Which cam do you have, & how do you like it? I'm trying to pick a cam for my GTA, & I've gotten to the point where I would appreciate some "real-world" feedback.

Ideally, those that respond would include a quick rundown of their entire pkg (i.e. which intake, heads, tranny, gears, etc. you're running) so I can see what works well with what, but any practical/pragmatic feedback would be appreciated.

Thanks guys.

read the sig. i wouldnt recommend this for any tpi intake. revving it too 6grand is a lil much for those long runners.

I'm running a comp cams XE262H, which is about 1 or 2 sizes smaller than TraviZ, and I would agree, its powerband is still too high for TPI.

If I were to get a new cam, I'd get something with specs similar to 212 in / 218 exh Duration @ .050", .449 in / .456 Lift with 1.5 Rockers, and an LSA of 112.

That'd have you making power right off idle till 5200, which is perfect for TPI. Wouldn't cause issues with a rich idle either, as the cam's LSA is wide enough to keep your valve overlap done. Wouldn't have that lumpy idle sound, but she'd perform the best with a stock like intake.

The 262-H cam I have I'd reccomend you install into a vehicle that has a super ram, LT1 intake or such. It flows from 1300 through 5600 rpm.

Thanks guys, I appreciate the feedback.

I'm not at all worried about powerband for an LTR setup, as I'll be using my HSR intake with AFR 195 heads. I think that the main thing I'll be looking for is the flattest torque curve possible, and the most torque "under the curve" that I can manage...

Also, part of the reason I'm posting this is to ask "How do you like the cam you have?" & "What are it's driveability characteristics?"

Thanks again!

I run a solid roller cam 248/248 @ 0.050 lift with 615/615 lift. I have a miniram on a 406 motor. Heads are AFR 210's and compression is about 11.8:1

This runs through a very unhappy 700r4 with 3500 stall and a 12-bolt rear with 4.11's

Exhaust is Hooker Super Comps to Muffllex 4" system

This is a decent cam for a miniram. Apparently they liek single pattern cams. Not sure about the HSR. For a fun street driven car I would stick with duration in the 230's and lift around 575. That would probably be the max. Mine idles good and uses power brakes and 93 octane fuel, but a LOT of this becuase of the tune.

It really comes down to what you intend to do with the car.

As far as driveability of this setup, its fun. Converter is a little loose for the street but it works well with the 4.11 gears. Turns a lot of heads and puts a big smile on your face when you lean on it. Cam is a little choppy at lower RPMs. Its power band is 3500-7500. Again I would go with a cam in 230's to bring the power band down to a realistic range (2500-5500)



Hope this helps.

Thanks, I got a good laugh out of that!

Well, I've posted about that before (& I really ought to go back to that post & update it), but I'm hesitant to go into it, because as soon as I bring it up, all of the answers stop - apparently almost no-one here has any hint regarding what might work well for this...

It does indeed help (thank you!), & is exactly the kind of response I was hoping to get. Sounds like a seriously fun, kick-@ss combo!

If that is what you are looking for, then I would suggest the LPE219 cam. In all of my combos using engine analyzer, it always gives the highest avg torque of all the off the shelf cams. You might give up 5-20 hp up top, but this hobby is a trade off, you can't have the most hp, most tq, best mpg and best driveability all in one. Driveability is very good, I passed emissions with it, got good gas mileage, easy to tune, and in a 350 it will rev to 6 to 6.2k. Run it with the 1.6 rockers.

I have e 355 engine with an LT4 HOT cam (218/228 duration, .525" lift with 1.6 rockers) and heavily ported SLP runners and Edelbrock manifold, along with Trick Flow 23-degree heads, 700R-4 tranny with a 2200 stall 12" converter, and 3.42 gears in back. I have my idle usually around 750-800 rpm in Drive, have been able to get it to idle even lower, but it wants to stall going from Park to Drive at that point. The car is very driveable (daily driver except in snow), passes Maryland's treadmill emissions test easily with just a cat and PCV valve (no EGR or air pump), and screams to 6300 rpm with a hp peak around 5300 rpm. I'm about to install a HSR to boost the top end power, but I expect the torque won't drop off much and it'll still drive the same.

Greg, thanks for your post, that too is just the kind of thing I was hoping for...

Sounds like exactly what I'm looking for, but the lift numbers have me just a bit nervous...


A quick bit of algebra shows me that they'd still give me .525" lift if I went with 1.5 rockers (which was my original plan - I'd prefer not to screw around with my pushrod holes, & I'm really a bit leery of piston/valve contact...).

Is anyone here running the LPE 219 cam with 1.6 rockers on a stock L98 shortblock?

Still... The thought of .560 lift is pretty bad-@ss!

Yeah, that's a "sacrifice" that I can easily make.

Just got off the phone w/ LPE, & I'm giving some real serious thought to this one...

And again -

I wouldn't worry about your piston/valve clearance unless you are running a tight quench, like less than .040. Mine is .041 and with .604 and .608 lift I still had plenty of room left for more lift(like .125). You also have the valve reliefs in your pistons to rely on, and it's the duration plus the lift plus the overlap that will get you into trouble on piston to valve clearance.

You will be fine.

Well, for me, I can't really talk much about how it performs, since I have the engine in a 1 ton 4x4 truck for towing. I personally would perfer less cam, for more low end torque.

However, it idles fairly smooth at 750 rpm, and once you hit the magic 1400 mark, it pulls very hard clear up till the TPI runs out of breath.

unfortunately i dont have all the numbers for the cam i have, but by hearing the car run its a descent bit more loapy than a stock cam would be. i have a 305 MAF, stock heads, 3.23 rear gears. everything else is pretty much stock. i had to tweak my iac so it would idle, but other than that i still have plenty of low end torque and in runs like a raped ape at wot. id say get a set of headers to go with the cam if you dont already have em, they really help the engine breathe easier in higher rpm.

http://www.zieglerdigital.ca/public/...MC-TPI-Rev.wmv

Here is what mine sounds like at an 875 - 900 RPM, with a few 2500 RPM revs

CCA-12-262-4
Basic Operating RPM Range: 1,500-5,500 RPM
Intake Duration at 050 inch Lift: 218
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 218 int./224 exh.
Advertised Intake Duration: 262
Advertised Exhaust Duration: 270
Advertised Duration: 262 int./270 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.464 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.470 in.
Valve Lift with Factory Rocker Arm Ratio: 0.464 int./0.470 exh. lift
Lobe Separation (degrees): 114
thats what i'm putting in my 305 with headers and 1.6 roller tip rockers... don't know what time i'll do...hope to run low 14 to high 13...