Anybody using a T-man 625 in a 95/97/98 build.Been talking to TR and looking at his stage II heads,s&s 97" bb,TR625 cam...set at 10:25:1 comp(Tr's recommendation)Want to know how it runs ,if its noisy and has it been reliable? Thanks Dave

 

Can't speak to the 625 but have run TMans 590 and 525 in a 107" and both are quiet; also running Woods directional lifters. Honestly, the butt dyno is not registering much differecence between the two but neither were dyno tuned. Some minor jetting adjustments and same ignition map. I like both cams but have convinced myself that I can bulid a good runner with cam lifts in the .555" range and mininmize changes to valve train geometry that result in valve train noise.

 

I'm happy with 625, it's very quiet and pulls very hard

 

Not in the cube inch engine you requested. But the 625 in my 103 ci State IV is a great performer. You are going to have valve train noise increase with any cam with this amount of lift. I run Black Ops lifters and my valve train noise is acceptable.

You do as TR says and you can't go wrong. He knows his stuff.

Jim

 

Not knocking al704's numbers/chart but my 95" FXSTD is making 104TQ/94HP with a set of TW44G cams, with .495" lift. Allow for a 3.2% displacement inrease to 98" and those numbers would likely increas to 107TQ/97HP. My earlier point was that the trade off for a marginal increase in TQ/HP by going with more lift is valve train noise. Not an issue for some, but I hate valve train noise; spoils the ride for me. Anytime lift gets over .600" valve train geometry is altered and makes more noise regardless of cam manufacturer. Hi lift cams usually require stiffer springs whcih also add to the melody.

 

This question was aked to TR he said with his stage II heads no problem or if I wanted to use the 555.....590 ...625......even said the 525 all about the same just different duration......Just don't want noises I don't need...also read less duration moves the power to the left.

 

And it also moves the power down too, not just left. The .590 just seems like a winner to me in a smaller engine. Once the engine size gets bigger his .650 seems like the way to go. All the other one's seem like a marketing come on to hook the buyer, you know , like looky here this is a magic cam(662 series). I'll bet a guy could easily be satisfied with, for stock heads the 525, motors with head work under 110" the .590 , and any engine larger than 110" the .650. Maybe I just like things simple.

 

I actually ran the T-Man 590 in my 120 with good results, and the base cam in that build was the HQ 575 which I put 40,000 miles on at 125/145 and 40 mpg.

For a street engine that you are not looking to drag race and get the absolute last hp/tq, there is no need to go over 600 lift IMO unless you are chasing numbers. It all depends on what you want, but I would go witht he 525 if you absolutely want to keep valve train noise to a minimum, and no larger than the 590, but they have sifferent profiles so will perform differently.

If you are truly building for ultimate performance, yes, go withthe bigger cams but you will find that most complaints tuners find when setting up a bike is that it is overcammed and not a docile, or quiet beast.

 

Dalton...we have spoken before and what you say makes sense,just seemed funny his first response when I asked him was his 625 cam with his stage II heads.He then said I could use his 590..555...or his 525 as they are all very similar.I am looking to have better lower end and mid range performance as I ride in the 2000 to 4500 ranges with some 4800 to 5000.Have NEVER hit the limiter.

 

Can't say I'd refer to the 662 series as a "marketing come on to hook the buyer."

Look closely at the difference in specs between the three cams. They are three totally different cams when it comes to timing, LSA, Overlap, etc. He does group them together and calls them a "series" of cams. Nothing magical about that. I look at those three cams and see one and that fits my riding style. I wouldn't feel hooked at all if I bought that one. And I can see where I would choose two of the three over the 650 depending on my riding style. All with the same 103 ci Stage IV motor once I matched my motor to the cam ie., static CR and CCP.

Just my $0.02.

Jim