Approx. 393.7 hp if the tune is dead on....

 

My guess is around 390, but I have never had this type build for and not really good with HP numbers

 

435 hp 450 tq

 

Jake
Thats what I'm wishing

 

I have a bud with a 383, and smaller heads/cam...he made 405/415 on the engine dyno...

Now realizing, like half a moron that even in your thread title you named rwhp. I guess something's a little high...me or the numbers I posted.

I hope I'm wrong...or right...or you're right.

Good luck tomorrow. Post results!!!

 

Well hope I'm alot higher than his, cause that would only put me around 330-350 rwhp, I would like to see 390 at least, but would be happier in the 400s.

 

Cam was in the 240's and dual pattern, on a 110...matched to a cheap set of ebay aluminum heads...making 9.6:1 and a 670 SA carb/airgap, with headers...peak hp was around 5800.

You ought to peak later and with more oopmh, at least that's what I think.

 

I think so to..

 

Those heads really take off after 500. Who ported them. 317 is pretty strong through a 2.05 valve. Also, 288/292 sounds like seat timing. What's the .050" duration? Also, what brand chassis dyno? Mustang, Dynojet, etc...

 

Its a custom ground and with what i was wanting to do, thats what he sent/ground. I ask the same thing 3 different times (kinda making him mad) but he ensured me it was @50. I then ask if he was talking about advertised duration, he said no. So I'm still in doudt. He said its basically a race came (or 700 lift cam) but with a 600 lift. I'm still not 100 percent convinced. I said I wanted to run the 1/4 as fast as possible, and did not care about vacuum or to much about street manners, but it does run pretty good on the street. Had them ported locally here in jACKSONVILLE NC. The springs that were sent are good for 700 lift, but have a 220/30 seat pressure.

 

Assuming it's 288/292 @.050 and not .288/.292 I would say it's really over cammed, especially for that compression ratio.

I'll guess 385-ish rwhp

 

400

 

Its .288/.292

 

INTMD8.. Just curious where did you get 288/292 verse the .288/292. I don't know really to much about came numbers, but is there a such number without the point .000.

 

Well those numbers would represent degrees of duration.

.288 would be, well, less than one degree of duration.

 

But you might be right on the rwhp, but I hope not we all want more. I would like to see something in the 400 range

 

Any idea on the brand of chassis dyno?

As far as the cam, I'm hoping for the best and thinking there's been some miscommunication between you and the cam grinder because that is a tremendous amount of duration at 50 for that motor.

Good luck with it! :thumbsup:

 

Not for sure on the dyno. I thought the same thing about the duration, thats why I ask on 3 different occasions, and even ask the engine builder to verify that was not adverised duration. He said the same thing everytime. But I plan on calling him again tommorow (sure he will not be happy) but I'm the paying customer. Will ask him to verify again on it.

 

I see so I guess the number would be 288/292.. correct

 

that is more than likely Adv. duration. im sure that any engine builder would know that if that combo had that much at duration the engine would not like it. if that were at .050 then that cam is way too big, comp cams has a similar solid roller its power band is 5200-9200rpm...umm l
with a cam that big youd need like over 13:1 compression, huge heads, sheetmetal intake and possible 1 or 2 dominators! haha then youre talking alot of power

 

if those cam numbers are right it will have a very short power band from about 6000 to 7200 by the time the heads and cam start to get running you will be out of carb. with 288/292 at .050 you need a 5500 stall and 456 gears to to get in the ball park. hope it works out and the cam grinder is wrong.

 

*If its going on a DJ248 dyno, I would say 360-370rwhp, 380-390rwtq.
*If it is a Superflow dyno, 330-340rwhp, 350-360rwtq in STPPWR numbers(not the DJ conversion numbers.
*If its going on a Mustang dyno, 320-330rwhp, 340-350rwtq.

This is all assuming the tune up is relatively close.

Good luck
:beers:

 

Surprised at all the low ball numbers in here... that combo should make good power if the converter is good quality and doesnt soak up the numbers. Also assuming 288/292 is advertised because 41 deg of overlap at .050 doesnt correspond to 288/292 at .050 unless its on a 125 lsa

IT should be WELL over 400whp but if the open converter may show lower numbers. I had less cam and head than that on a 383 and made 400whp/380wtq but it was a lockup style 3600stall in a 700r4. Open, it would lose 20hp or so

 

IT should be WELL over 400whp

My old 406 only made 400 at the wheels on a Dynojet; it had a 283° at .050" roller, but heads that only flowed about 265cfm. It ran 10.80's.

 

Well the dyne guy wants me to put a few more miles on the engine before he does a complete pull. He set the carb and pulled to set it to about 5000rpm said off that he sees it at least 400 plus also stated I will have around 28 percent drivetrain loss. The diverted is a huges 3500 and was flashing to about 3800. So I will try again meek week.

 

How many miles you have on it now?