Jadedbird

iTrader: (27)

or he could use a bottle of 150 wet shot to make up the difference haha

topendrunner

iTrader: (1)

6.83 @ 104

the_merv

iTrader: (88)

That's movin..what's it in

rumblebox

iTrader: (9)

as if dynos were created for the sole purpose of testing for bragging rights instead of necessary fine-tuning tools. trap speeds and 60' times only tell you so much.... not everything is meant to go in a straight line either.

topendrunner

iTrader: (1)

89 Gt. Those numbers came from ticks dyno and they say its on the stingy side. Idk

Jadedbird

iTrader: (27)

Bragging right true. Times matter more than numbers, but its still a significant part of the formula. Yes you have to have a suspension that gets it to the ground, but you also have to have that power to make you move when you hit the ground.

Ive once heard a guy say this and its made me think...this guy has a point...
"a 400 hp car can out run a 900hp car if the 400 connects and the 900 is still smoking tires in the starting block."

Racing (in a straight line or not) is a very fomulated process. I do believe we get caught up in numbers. But then again this is the engine section of the forum.

After your formulate you engine, you can then begin to build you suspension to suit. Some choose to do it the other way, but then go overboard on suspension capable of holding twice the cars output. I guy that used to come to the track here had a 9" spool on a bolt on ls1. (With no plans of extending the power of his ls1)

And if im coming off as a know it all sarcastic *******, i honestly do not mean to.
I just have thought through how i was going to build this car 1000 times. Changed its purpose multiple times. And i feel like for my best interest. Build the motor, then suspension. By then, my tranny will need a upgrade and i can do little qwirks to the cosmetics throughout the process.

rumblebox

iTrader: (9)

You missed my point. I'm saying you can't judge a car's subtle power increases along the entire power curve by looking at track times, even with perfect suspension/traction. You need a dyno to see where you are or arent picking up power from fuel/spark tweaks. Advancing the timing almost until KR doesn't mean you're making the most power.

the_merv

iTrader: (88)

Dyno is a good tool to use for the reasons mention in the last post.

Alot of people that get caught up with them numbers fail to realize there are a few aspects to it where a car will dyno higher or lower. A car with lower gears will dyno lower cause the engine wont have to work as hard to spin the rollers..since a Dyno is measuring resistance on the rollers.

I've seen that one many times.

Jadedbird

iTrader: (27)

Ohh okay. Haha in that case, i defiantly agree with you!

onequickray

Well, I just sold my m/c dyno and found it to be an honest measure of what the MPH would be; after 17 years of using it, having bikes that ran in the 7's as well as one in the very high sixes, and many days and nights of having a blast, I had to come back to car racing, I don't have the back for the bikes anymore.... :<{, but Merv, I hope I can be good enough, if not to build myself, then to get the right minds to get mine to an honest 500 h.p. with the estimated MPH to match. I know that it is easier with bikes in that they are a lot lighter, but we used to get 265 h.p. on my slow Suzuki 1500 cc sled, at 440 lbs, it would run 1.15 60', 8.30's at 161+ spinning in second at Famoso here in Cali.

Wish me luck too cause I am one of the funny dingo's doing this with an old Buick Special and the LQ4 w/ Wossner 10-1 Pistons, (fantastic motorcycle 14k rpm pistons, now they make awesome stuff for Cars!), Scat rods and LS3 intake/ heads now. Stock crank too. (okay, you all can stop laughing now, and no, it is not my fathers Buick!) :<}

USMC5811

iTrader: (2)

I have a 408 with an LS3 top end and it put down 475/475 with a mild cam and a shitty exhaust setup so i would say its deffinitly possible, no doubt.

Jadedbird

iTrader: (27)

It would e nice to have a 500hp car but its only a number

Alvin@PCMofNC

We've been doing L92/LS3 head w/ custom cam packages in the 6.0L trailblazer SS's for YEARS. About three years the fastest all motor trailblazer SS was sporting our head and cam package using LS3/L92 valves. That trailblazer made 456/440 on our dyno if I remember correctly. Those are 6.0L LS2's with 4 inch bore. They work fantastic!

I wouldn't think twice about going with a LS3 top end on a 408. What we've learned using them is they like compression but you give up P2V quick by decking them. What type of pistons are you going to be using? They also do not like being over cammed especially if you want to make a ton of torque.

i420tom

iTrader: (11)

I wish i would have found this thread when it started back in april. Bringing this back from the dead to show off my results with a 4.00" bore.
10.96 @120mph in a heavier fbody 3500lbs raceweight. STOCK 4" BORE IRON BLOCK, STOCK LS3 INTAKE, STOCK L92 HEADS, stock low compression 9.5, cam, stall, and gears. Made decent dyno numbers 430/380 but track times are what counts......yes it would have made more with a bigger bore but you cant beat this bang for the buck..... I have a built thread on here somewhere...search and youll find it. Easy hp with the l92 heads and 4" bore, with mostly stock parts.

c4love

iTrader: (1)

What Cam where you running on this?

dawgs74

a 6.0 with the right cam and ls3 heads will make that let alone a high dollar 408......wtf

DietCoke

iTrader: (18)

wannafbody

iTrader: (2)

Bobby Stipkovic owner of Steel City Auto just put down a 10.43 1/4 mile pass with a 416 stroker with stock LS3 heads, M6 TA. He's using a rod modded LS3 intake and BTR cam. If you need help with your combo, look him up, he'd help you out.

KW Baraka

iTrader: (7)

You do realize you're responding to an almost 6 year-old post.....right?

KW

wannafbody

iTrader: (2)

No I didn't see that.