Help picking cam ?

[insane6]

TE-67 (John Craig)
65 inj.
Ported stock heads (stage 3) 1.77/1.50 valves (VPE racing)
Ported intake( VPE racing)
3400-3500 stall 9" cutom billet( Century by Mike Kurtz)
Stock long block (96000 miles)
Looking for something that Idles smooth, pulls good vaccum, quiet, and pulls hard. Roller or flat tappet
Any suggestions ?

[jasjamz]

I'm going roller no more flats for me!! Motor should be done in about a week and a half. Billet Comp Cam. 212/212. I'll let you know what happens.

[VadersV6]

The stall you picked would be a poor match for a cam with good idle characteristics. You could go with a higher duration cam to match the stall, but make sure it has a wide lobe separation to keep overlap to a minimum. Your mph may be down cause of that converter. When you get to about 210 degrees duration, you start losing the smooth idle and high vacuum...well thats about the starting point. But overlap has the most to do with that. Bad thing about reducing overlap by going with wider lobe separation, is that the duration has to go somewhere. Now the intake closes too late after BDC and you bleed off cylinder pressure. Now you have crappy bottom end torque.
You can get some effects of a bigger cam, yet retain a smoother idle by going roller.....since rollers have more radical ramps. The valves spend more time at higher lifts. I would go with a smaller stall (2800-3000) if I were you and go with a roller in the neighborhood of 210 @ .050.

[Blown&Injected]

stock, 204/214, 224/224, 218/212 all idled about the same - don't worry about it. The bigger cams just take a bit longer to clear up as in very low rpm light throttle cruise conditions.

That said, the roller spends more time at higher lifts and you do not have that #3e wipe threat

[83ttypecooled]

Hi,
Yeah, I keep hearing about flat tappet problems with aftermarket cams, like wiped out no.3 exhaust lobes. I guess I would have to defer to those with more experience, and say to go roller. I understand a stock cam will take you into the low 11s or better with the right setup.You have head work, a big turbo and lots of injector, try mild. Isn't that converter a hassle, or do you run it on the street much? My Kurtz red stripe is 12", only 2800 stall. TCC is messed up, and I miss the lockup. I'm totally street, the car never sees the strip. It's agravating to see all that slip in 4th. I guess emissions are not a factor for you, huh?

[insane6]

Originally Posted by 83ttypecooled

Hi,
Yeah, I keep hearing about flat tappet problems with aftermarket cams, like wiped out no.3 exhaust lobes. I guess I would have to defer to those with more experience, and say to go roller. I understand a stock cam will take you into the low 11s or better with the right setup.You have head work, a big turbo and lots of injector, try mild. Isn't that converter a hassle, or do you run it on the street much? My Kurtz red stripe is 12", only 2800 stall. TCC is messed up, and I miss the lockup. I'm totally street, the car never sees the strip. It's agravating to see all that slip in 4th. I guess emissions are not a factor for you, huh?

I'm leaning towards a roller (212-212) , I just don't want any problems with the swap
The converter I use works good on the street , at the track it flashes to around 4000 rpm at 8 #of boost and drops about 600 rpm between shifts i guess that's in line as far as slippage. I run mostly 1\8 mile (no rollbar)
I have had several people tell me the stock cam is holding down my mph ? As far as emmisons I have been lucky the last couple of years

[83ttypecooled]

Hi insane,
I'm out of my element here,but what goes in, must go out, and I could see where a stock cam would hamper you at the level you have reached. Talk to a cam grinder. How about Comp? They know their stuff.Deer Park, huh? Do you own a TTA as well?

[Quick6'n'-K.C.]

I would go roller...but if there isnt anything wrong with the cam you have now, then id almost leave it.
Your talking 800 for the cam,lifters,valve springs plus a double roller timing set, and then opt for the Roller Rockers.

I found something out tonight, my heads that are ALREADY on my motor need to come off to fit the T&D roller 1.65 rockers...grrrr

How well was the intake ported?
Is there anything else other than the cam that you can upgrade?
The loose non lockup convertor is eating 3 mph of your top end.

I have a 3500 convertor in my daily driver, its a lockup so i dont have any hassles with it, just keeping tires on the back of it!
BW

[Marc87GN]

Originally Posted by insane6

I'm leaning towards a roller (212-212) , I just don't want any problems with the swap
The converter I use works good on the street , at the track it flashes to around 4000 rpm at 8 #of boost and drops about 600 rpm between shifts i guess that's in line as far as slippage. I run mostly 1\8 mile (no rollbar)
I have had several people tell me the stock cam is holding down my mph ? As far as emmisons I have been lucky the last couple of years

I spoke to Jack Cotton a few days ago and I'm going that route as well. I have a good setup and I'm determined to clean up all of the weak spots this year. I'm going with the 212/212 and roller rockers from him.

[insane6]

Originally Posted by 83ttypecooled

Hi insane,
Deer Park, huh? Do you own a TTA as well?

No but, maybe you know Frank he has one in Deer Park.

[insane6]

Originally Posted by Quick6'n'-K.C.

How well was the intake ported?
The loose non lockup convertor is eating 3 mph of your top end.

BW

Well, not a expert but the intake sure looked good to me
VPE racing did a good job in my opinion
I have a lockup convertor too , I did not make that real clear.

[talstar]

Go with a roller! I just wiped out a 6,000 mile motor with a flat tappet.

[83ttypecooled]

Thanks, talstar. My motor is out, been trying to decide what to do. I think I will go forged pistons with a stock bore. Your thoughts?

[insane6]

Originally Posted by talstar

Go with a roller! I just wiped out a 6,000 mile motor with a flat tappet.

I think I better go roller