Steve,

I checked my Comp Cams valve spring book, and installed at 1.800 they are rated at 148 lbs at the seat, and the book says they have a 331 open load. The spec sheet has the seat numbers from 1.80 and smaller. I know that mine are at 1.800, and yours shouldnt be a problem installed at 1.810. The spring pressure doesnt have an effect on cam decision. I allready had these springs, and this is what Joe was hoping I had. The more aggressive the cam, the more spring presure you will need to keep from getting valve float at higher rpms.

Schurters LT1,
I did have the 987's with my XE 236/242 and I had excessive valve float above 6400 rpm. I have been noticing that alot of the LS1 cars and these springs are having the same problems. I dont think they have enough seat pressure for the larger cams. If you upgrade to a new cam, I would highly suggest the 985's installed at either 1.75 or 1.80.

Brian

 

987 wont work i realy don't want to up gread but ....do you have to machine the head to get the bigger spring....can't rember all this

 

Is Joes phone not working or something, or do you not have a phonline? Not to be rude, but I called him talked to him for 20 minutes, awesome guy to talk to, wont try to sell it to you, his results sell themselves, he will tell you what valvetrain you need dependant on what your goals are, just cuz you have say a 350 and you want his custom billet cam, doesnt mean you will have the same cam as every other 350 cam he grinds, all cams have different needs, ie mine needs 977, even higher pressures than the 985s i believe, both for stroker motors though....

hey, ya gotta pay to play

 

A lot of the valvetrain life depends on what you need. Springs are not going to last as long on a .600 lift setup as they would on a stock motor, just doesn't work like that.

Throw in an aggressive ramp on the cam lobe and it's going to take more spring life away.

Personally my springs are as much a secret as the cam specs.

I also am a sticker for certain parts too, pushrods, rockers, lifters etc.... Mostly to get the max out of the cam and make sure everything lives for a decent amount of time, cheap parts cost more when they break.

If a long service life is what you need then that can be designed into the camshaft without a hitch.

BTW on most cams I can have them out the door to you in 1-2 days after the design. Some cores will take longer if they are not in stock. I have had cams ordered in the morning and out the door that day, so if you have a hard on to get a cam ASAP you could have it in a day or so.

I'm going to bet I can make you a cam that out does a 847 cam for your combination, unless by that rare circumstance the 847 cam is just perfect for your setup.

Bret

Bret@bauer-racing.com

 

Listen to Bret!

Rich Krause

 

Hey Brett

It might have mentioned earlier but what ist he normal price for a custom cam and components from you. YUou can email them to me if you want Im just curious. I figure on eventually getting a set of Combination stage two heads and the 233/239 cam kit with it when I get them money, what would your input be on their reputation and performance of that set up. I figure on having all of the Boltons then as well.
Gonewiththewindfarm@hotmail.com

Thanks man,
-JOhn

 

secret springs would have been the prototypes I ran for testing last year..since they have a part number now guess they are no secret anymore..

 

Heres one set of track #'s from Joes cam with a spinning 1.69 60' 11.66@117mph on my first trip to the track with my new setup. No dynotuning, 3550lbs. raceweight and 3.42's. I have since swapped converters and will be back to the track very soon for some 11.40-50's @118-119mph. It also ran 11.68@116mph with a 1.66 leaving easy and a 11.72 shotshifting at 5800rpms on the very first pass.

 

I agree it does take alittle sense but, were talking also about getting sometimes every last once out of your combo. This means alot of factors go into the selection of the cam , spring, intake, volume of intake,convertor, trans,gear, weight of the car, desired goals. This I feel are the things that Guy's like Bret and Joe give you that the catalog readers don't. If you want your car to run well go with the off the self cams, but if you want to stand out and have a car that is diffrent then the massses then chose a custom cam thats specific for your combo this is where there experience shines.


Kevin

 

This is one of the best post's i have read in this entire thread.... Pretty much sums up everything....

 

Bro:
you are preaching a crowd who thinks bigger is better and lift is free horsepower. Good luck ever trying to get your point out here.

Its all in the combo and the research behind it, some pay for it and its done right, some just skip this stept all togeather.

 

You are making it sound like the nittos did nothing, do you realize how good a 1.57 60' time is, Taner only pulls in the 1.3 range running mid 9s. Nobody is saying that off the shelf cams are pieces of crap, just very very rarely are they matched for your combo, but in that car it is probably quite close. Still guarantee that if you had Joe or Bret (or any other good cam grinder) make you a cam you would pick up time/mph even more.

Like I said theres nothing WRONG with an off the shelf grind, it just everythings RIGHT with a custom ground cam!

 

Well i guess joe and bret should open a cam company and shut down thunder racing, cam motion and others if they are that great. maybe some of you that have experience with these guys should call a small company like cam motion custom grinds and let them know how good they are. i cannot see them not hiring a guy that can pick the perfect cam and make them plenty of money.

 

 

The one thing that is really really overlooked with custom cams is:

Cam motion, cmotorsports, nutek, most all those companys dont have TRUE custom cams. They are likely all XE grind compcams, with XE lobes and such, just ground in with different durations and lift.

Joe (dont know if Bret does) has his OWN lobe, he sells Steel billet cams, the only true custom cams. The cam starts from one ~2" chunk of cylindrical steel, and a machine grinds the cam out of that with every single spec that he says. CC cams will never come close to that, not even their custom cams. hell you or i could call CC and have them grind a cam to our specs, which would be the same thing as what nutek, cmotorsports and cammotion do.

Side note, Joes lobes are WAY steeper than XE lobes, but they still slow down enough before closing to be easy on valvetrain. That is a good reason why they make so much power...ie do you see any off the shelf cams or CC custom grinds running 9.70s NA in a 377 LT1????