guess the hp of my new and improved 496 bbc ????????
 

Hey guys back again, I asked the hp of my previous 496 a couple of months ago and got some great answers.It was not as much as I expected
Well the welds broke off of the pan oil flap and got caught under the pump and lost oil pressure, it hooked a bearing, but I shut it down with mininum damage. Here is the new and improved version of my 496
gm block .060 over
13.4 to 1
dart 345's some bowl work, took .040 off the bottom to bump the compression
full roller (cannot tell it all) but around 725 lift both in and out
283 @ .050 at 110
single 1050 dominator on a port matched 454 intake
What do you think ?
Not dynoed yet , just done so we will find out soon. Going in the end of this week or next should be dynoed by oct 18 th

LOL<---sounds just like my motor---> so I'll say 750hp +/-50

What brand of dyno are you going to dyno on ?

x2 Pretty much my last set up. Made 756 hp at 7000rpm. Actually ran a quick fuel 950 not the dominator

I'm guessing 850-900 hp. I had a 69 Camaro with almost the same set up and a 200 shot of nitrous and it made just on 1100 hp on the dyno.

the type of dyno we wiil be using
 

The dyno we will be using is a chassis dyno: model/make-
Dyno jet 248 HS
measuring RWHP
and using the 25% rule for calculating motor/flywheel HP

[quote="chevyfireball"]I'm guessing 850-900 hp. I had a 69 Camaro with almost the same set up and a 200 shot of nitrous and it made just on 1100 hp on the dyno.[/quWOW !!!!thats a pile of hp for that setup. Very well could be wrong but but that seems like alot. I have a 565 that pulls 894hp at 6750rpm with a cam that is very similar that was dynoed with a 1150 dominator.

hp
 

Yea
I would like to see those kinds of numbers, but I do not think it will be there.
My personal feeling w/o hearing it yet 775 (+/-) ????
But more is always nicer

Re: the type of dyno we wiil be using
 

550 RWHP

hp ????????
 

I think 550 RWHP is a pretty good guess, but I would like to see closer to 600 RWHP.I will let you guys know, I should get the motor in this week and maybe dynoed saturday, we will see

Didn't see the RWHP bit. My guess was at the motor. What do you take off... 23%? so we're looking about 650-700 RWHP.

news about the 496
 

The BBC is in the chevelle, runs great, here is the good and bad news. We could not get a good HP reading beacause it kept hazing the tires. No valid numbers yet. It maybe a little while beore we dyno it again. It had street tires on it so the slicks will need to back on it .
Keep you posted
Jeff

BBC quesstimate
 

I was talking to Mike @ High Speed and his motor builder, we are pretty comfortable to say the motor is 785 HP. Using the 25 % rule that puts it at about 599 RWHP which means we will need to put this bad boy back on the dyno to know for sure, it is too close to 600 not to know. But HP does not always win races and make good ET's , accleration and reaction time and weight how the car holds the power and chassis's and a whole bunch of other things, convertor gearing. This is good strong quick revving BBC and thats good ............ blah blah blah
Remember it hazed the tires so no valid number yet, but I do believe this is a good estimate