StraubTech

I don't have all the details yet just a text that says 671HP at 6500 rpm. Chris this thing is amazing!!!

Pump gas 10 to 1 engine
Vic. Jr.
AFR305 Box stock heads
Straub Custom Solid Roller
Morel Ultra Pros

I promised them 630 to 640HP. I missed it again!

I will post the rest of the numbers when I get them.

diehrd

Thats is kick **** power !! good job

pauldana

cant wait to get my chassis dyno!!!!!

StraubTech

590#/ft at 5000 rpm

qwank

want

roscobbc

Wow Chris that is 'significant'
It will be very interesting to understand 'drivability' of the combo

3JsVette

.......and idle quality

509 rat

cam specs.

69427

gkull

Very early in my accounting classes I heard a good saying:


Figures can lie and liar's can figure

69ttop502

Amazing Chris! Can't wait to hear the details.

Bill

StraubTech

this engine is located in 6' of snow country right now. It will be in a 4 speed car.

StraubTech

It idled very well per the shop. Started with 1/4 turn and purred at 850 rpm. No vacuum reading.

This engine shop has used my stuff for 5 years now. Everything that has come off the dyno has run the number.

StraubTech

650/610
252/256
107 Sep

StraubTech

So what is your point?

gkull

The point is: I know that you only made the cam and some engine builder built the motor and “Dynoed” something and then they relayed the info to you and then you posted the claimed results. I don’t fault you, every salesman has to be a good promoter.

Recently on here some guy was so jazzed about his “Dynoed” BBC that he posted the videos. The problem I saw was the motor on the dyno was not the same one on the next engine stand video. The dyno video had dyno uncapped headers, intake air bell, different manifold, carb, electric water pump……………………………………

So you are not even comparing Apples and Apples. Two different motors to get some bragging rights dyno sheet?

If I wanted to Mickey up a dyno run, I would also put an electric evacuation vacuum pump with about 20 inches of vacuum inside the engine and gain an instant 35 HP on these 600+ hp motors. Plus all the above items.

Then you tell the poor sap of an owner that his motor made 671 HP. When in reality he has 521 hp motor with all his pieces and parts with an exhaust system.

The easiest way to Mickey a dyno run is by inputting fraudulent weather data into the engine corrected HP and TQ numbers. Just add 2000 feet to the ADA from the weather computer numbers and the adjusted power readings go way high on the corrected power graphs

v2racing

Not to be a nay-sayer, but i wouldn't think purring at 850 RPM would be an accurate description of an engine with 252/256 duration at .050" with a 107 LSA and 40 degrees of overlap. I would think the cam would be quite noticeable at idle.

roscobbc

Before we start making doubting comments perhaps we should wait and see some more comprehensive dyno results from Chris's customer - I'm guessing Chris is simply passing on info relayed by his customer verbatim and will himself look to qualify the customers performance claims.
Perhaps 850 rpm idle quality is due to bundles of ignition advance at idle and some good gas?

v2racing

Isn't the purpose of this forum discussion? I said "I wouldn't think..." and "I would think..." in my post. I didn't call anyone dishonest or anything close to that! I voiced my opinion. I still THINK it would have more lope than purr at 850 RPM with a cam of those specs based on my 40 plus years in the performance business.

StraubTech

It's normal comments. If I paid every shop around the world that has dyno'd my stuff for better numbers I would be broke. For me the satisfaction is when you have well known engine builders that call you and say, "Chris I have had some of your cams on my dyno and I have been quite impressed, how do I get set up with you..." well that tells me what I am doing is above the norm. In the last 2 weeks I have had 4 engine builders call with varying degrees of that statement. One of which I have known of and respected for many years as he has done this about as long as I have been on earth. His test was a blown 540 CID going in a V-Drive. Stick is on the way.

I had another shop call me about the "house car". "Chris saw what you did with the big inch NA LS engine, impressive. Need a camshaft. Here is the link:

http://www.yellowbullet.com/forum/sh...d.php?t=693506

The shop where the BBC 427 is had SBC 406 a year or so ago I recammed. It was a 7 year evolution of parts to get it where he was at the time. The cam company that had the stick in the car told the owner nothing was left in his 23 degree headed engine. The engine builder called and after running the numbers I said it had .2ths left. To the owners disbelief we gain an average of 35#/ft and 30HP and at the end of the season .3ths was had.

What I do is consistantly backed up at the track or on the water.