Ok I would just like it if someone could plug my engine into Desktop Dyno and give me the rated horses and torque or e-mailing me the picture of the curve would be awesome. I am guessing about 300hp on this setup and would like to see how far off I am.

It is a stock 1977 350 2 bolt main. 194 heads
the headers are summit 1 5/8" primary tube headers
the cam is 465 intake and 488 exhaust lift and durations of 282 and 292 respectively (hydraulic)
intake is an edelbrock performer
carb is a rochester qjet (750 cfm?)
If there is anymore info that you need I can give it.

Thank you,
Brett

Compression?

I'd say 300 is pretty close. The Performer package is good for about 275 on an 8.5:1 350. You're cam is a bit bigger.

David

Thank you sir, I must dl ;) Desktop Dyno then and plug in the numbers

Engine Power Torque
RPM (Fly) (Fly)
2000 136 357
2500 171 359
3000 205 358
3500 252 378
4000 284 373
4500 304 355
5000 308 323
5500 287 274
6000 254 222
6500 212 171
7000 170 127

Engine Power Torque
RPM (Fly) (Fly)
2000 136 357
2500 171 359
3000 205 358
3500 252 378
4000 284 373
4500 304 355
5000 308 323
5500 287 274
6000 254 222
6500 212 171
7000 170 127
Yeah, I'd agree with that. Sounds about right! :thumbsup:

I got pretty close. I guessed on some of the inputs (compression and camshaft lobe seperation)

http://www.hotrodink.com/Images/data/546/4gdsmack954.JPG

Thank you very much for all that info. I didn't realize it would make so much torque at low rpm :D

Next I would like to see what would happen if I upgraded it to a 383 with 2.02 edelbrock aluminum heads if anyone feels like punching that one in.

if you don't want to spend a lot of money but get a noticeable gain in peformance, dump the qjet for a something decent. IMO, what is hurting you most in this combo is that you have a oversized cam for what your heads will flow. if in fact they are bone stock 194's. it's not way out of line, but more cam than you can trully utilize with stock run of the mill 4 bbl heads. the result is your power band is very narrow. i.e. you cam hurts you quite a bit in term of HP until about 2000 rpm, then it's start to grab on, but, as you approach say 4500 your heads won't flow enough to take advantage of your cam. so that's your power band, 2000-4500K.

Well I just got it started today...I am thinking about getting one of my Qjets rebuilt since they don't seem like they are that great. One wouldn't deliver fuel to the engine and the other won't idle (i'm going to try and mess with it now). Other than that the engine fired right up with the 2nd carb and was nice and loud in my garage with open headers :D

Now if you are opposed to the QJet is there another reliable spreadbore carb...I like the way the secondaries kick in on the spreadbore it's a sweet sound.

if you don't want to spend a lot of money but get a noticeable gain in peformance, dump the qjet for a something decent.

I disagree... changing the carb won't make a hill of beans difference, not at WOT anyway. I run a Q-Jet on my small block that puts 345 to the rear wheels and runs 12.80's in the 1/4. IMO he has the perfect carb on his car, so long as it's set up right.

gdsmack, check out Sean Murphy Induction if you want a nicely built Q-Jet set up right for your engine. I'm sending mine back out to him next week for some tweaking.

well i have a local rebuilder that will do the carb for 100 and has a good rep. My father's friend has his done their and they are bolt on and go. I just put up another post in this section about my current problem...I have the engine running but the timing won't stay.

I have a similar engine (smaller cam, 206/212) and it is knocking on the 300HP door. It took at lot of trial and error messing with ignition curves and vac sec. springs for the Holley. In all honesty the car has been consistently faster with the 750 (3310-3) Holley than it ever was with the 600cfm Holley, so even near-stock 350s like fuel and air.

That said, I think a Qjet could easily handle my engine and then some. Qjets that are "in shape" and tuned to the engine can work great. Think about it guys, Qjets were feeding up to 330HP (402ci) Chevys and all of the High Output BOP 455ci stuff.

The key words are "in shape" and "tuned" though. I bolted at 750 Holley on and went faster but at the cost of very rich idling and cruising, it made power untuned and operates smoothly but I hate the fumes. If I were to do it over again I'd get a Qjet tuned to fit the engine's needs and it would deliver the HP at WOT and idle/cruise much cleaner than the Holley.

I love the simplicity of a Holley and I can take them apart, put them back together and cure most stumbles on them. However, at my power level, I wish I had chosen a Qjet because it would be well within an operating range where it could feed my engine AND run relatively clean.

well i messed with the carter qjet I had on the car temporarily. I ended up finding out the upper gasket was junk and now it pukes fuel out of the top center of the carb. This is either because I didn't put it back together correctly or because of the junk gasket. Either way it doesn't matter because I'll have my nice rebuilt Rochester Qjet in a week or so. Just found out my water pump is weeping so i'll need a new one of those too :mad: so much money. What can you do though the car is worth it.