Greg,
I agree with you, with all the latest mods out with the pullies and headers and etc. there will be alot of low 12 second trucks out there and the ones that are eating less calories will be in the 11's for sure in good air!

Matt

 

Nice dyno ##'s Hope to be there one day still pretty much stock but waiting to see what happens to everyones else before I do to much. What I'm concerned is how much boost will a L supercharger and motor handle before it craters. Is the 6# pulley the biggest or will there be a 7# and a 8#,9#,10#???
And can you run Nitrous with the big pullies without any problems?? If so how much??

 

If you don't know your a/f then your dyno was basically non productive. You might have 20-30 more hp/tq with just fuel tuning.
Running lean is the easiest way to destroy any forced induction motor. ALWAYS wideband when you have the option to.

 

I would suggest getting some long tube headers - they made a major difference on my truck. I recently dyno'd my truck and I had 415 rwhp and 508 ft/lbs with an air/fuel ratio of 10.0. Needless to say, I sent the chip to be re-tuned.....

 

The easiest way to hurt someones feelings is to put your ride on a rear wheel dyno.
if the truck is rated at 380hp you will not see it on this dyno. 404hp at the wheels is very respectable. that would be close to the 425-430hp flywheel range. for a chip and 6# pulley thats a good jump. the rating that a company gives out are way off base. a fliter that adds 15hp may do that, but when combined with a chip that adds 25hp will not give you 40hp. when you get into the 400 + hp range little things like plugs etc will not add power they will just keep it alive longer. it may cost thousands of dollars to get another 20hp from it . it is not a simple step. a 400+ HP daily driven , street driven machine is just to hard to deal with everyday. now throw on a 100 shot of N02 and you got it. Common bolt on's will not net much above the 400hp mark

 

Try about 475hp.

Mine 400+rwhp daily driver is just a docile as can be, until you mat it. Maybe you need to stick to V6's.

 

Cornercarver, I have never owned a v-6 I was making a point and you are being a jerk. If you stop real quick from being a jerk and try to understand I meant from a upkeep aspect of a 400 + hp vehicle. they are very hard to run hard everyday and keep up. If you beat it everyday it will break , and you should know that.

Plus I was figuring a 5 % loss to the wheels, I think your 20% loss is way off.

You know you are so quick to flame someone.

And to my point you can ask Jim Summers , Mike Murrillo, Jon Barb, or any of those guys if I was off base at the cost to get a few X-tra hp.

But I am sure you feel that your 30.00 crankcase breather gave you 25hp.

 

Typical drivetrain percentage loss numbers.

Front Wheel Drive (FWD):
Manual 11% - 14%
Auto 16% - 20%

Rear Wheel Drive (RWD):
Manaul 13% - 16%
Auto 18% - 22%

Do a search on one of the search engines. You can find a ton of info on this subject. Right down to % loss from various fluids, rear axles, etc.

 

Grow up please.

 

I cant keep up

 

walker: I don't have quite the numbers CornerCarver has but I'm close. I may have them now as I've made several changes--one of which is 2 more lbs. of boost. See my sig. for the 'summer' numbers--soon, I will redyno and get some 'winter' numbers. Mine is a daily driver(19,200 miles) and a 1/4 miler and to date, haas never seen a shop or dealer--since I picked her up. So, not all 400+(close at 388) hp engs. are 'cranky' or trouble-making.

Dan

 

I would think I should be close to the 400rwhp mark and with 14K on my daily driver it has been trouble free other than a slight traction problem

 

Guys i'm not saying they are cranky or anything , please do not misunderstand me, I feel i'm the same at alittle over 400. what I am trying to say is when we max the pulleys out and try to go from that magical 450 + it is going to be alot harder and alot more expensive than the basic boltons cost. my point is it is possible that the jump from 450 to 460 might be a 1000.00 jump. and yes then it will probally get cranky because then it will be the cams or something else. Please do not take what I said the wrong way, I will push mine as far as it will go , and drive it every day . My 2000 has 16000 miles on it and takes me 30 miles each way to work . cranky or not I will drive it.


the main reason for my post was to not disharted by a rear wheel dyno pull. I sat down and watch racecraft performance in Atlanta one year at FFW with a mobile setup raking in the money on pulls and everyone came off with the sad face because of the numbers , what I was saying is do not let them ruin your day. 400 + HP feels awesome, I just wish the truck could handle the 400 + HP shot of nitrous I used to run , that was the only thing that was better feeling than my truck.

I felt I have explained myself and did not deserve the flame and will not post to this thread again.

 

walker,

I hope you are not referring to my "prod" as a flame, if so, you need ALOT tougher hide. Relax, you'll live longer. Notice the wink and smiley? Looks a little like this: BTW, most people refer to RWHP numbers and not flywheel numbers due to the inconsitencies in what people think are the correct frictional losses. RWHP numbers don't change. People using the wrong divider can skew the flywheel numbers.

The main reason people come away from a dyno with sad faces is they don't have the common knowledge that the manufactuers are only after their money, not to make them have more horsepower than their neighbor. FWIW, I see that most people on this board that are trying to obtain 425+rwhp have the common sense to know they are pushing the envelope and fully expect things to break. That's why some are building engines during the winter.


LIGHTNINROD,
Don't worry. You "summer" numbers are going to be better than you "winter" numbers now that you have started working on the truck. LOL

 

"Maybe you need to stick to V6's."

This might have been what ticked Walker off. Sounds like a flame to me, but what do I know? You might have meant well but I see friction building with a statement like that.

Everybody say "I'm sorry and I'll try harder next time".