lift.

Hmmm! You’d think Note: on cam card. Good info regardless.

Did you ever go aftermarket heads? Seems like I recall you had ported 088's and a 252/252-652/652 and high elevation but I may very well be incorrect... Just what I recall from years ago. Either way keep us posted with your dyno session and wish you the best of luck.

we used ported cast iron darts used a crane dynoed at 807 but was a terrible combo it loaded up had a spike in power getting on plane from bogging to snapping to life kinda like a dirt bike the bullet really tamed everything out and winds up much higher i did not dyno the bullet cam

I did measure at .020 and was the same. I did read about the asymmetrical lobes.

This motor now has BB2xtra CNC heads with Jesel shaft rockers. It also has a matching brodix intake.

I also got a set of Johnson lifters from Teague.

I think the heads are too big for this motor but it is what I have.

This motor is going into a jet boat I bought. I am running an A impeller and from the HP chart it should run 5800-6000 rpm.

I want to have it dyno'd after I am done building it.

Just curious if you dyno'd yet? Hope all works well with close to meeting your goals. Might need to modify your impeller a bit to get your rpm's up a bit more. Be nice to see that turn around 6,500. Would be fun to bring it down closer to sea level for a weekend.
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