Hey all, I was wondering if anyone could give me a ballpark estimate on how much HP I may be making......

350ci, .040 over;
CompCams Magnum Roller 286HR .560" lift, 286 advertised, 230/230 @ .050";
Dart Iron Eagle Heads 2.02/1.60, 64cc chambers, 200cc runners;
Edelbrock Performer RPM Air-Gap;
Speed Demon 650cfm;
HEI, MSD 6AL;
Hooker Super Comps (1 3/4" primarys);


Thanks!

CR ?

10 to 1.


Thanks!

I'm guessing the 440 to 460 range.

Thank you!

Arron,

You really think 440 to 460 out of a 350, that seems a "bit" high to me.

Fred.

400-425

If the tuning is perfect...and the dyno operator is generous..400HP Max. Most likely around 360-370, which is big HP. Consider that GM with all of their knowlege and money made 380HP with a 12-1 solid lifter 350.

SS4speed,

I dont't know really. I'm just guessing at what he posted. I'm not a expert by any means, really am a novice. Having said that and admitting I am a novice, I have seen some small block 350's at a local dyno shop put out 450 horses. There combos are very similiar. My local shop has dyno about 32 zz4 motors and every one has anywhere from 340 to 355 horse at the crank. One combo I saw was almost identical to his except he had some AFR heads and that thing had 443 horses at the crank. Thats a 350, not a 383.

I have also seen some chassis dyno 350's with very similar combo's have around the 430 to 450 horse range. Go over and look at some of the Edelbrock crates, Sallee Chevy custom crates and other vendors. Granted they are out to make money with advertising, but some are very legit.

450 horse is not out of the question on a 350 small block based on what I have seen in the last year.

Aaron,

I guess, but I didn't see anything listed on rods or being balanced, etc., so I expected the RPM would not be over 6k or so. That's why I thought the HP rating was a bit high. Now that I think of it, I have seen 383's make 480 hp at a bit over 6K at 10 to 1. Plus I've seen 383's make a lot more (over 525) with an increase in compression and heads, so I guess maybe your closer than I originally thought.

Fred.

Fred

That is a good point about the rods and crank being balanced. To truely know we need more info on the machine work and what not. Could be as low as 350 horses and as high as 450 horses.

Hey Guys,

Thanks for all of the input. The bottom end is actually just a Jasper rebuild. I usually take the motor to 6k and occasionally it has seen 6500rpm. I too am a novice and was thinking 400hp or a bit more. I would think more than 350hp though. The motor (top end at least) is built well and I do have it tuned pretty darn well.

I would like to dyno it, however it may not be until spring time now. Any other input would be greatly appreciated.

Thanks!

Is the Magnum roller a a hyd. one? I believe that is a retro-roller. Do you have good springs? My understanding is that hyd. rollers get into valve float around 6000. Do you have a rev kit or anything like that.

It is a hyd. roller. I believe springs are Comp cams, but not sure of the details. Also have Harland Sharp 1.5 roller rockers. As for rev limiter, I have a MSD 6AL with the 7K chip installed....but I've never taken it past 6500....I don't trust the Jasper short block that much! :)

I did not mean a rev limiter, but a rev kit. Rev kit helps hyd. rollers rev better.

Im running the same setup on my 388 with a little more comp. 10.2:1 better intake and sollid lfter cam with a750 double pumper same heads and headers balanced with 6'' rods this moter made 422hp and 448tq and have the dyno sheets to prove it and that was after 25 runs to find optimal tuning. I would say that the setup you descibed would net you 300-350hp and close to equal torque.