Ruken

iTrader: (1)

Numbers are a little low considering the mods done in my honest opinion. But again, it is a mustang dyno. It is around a 40whp improvement over the last run. (No cam or rockers) I don't have the sheet right now, printer was out of ink, but ill show you a comparison soon. Ended up being around 317whp. Car and motor only have 53k miles

I will come back and embed the videos once I get access to a computer.

Ty McBride
Team Leader/Owner
McBride Motorsports

https://goo.gl/photos/W1tNEnFns5JukUFk9

moehorsepower

iTrader: (3)

is that from bone stock or with just boltons, if so thats not bad considering we would see a 35-50 horse gain with cam and rockers, of course depending on what cam, also, Im not saying they dont know how to tune LT's but a lot of shops tune like if its an LS in the timing and A/F tables..

Ruken

iTrader: (1)

All bolt ons on the first run at the beginning of the year. And the Cam and Rockers now. It has a Mail Order Tune from PCMforless and I am happy with it. I didnt have a way to data log any of the runs. But a glance at my wideband during my last pull at woot showed a good A/F Ratio. I am happy with the tune, car runs great, car pulls strong. Im just about ready to move to the Brownsburg IN area so the car is being put up for a bit. I would like to do another run on another dyno just for comparison.

Ty McBride
Team Leader/Owner
McBride Motorsports

Ruken

iTrader: (1)

Anyone else have input or experience on why the numbers might be low. I'm suspecting the Mustang Dyno as other people have mentioned also. Maybe it needs calibrated, maybe something was set up wrong. I do know that the heads are my main choking point.

Ty McBride
Team Leader/Owner
McBride Motorsports

ShovelMan

Did you do the rocker arms and springs yourself? If so, how long did it take you?

NewOrleansLT1

What cam do you have?

BALLSS

the #'s are low compared to similar builds....but as you note, and others, Mustang dynos are known to read low. Was the data SAE?

your AF shows good. You could pull a few plugs to read them. Nice & tan is how they should look which would indicate a good tune. Dark would indicate rich condition so "something" would need to be looked into if that is the case (tune, leaking exhaust manifold)

I would go hit the 1/4 mi and do some runs. If you are hell bent on getting another "dyno" opinion, find a shop with a dynojet dyno

moehorsepower

iTrader: (3)

What was your A/F & total timing

Ruken

iTrader: (1)

I put the rockers in about a month after I installed the springs, Total time I would say it took me a couple of hours. I used a couple different type of springs compressors to speed the process along. Because of the design of these cars you cant get a lever type spring compressor on the back springs. I used a dual type of spring compressor the compresses both springs at once

CC503 with 1.6RR

Cars is storage now, but ill keep this thread going. And post updates once I inspect the plugs. Ill have to find out on the Data. The dyno runs were for a Scholarship Event at the Lincoln Tech Campus.

Timing I am not sure, I had no way to log the run at this time. I checked my A/F on my wideband during my last run at towards the top at at 5800RPM it was around 13:3-5 range. I really wish I had logged the run. But everything kind of turned out to be a last minute run.

DANOZ28

iTrader: (1)

hey i've run my car on a normal dynajet & a mustang and the difference was 15 rwhp. we have a local dynajet that reads 25-30 hp too high so be aware not all dynos are created equal.

SS RRR

iTrader: (2)

40rwhp is a significant gain as long as the dyno you used is the same as the one you did your base line. Take it to the track when you can. What elevation are you at?

lt1-xjs

Danville performance is 10 miles away from Brownsburg, they have a Dynojet.

NewOrleansLT1

A4 or M6?

Ruken

iTrader: (1)

It was the same Dyno, And I thought it was a pretty significant gain. I figured the numbers would be lower then most other peoples with similar mods. Just seemed low considering what other people have put down with the same mods. Current Elevation is 5258Ft

I understand this, and around 40hp is nothing to be ashamed of. Just trying to get some opinions. Friend as a 05 GTO, took him out in my car and he feels like its way more powerful then his. Even before the cam install. I told him its just because his cars a fat pig.

I might take it down to PCMforless's actual shop location. Since I had them do the base tune and im always down for a road trip

M6 4th gear pull

SS RRR

iTrader: (2)

Do you know if your baseline was significantly different from other LT1's which were stock? Because really, 40rwhp gain with a cam swap and rockers is really good, IMO.

NewOrleansLT1

My older cuz has a 96 Trans Am M6 WS6 with full exhaust, 1.6rr, custom Comp cam 220/230 112lsa, and a tune. The car has 100,000 miles and put down 355rwhp, 363rwtq on 19" rims C6 rims..

Ruken

iTrader: (1)

That's what I was thinking, car is a Comp T/A with 52k miles and without the cam and rockers it put down like 275-276hp some where around that range. I thought that was low then also. I was expecting around 295 with the mods and low mileage

That's right around what I was expecting number wise for the HP

SS RRR

iTrader: (2)

That's about right on par for a stock OBDII LT1. Right around that HP at 300'ish rwtq. My SS dyoned 278/310. A gaggle of other LT1 files I saw on that dyno where pretty much the same.

Ruken

iTrader: (1)

That wasnt stock, that was with all the mods listed minus the cam and rr. Thats why I expected it to be a little bit higher on the baseline run

kingtal0n

iTrader: (1)

Don't worry too much what a dyno says. Anything except a dynojet is a wild swing of a possibilities. What will tell a little better is the MPH at the end of a 1/4 mile, that is the kind of thing you can compare a little easier.