Deeavi

iTrader: (16)

First stab at tuning the 416 only netted 430 rwhp/ 450 rwt. on a Dynocom dyno. Had trouble getting the air/fuel ratio right. It was 93 degrees with a heat index of 100. There is more power to be made, so we will try again later.

Hoping to get at least 450/470. We will see!

MrDavid

iTrader: (11)

wow, there is a LOT left in that car.

DjValy

you def got more in there, I got 488rwhp 480tq out of my 402 block, full bolt ons, A4 with stall. now that I broke in the engine for 3000miles, it should be a bit closer to 500rwhp

1997bird

iTrader: (2)

That is a preaty small cam for a 416. But you should be able to get more out of her.

ringram

Yeah cam is not the normal spec for L92 heads, more like LSx heads.
Are you getting full manifold pressure under WOT? Whats your timing at WOT? What size is your Y-Pipe? Maybe try with just the headers on there. Exhaust might be backing up preventing proper timing etc.

silver01z06

what size is the fast? you are running a 80 mm tb so i am guessing its a fast 78

the cam is kinda small for the cubes you have. also there is some talk about l92 heads not working well with normal lsx cams. to much overlap or something. i dont understand it all so do some research.

also what is your compression at with 78 cc chambers?

Ericbigmac83

iTrader: (19)

+1 on you needing a bigger cam, im looking at that size for stock cubed motor, that and the compression ratio are killing ya it looks like on a quick glance

Deeavi

iTrader: (16)

I don't believe it is the camshaft guys. When I changed the injectors there was a table "Short Pulse Adder" that had gotten changed incorrectly, and I did not find it until I got home and was playing around with the tune. I emailed the tuner and told him about it and he agrees that it could have been some of the problem. We had a lot of trouble getting the mixture right. I reset the table to stock and rescailed the injectors and the car picked up some more power, by feel, but I need to get back on the dyno.

I have a 78 mm FAST intake and I know that is holding it back some. I plan on updating the intake at the end of the year. Don't have any money left right now.

I feel confident that it will make more power when we get a chance to tweek it some more.

Also is anyone familiar with that bran of dyno?

Deeavi

iTrader: (16)

I don't believe it is the camshaft guys. When I changed the injectors there was a table "Short Pulse Adder" that had gotten changed incorrectly, and I did not find it until I got home and was playing around with the tune. I emailed the tuner and told him about it and he agrees that it could have been some of the problem. We had a lot of trouble getting the mixture right. I reset the table to stock and rescailed the injectors and the car picked up some more power, by feel, but I need to get back on the dyno.

I have a 78 mm FAST intake and I know that is holding it back some. I plan on updating the intake at the end of the year. Don't have any money left right now.

I feel confident that it will make more power when we get a chance to tweek it some more.

Also is anyone familiar with that brand of dyno?

STRIPSTAR

iTrader: (4)

That dyno should read close to a dynojet. That 78intake and the cam is where the hp is at. Your torque is there.

KingSS

iTrader: (1)

I think moving up to a different cam would solve a lot of problems you are having. Unless you are going for some really really good driveability from the car, a 228/232 cam is undersized for a 416 c.i motor. I also saw that you have PP stg 3 LQ9 heads with a 78cc chamber, did you build the motor for boost? If not I would try and mill the heads down a little bit for some more compression, that would definately get some more power out of the motor. Good luck.

Ericbigmac83

iTrader: (19)

Yes you will be able to tweak some more hp out of this setup with some fine tuning, but a normal cam for that size engine will gain you 40hp easy prolly, with a good sized cam and those cubes, 500hp shouldnt be a problem.

and yes, the intake is holding back 15ish hp

DjValy

get G5X4 cam for the cubes. that's what I have, you'll love it.

240/244 .609/.612 on a 111lsa +3.

Deeavi

iTrader: (16)

Thanks for the input! Yes I am looking for good drivability and durability. That is one reason I went with a little smaller cam. I did retard it 2 degrees, which is not much. I may change it out later, but for now it stays.

I also have 10.6 to one static compression! I could probaly go for more compression, cause I am getting 0 KR. but I am seriously considering a power adder later on. Working on it is half the fun.

I will post again after the next dyno run!

98Z28MASS

iTrader: (6)

Def agree with everyone else with it being the cam and 78mm intake. You should pull some more power with additional tuning but that cam is going to give you more low end torwue as opposed to high end Hp. 450 rwtq though looks good!

SS1875

iTrader: (34)

For an N/A car aren't 60# injectors a bit big?? Just curios. Also if you upgrade to a FAST 90mm don't forget to upgrade your TB as well...Nick Williams makes a nice TB. Good luck in meeting your goal, I did it with my 383.

'68maro

Wow. I'd be pissed...

edcmat-l1

iTrader: (10)

Bad combo. Intake, and cam.
The intake is killin ya. and TB.
The cam is too short on duration, and WAY short on lift. Like .060/.065 short.

PowerShift408

iTrader: (44)

Baby cam + low compression = your outcome. There's some power left, but you're leaving a lot on the table with those huge combustion chambers and tiny cam.

mike c.

iTrader: (1)

WOW. i got 463hp 414tq from my 346ci on a mustang dyno. Your cam is small for a 416ci and those heads may not be that great. I don't know much about your heads,but I do know they are not one of the top performers. Your results MAY not get alot better. I'd say bad combo,maybe not enough research when you did your build up.