Please only reply if you have experience with the cam you are recommending. I do not want any guesses or speculations, I can guess and speculate just fine on my own. I want real experience answers here...........


I have edelbrock performer centerbolt heads, edelbrock TPI base, ported SLP siamesed runners with matching plenum and 52 mm throttle body. Also headers and full exhaust. Also have 1.6 roller rockers.

So........ Which cam would you recommend. I want a fairly normal idol (some lumpiness is OK), good vacuum, and decent gas mileage

I am looking at the Crane cam 2032 (P/N104224) 214/220 @ .050" with .482I/.496E lift w/1.6 rockers. I think this cam would be great and very streetable. It is close in specs to the stock one which means the computer tuning would be easier.

The GM hotcam and GM P/N 12370845 look good, but the 12370845 would have too much lift with the 1.6 rockers. And HOW DOES THE ENGINE DRIVE WITH OVER 0.500" LIFT???? I also do not want to have to tune forever to get the computer right.

Please tell me what you think

 

the accel/lpe 74219 works well for a stock TPI engine. the advanced
flow will only be hampered by the TPI. to extend the rpm better
into the 6000rpm range look for a short runner manifold.
check spring spec on lift maximum.
LPE 74219 219/219° @ .050" .560 w/1.6 rocker
LPE 74219 219/219° @ .050" .525 w/1.5 rocker
the LT4HC is a good cam, but youll have to do some serious flow
work to optimize the cam and gears! its best used in a short runner
manifold. for power and drivabilty a single pattern cam would
treat better to off idle power to WOT. the split pattern are more
top end oriented.
airdeano

 

Yeah...what he said . I'm a big fan of the LPE 219 cam. I've put them in 2 TPI cars and they've run beautifully. A little lope which is always good. The comp cams 302 (i think) is a good choice too. 211/219 .510 I belive. If you want something a little milder, you can always go with the ZZ4 which is 208/221 .476/.510 that will keep the power a little bit lower and you won't need too high of a stall convertor or intake mods to benefit from the useable power band.

 

What do you guys like for those of us that are blessed with non-roller blocks?

 

Retrofitting a roller cam kit for pre-87 blocks from Competition Cams.

 

I have a ZZ4 short block with trick flow heads, edelbrock base, ported plenum, stock TB and stock runners. I am running the XR276HR cam, well is it s custom grind with more aggressive ramps but very similar to the 276. I also have 1.6 rockers which makes the lift about .510/.535. The car does run pretty good but with the chip I have it runs really rich at idle. It pulls realy hard to about 5000 rpm. Could use some better runners though.

 

The ZZ4 pulls REALLY strong in a mild TPI 350. A "true" LTR TPI system. The whole point is a cam that builds power where your engine makes it...not buying a cam that causes you to buy another intake / induction setup...but that's just me.

Even without the 1.6 rockers, I've personally driven a TPI ZZ4 350...stock runners at the time, stock plenum, stock throttle body, and a slightly cleaned up stock intake. With headers and a good exhaust system AND an ignition setup in good condition, it idles VERY smoothly ( for TPI ) with no real "lope". It runs very well on the stock chip, but there IS some power waiting after tuning. Mileage stays good as well, and the computer never even missed a beat after setting minimum air, TPS and letting it "learn" a bit after install.

Motor pulls VERY hard from IDLE to about 5200 RPM. I drove the car before and after JUST the cam change and I was impressed.

I still believe that one of the main reasons that people tend to think bad of the LTR TPI is the fact they don't taylor all the other mods to work where the TPI does the most damage

Like the old farts used to tell me a long time ago...

You can EASILY "over" cam an engine....and everything else after that is just tryin' to make up for it....


HTH

 

I ran a Lunati 218/224 .489/.502 cam when I had TPI & then again later with a Super Ram. It ran 13.8 with the TPI & 13.2 with the Super Ram. I ran Hypercrap chip with TPI & an Ed Wright with the SR. Both idled smooth & drove well.

 

I have been using the TPIS ZZ-9 cam for about a year now and I am happy with its performance. THe drivabliity is very good, off idle response is wonderful. Part throttle mashing also plants my *** in the seat. I do run rich though, my injectors are too big for how I normally drive.

However I am never satisfied so I am pulling my motor right now to rebuild it with lower compression and a Comp blower cam. I will be switching to the HSR and porting my heads. Next stop, forced induction...

 

Ok, let me rephrase:

How about us guys with flat tappets that don't want to **** $800 away on a cam swap?

 

Everything ctandc says about the ZZ4 cam is true. It idles nearly like a stock cam but makes a tremendous amount of useable street horsepower and torque. I had the TPI setup on my ZZ4 before I switched to the MiniRam and between about 2800 and 4500 rpm the amount of torque was astonishing- had to have been well over 400 ft-lbs. The best thing about it was the sleeper nature to it because of the very smoothe idle. Minimal amoung of tuning over stock got the job done. Tuning on the MiniRam is a different story though.

 

Cams with the same duration as the rollers we just mentioned would be fine.