ok spun bearing and decided to make more of a race motor. I'm going to make it a solid roller later on hopefully next year but for now I will be running the same cam.. What effects will this have on the engine, when it ran on 11:1 comp it ran great made 567rwhp with this same cam on a m6 now I'm going with a th400.

by the way cam is a 250/257 630/645 on 114

 

What engine size? What cylinder heads? What intake manifold?

Assuming your cam was ideal with your previous combo, the higher static compression will typically like a little wider LSA. I suspect that your 114LSA was probably too wide to start off with so the higher compression will probably be better suited for it.

 

414CI, AFR225, fast 90 set up.

the cam performed well with 11:1 had a wide power band, like i said before I'm looking to changing it to a solid motor in the future and didnt really want to buy another cam right now.

 

Who told you this?

compression ratio really has nothing to do with lobe separation.
typically, a wider ls is for power adder cars and naturally aspirated engines will make more power with a tighter lobe regardless of compression

 

It's pretty well known in racing circles. Compression certainly does have something to do with LSA. A tighter squeeze (higher static compression) will typically respond to a later intake valve opening/closing point and an earlier exhaust valve open/close. These moves will widen LSA. Look at the valve events of top performing high compression combos in various forms of racing. You should see the same trends.

 

This is the same reason my tuner put my cam on a 115 LSA. Results speak for themselves

 

almost have the exact power that i had, weird how big is your cam.

 

246 250 .612 nothing wild and very streetable.

 

That and a very happy dyno..

 

mine is actually very streetable a power band has a good range. Rick make that for u

 

I guess out here in California racing circles we do things different. We can agree to disagree. Maybe fuel injected ls engines like the wider lobe separation due to the cam overlap and the computer not being able to keep up. Not to mention both engine shops I have worked at( both run Super Stock) run their engines in the 16:1 compression range and their cams are in the 103-106 grinds and have been known to be installed at 99-100. Every single naturally aspirated carb engine I have built like 106 - 108 lobes. They have made substantial more power naturally aspirated.

Granted, with nitrous, these same engines with a 114 cam made more power with the same amount of nitrous, but when we had them setup up strictly n/a, it was a 8-22hp gain, depending on the cam.

The 22hp gain was on a 14:1 402 with TFS heads and a Super Victor ( the cam was 270/280 690/710 on a 106. Once it was degreed in, it was at 101 and it picked up 22hp over the same grind cam at 112

Like I said, I would never put that type of cam in a fuel injected car, unless it had a BS3 or a FAST...

 

Says the guy who has to type HONEST NUMBERS after is #'s cause they didn't turn out the way he wanted. My 408 has made more power than damn near every 427 that's been on that dyno so regardless of what you think of the dyno it's still making more power than the bigger cube motors on the same dyno.

But don't worry, i haven't forgot about all those spitefull people like yourself with lower #'s. Even though i just watched a LS7 Rx7 come make identical #'s on Synergy's dyno as it did on a local dynojet. I'm still going to get some #'s on another dyno next month (would have been this month but the event was cancelled). That way you'll really have something to about.

 

You're comparing 2 different animals. My cousin has run Super Stock and Late Model and they also run some narrower LSA's and 16:1 but that's in a motor runing alcohol and racing in totaly different RPM range than most of these street driven LS1's will ever see.

 

I'd start by answering some of the questions in this thread. Then maybe you'll get a real answer rather than my brother's, sister's, cousin made this much power.

 

Post some track times, lets see if it runs like a 560rwhp and 530rwtq car. I believe its a happy dyno as well considering everything is off the shelf and you are making more than every 416 I've seen with TFS 235 heads.

 

That has consistently been one of the top 2 or 3 happiest dyno's in the country. I'm not saying that's not what the dyno reads or that there are any games being played here.

BTW: Sorry if I hurt your feelings. I don't need inflated dyno numbers to make me feel like I've got a big weenie so I cant imagine how you must feel. My car was never built to be a dyno queen or even a track car. My car "turned out" exactly like I wanted - insane tip in and I can roast the tires from 1k RPM and still spinning at 100MPH with 315 PS2's.

 

Dyno #'s mean nothing....ZERO!!! The dyno is a tuning tool, thats it. When my car ran it's 9.82 pass it was dynoing 480rwhp. Now if I told you my big camed 402 made that to the tire I would get laughed at. But how many of you are even in the 10's? Minus the 402 in the mustang guy, looking at his combo I'm guessing it's a raped ape.

 

WKMCD is right Rick's dyno is consistantly ~30+rwhp higher than every other dyno even in the immediate area. Track times are a better qualifier, period.

 

It's got nothing to do with comparing 2 different animals. I was rebutting the fact that he said higher compression ratio engines like wider lobe separations and that is simply not the case.

And in your defense, my 402 currently has 11:1 compression, tfs heads, a small roller cam and an unported victor jr and it made 600+hp@6700 and 580tq@5400, so 569hp to the wheels for your 408 is pretty possible with the right cam with a manual transmission.

Granted, I want more power, so we are upping the compression 4 points, putting a ported super victor on it, a vacuum pump, a large solid roller, and a few other things to make 700hp n/a

Like onebadws6 said, dyno numbers don't mean ****. I had an engine that made 500hp and 500tq on an engine dyno. It put about 420hp to the tires, but the car worked flawlessly and it went 10.63@127 in a 3100lb mustang.

We have no idea how that dyno is setup or if he is using the dyno set to calibrate for sea level with perfect air.

 

I agree. Dynos are tools made o measure and quantify changes.
Also agree you can run real strong with lower hp, depending on alot of variables, which is one reason I DISagree with the whole "take it to the track" mentality, in that there are far MORE variables in racing than in dynoing a car.
Driver error, track prep, overall setup of the car, etc.
I currently have a car on the dyno that makes almost 700 rwhp. You'd think the thing would run a low 9. He'd be lucky to run a 10.90 without spewing parts all over the track.....