Thread: 383 build

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Originally Posted by brattrw

I have a 350 bored.30 over, new balanced rotating assembly from eagle, should be about 12:1 compresion, Dart Iron Eagle heads (215 58cc chambers), cam with .555 intake and .578 exhaust with 301/308 duration and 106 lobe seperation, Victor Junior intake (2 inch spacer), and 750 double pumper (70 main jet and 80 secondary I think). Will be running VP racing fuel.

I do not have access to a dyno so... is there anyone here that can guesstimate an HP for me? I am hoping for 625-650.

If you'll post the cam timing numbers (intake open, intake close, exhaust open, exhaust close @0.050" tappet lift) and the head flow numbers from 0.100" through 0.700", I'll run a DynoSim for you.

Id say about 100 less than your orginal though 500-525 range. sounds like a sweet build though.

here is another Desktop Dyno 2000 cam files nothing to download
http://www.smokemup.com/utils/cams.php

Originally Posted by techinspector1

If you'll post the cam timing numbers (intake open, intake close, exhaust open, exhaust close @0.050" tappet lift) and the head flow numbers from 0.100" through 0.700", I'll run a DynoSim for you.

I think these should be close to the head that I have.

.200" 146/114
.300" 206/161
.400" 255/191
.500" 288/209
.600" 304/216
.700" 309/220

Here are the cam numbers that I have:

.050 Intake open 22 BTDC Closes 58 ABDC
Exhaust open 63 BBDC Closes 27 BTDC

Lobe C/L 104 ATDC Duration 260
108 BTDC 270

Thanks everyone for the replies. I am thinking that the 500 -525 range is probably right. So I'll be looking for some more HP to squeeze out of it.

Ran this with 1 3/4" long tube headers, tall dual-plane intake such as Edelbrock RPM or Weiand Stealth.
RPM HP TQ
2000 113 298
2500 154 323
3000 182 337
3500 253 379
4000 328 431
4500 404 471
5000 468 492
5500 506 484
6000 535 468
6500 547 442
7000 540 405
7500 531 372
Peak volumetric efficiency 102.7% @5500
Peak BMEP 193.8 @5000

Thank you! Much appreciated. That's a lot short of where I want to be. Looks like I have some work to do.

by the way here it is: