TimsLS1

This is on Aussie dyno that reads a bit lower the the US dynos 279 rwkw on a mainline comes out at 374 rwhp plus 14% equals @ 426 rwhp on a dynajet, The thing I find of interest is the cam with more intake duration made more low rpm power despite it being in my engine before rebuild on lower compression and on lower octane gas.

With new cam (in red) I also remmoved about 1mm porting the exhaust but I would not have though that minimal amount would loose low rpm power. The new cam is on a rebuilt engine with only about 100 miles on it.

Im still happy with the overall result, I wanted power without having to rev too high.

bortous

Can you tell us the rest of your engine combo?
Compression, Intake etc.

AwesomeAuto

Its very possible that the difference in fueling down low is the reason for the difference in low-rpm power.

TimsLS1

Hi, yes
Its a LS6 intake manifold, with otrcai and 1/34 headers

upgrades with new 217/228 cam results are here but old cam still had more low rpm power despite all this and it had more Intake duration. My hunch is I would have been better of with the high lift version of the BTR Cam I first had. It was also better behaved.
Rebuilt engine
LS2 injectors
10.5:1 comp
93 octane (91 octane previous cam)
Porting just a small amount 1 mm on exhaust and some bowl work
Added some high flow cats (none previously)
​​​​​

G Atsma

....otrcai??

Darth_V8r

iTrader: (4)

Over the radiator cold air intake

bortous

Get with the times G.
Lol

G Atsma

I'm used to otfwcai....
Thanks guys... lol

TimsLS1

This is from my owners manual, my otfwotrcia (overthefrontwheelsovertheradiatorcoldairintake) covers near 1/3 of my radiator, lol.

LilJayV10

iTrader: (39)

I guess we aren't the cool kid club. I had no idea what it was either. I guess YouTube failed to teach me that.....

G Atsma

LOL! Awww man, you gotta KNOW Facebook is where you learn all the cool stuff! YouTube, huh? Gonna hafta check that out too.....

TimsLS1

I usually just call it an OTR I think its primarily an Australian abbreviation, weren't the Corvette and Pontiac's often already over the radiator from factory? For us it is a bit more of an important distinction.
It was like this originally like this below, I actually prefered its appearance and I removed the air con as the instructions with the OTR required I bend the air con cooler to fit it and I did not want to do that.

like this.

G Atsma

Corvette and Gen 4 F-bodies were both over the radiator. Might be others, but don't come to mind right now.

TimsLS1

Taking it for a 4 hour drive today to see Mum in Nubeena Tasmania, it will be a great drive, fun!!!

LilJayV10

iTrader: (39)

Since we are talking abbreviations, i wonder how many people know what FUPA is.....haha

LilJayV10

iTrader: (39)

What's a Roo bar? Is that for kangaroos down there?

G Atsma

I can imagine the first two letters, LOL! Clueless on the other two.

G Atsma

Not so much for them, but to protect the front of the vehicle likely to strike a roo, which aren't exactly rare.. lol

LilJayV10

iTrader: (39)

You do realize you just contradicted yourself right?

G Atsma

No. The bar isn't to protect kangaroos, but to protect the car or truck about to pulverize the roo. No contradiction at all
You asked if the bar was "for them". It's actually "against" them, lol.