3500 head max lift

[3400-95-Modified]

Ok how does all of this sound...

Similar or exact match to stage 1 Milzy, but a regrind from a "new" cam
Stage 1 NA - .305/.308 lobe lift (.488/.493 valvelift),
209.4/213.1 duration,
110 LSA, 108 IC

26915 springs
105@1.8
293@1.2
1.085 bind

81-87 Toyota Land Cruser seats. Or LS1 seats modified to fit.
and Chrysler 318 seals, felpro SS72844

for reference the 2F engine code for the land cruser just means its a gas engine not desiel

Would it be wiser to use the 26986 spring since I can use the stock seal/seat? I would gain a higer seat pressure but lower open pressure... Just checking on if this is worth it with a cam of stage 1 style.

[bszopi]

You'd have to check with the company doing the regrind, but they may not be able to offset grind the cam to change the LSA (stock of 112). I've heard of at least one person having it done though, so a slight change is possible.

As far as needing a new cam, I don't totally agree with Aaron. Several years back, many of the cam companies wouldn't do a regrind on the hollow core cams. Nowadays, they all will. So I don't know if they've changed the way they are regrinding, or if they have just proved that what they are doing will not affect the intergrity of the lobe seating. Its your choice. Even with a new cam, it'll still be cheaper than the MMS cam. Oh, and Sealed Power makes them.

[SappySE107]

You need custom length pushrods with the MMS/Cammotion cams. You cannot achieve that kind of lift with a stock base circle as the lobes would be taller than the journals. Good luck fitting the cam in that way. The MMS cams are about .050 smaller on the base lobe for the stage 1 cam. I have it on ebay for sale right now.

The bronze aluminum cam gear is ordered (I ordered 2 of them). After I verify they work for gen 3, which shouldn't be an issue, I will have them on the store. Price is going to be about 90 bucks plus shipping.

You can grind it to a 114 LSA with .480 lift but that is all I know a the moment. I am hoping the place I sent them to can give me some specs to range from and simulate.

GM does not use a bronze gear in any iron cam engine. There is no reason to. That is why there is a problem.

"Made from premium aluminum bronze

alloy, these precision machined gears are
highly recommended for performance cam
applications and are mandatory when running

8620 steel billet roller camshafts."

MMS sells stock length pushrods with their cams but they won't work properly. They don't tell you that your cam gear is now incompatible with the stock oil pump drive and he doesn't post in any threads that it gets mentioned.

I am planning on offering some regrinds once i know more. If I can have them shipped direct to the customer from the grinding place, that could save on some shipping charges. If so, I can probably price them around 325 plus shipping. I have been thinking about getting a setup to make custom length pushrods as well but in order to know what size you need, you really need to test it. Decked blocks and heads along with the cam regrind speces will change the optimal length for each application. It should be possible to get something really close for a range though but I would need to have measurements from more than 1 or 2 engines to make that decision.

[AaronGTR]

Sealed power, thats the name. Thanks Brad. I know you guys have said that they can regrind the stock cams now, but I still don't think it's a very good idea. Why cheap out on an important internal part like that when you can get a better cam for cheap? Sure it's a little heavier but the weight increase would have minimal effect on performance and personally I'd feel safer knowing my cam would have no flex or twist distortion and that the lobes are staying in place under hard running conditions. Just a peace of mind issue I guess.

I didn't know milzy's cams had a smaller base circle. Of course, mine is a stage1 boost cam so the specs are a little different and I already had custom pushrods and adjustable rockers when I installed it so I probably wouldn't have even noticed. Still good to know. I'll keep an eye on the bronze gear issue too. I might need one if they work. I'll be digging into the engine in the spring so I might as well replace it.

[3400-95-Modified]

Why did you post that cam so late... Now I can't stay up and snipe it... DAMN...

That ends at 5:04 AM.... Hrmm maybe I can get up really early and grab it...

I hate e-bay.

I'll buy your cam and then when my machinist finishes you'll buy my egr adapters... Money floating around back and forth... haha. I'll double check with him tomorrow on if he can do them over the weekend or not.

[SappySE107]

I think I was just going to bed when I posted that:P

I won't have the gears until wednesday next week at the earliest. I want someone to check out their oil pump drive gear...namely xonelith since he has 60k miles on it (wtf?).

[CNCguy]

Cammotion told me that it is an intermitent problem primarily with GM engines. Since is isn't consistent, I wonder if it is due to manufacturing tolerances in relationship to gear engagement.

[3400-95-Modified]

At least it's a somewhat easy part to check and replace if your unsure on it lasting or not... you could run it for a few thousand miles and then check its wear pattern, or even earlier, depending on how long you trust it.

[3400-95-Modified]

Well I bought your cam ben... Now let me know if that bronze gear works because if it does I'm getting one too... just to be safe. Should I just go with the 26915 springs now too since its only a stage 1 cam?

[SappySE107]

If the 3500 springs are stiffer than LS1, you might be able to use them with the cam. That or LS6 springs anyway. The comp springs would work but would cost a bit more and for a stage 1 cam you don't need to go ultra stiff on the spring anyway.

[3400-95-Modified]

according to the specs a 3100 has 75lbs of force and a 3500 has 77lbs... the comp springs are only ~$150 and provide a 105 seat pressure... I sent a e-mail off to my race car engine builder to see what he suggests.

[SappySE107]

LS6 springs are 65 plus shipping. The comp springs I have on the store here will work with the stock seats/seals but they have higher seat pressure than the ones you are looking at. They don't have as high of a spring rate though.

[3400-95-Modified]

I guess I'll get the LS6 springs then.. no need for overkill...

[AaronGTR]

The LS6 springs and the comp 26915 springs have very similar specs. I'd just go with the LS6 springs for the price. They should be plenty for a stage1 cam, but I wouldn't trust it with stock springs.

[3400-95-Modified]

Cam ordered, obviously... LS6 springs orderd, I have chrysler 318 valve seals, DHP ordered from PFYC, and now I just need the spring seats... Toyota I guess for no grinding, but I can't find them.