well this is the set up im thinking on running in my 69 chevelle.
rpm power torque vol eff%
2000 173 455 80.6
2500 219 460 82.8
3000 263 460 84.0
3500 305 458 85.9
4000 344 451 87.0
4500 371 432 86.2
5000 384 403 84.0
5500 380 363 80.3
6000 359 314 75.2

the set up is a tpi 350
Wedge/Pocket Porting, Stock Valve Size
10.0 to 1 compertion
Large-Tube Headers With Mufflers
104224 crane.cam

i just want it for a good every day hauler and some track but i cant figure out one thing. I read that the heads have max vavle lift of .420 and the cam i have lift is .452 intake and .465 exhaust and all the cams i find have a larger lift the the head max. can some one plz shed some light on this for me plz. :confused:

Don't believe those DD numbers...they are WAY optimistic. 350's just don't make 455 ft-lbs at 2000 rpms. Unless you are running nitrous from just above idle. Heck, most 454's can't make that much torque at 2000 rpms.

What is the actual combo? Heads, cam specs, compression, etc?

Wedge/Pocket Porting, Stock Valve Size
intake 1.94 exhaust 1.5
compretion 10.0
induction 700 cfm @1.5 inHg
fuel gasoline
minfold tpi
Exhaust Large-Tube Headers With Mufflers
Cam Shaft High Performance Street
lifter Roller
cam spec 0.05 lift
int lift 0.452
exh lift 0.465
timing adv 0
ivo 0
ivc 34
evo 47
evc 7

Wayyy optimistic. I don't believe that DD has a TPI setting, just a generic fuel injection. The only time I have seen a TPI rev and make power beyond 4,500 rpm is when the TPI was replaced with a Super Ram or a Mini Ram.

My 496 made just under 500 tq at 2,500 rpm - I would be absolutely amazed if in the real world there was only 40 tq difference at that rpm, considering the 146 CID difference between my 496 and your TPI 350.

To use your cam you will need to machine the spring pockets deeper for a bigger valve spring. Large tube headers would be a bad real world choice for a mild engine.

Good luck, Thomas

forget the big tube headers they do nothing for your combo........i always laugh when i see big tube headers on those dd dynos make more power even on a stock motor......lol ....they would hurt you in the real world.........your lift figures on the heads are in stock form.......heads will have to be set up with better springs and checked for retainer to guide clearence and so forth........

im useing dino 2000 its the newer vertoin of ddd. We set up my budy 408 stroker that has been dinoed @535 horse the dino 2000 got 528. befor i started testing diferent combofs i ran a few of my friends motors that have bee dinoed and they where close also so i dont know all my budies where tested at the crank not at the tires. but oh well

I would like nothing more than for your combo to actually make the predicted power. No real world 350 TPI engine, built like you specified, have ever made that predicted power. That said, I do believe the desktop dyno to be valuable for comparing horsepower trends as you "dyno" different parts. All computer simulations are built around certain assumptions, depending on how closely your engine mirrors those assumptions will determine how closely the real results match the simulation.

The most accurate non-dyno "dyno" that I have ever seen is on modern fuel injected engines using a mass air flow sensor. Assuming a good air/fuel ratio from proper fuel trim, it is a simple matter to convert the measured airflow weight, in grams per second, into a realistic power figure.

Thomas