LS7 Conversion into Pontiac GTO

[harryoz]

Found this on the LS1GTO site.

Video here

http://tp.lhndesign.com/ls7goat.wmv (86mb though).

Sounds fantastic, I wouldnt get tired of that sound....

Full thread is here
www.ls1gto.com/forums/showthread.php?t=108691

[willisit]

[redacted]

[ringram]

The guy driving was a bit slack, no wheel spin at all. Whats the point?

[harryoz]

ringram said:

The guy driving was a bit slack, no wheel spin at all. Whats the point?

running it in?

[ringram]

Nah, Dyno was screaming, plus the best method for running is reconed to be plenty of varying revs and load.

[Boosted LS1]

My take is that it's run in. It revs freely and breaths very easily. The driver's using the torque and not the revs when he's driving it. I also think it's got a timing issue when they return and park up. I'm sure it's surging at low speeds when hot?

Boosted.

[ringram]

I got bored before the end so didnt see that bit.

[Boosted LS1]

ringram said:

I got bored before the end so didnt see that bit.

LOL, It sounds like a nice engine I'll hum it to you next time we meet. If you can stay awake go to the end and listen to it? Be interesting if you can hear what I'm referring to. The commentator says there isn't a fuel issue. Maybe the driver's soiled his pants and his legs getting a bit restless!

Boosted.

[after_shock]

What power would you get if added a supercharger to a LS7?

[Boosted LS1]

after_shock said:

What power would you get if added a supercharger to a LS7?

Stock compression is high at 11:1 so I wouldn't expect it to take a lot of boost and the pistons aren't a strong point. You could spred the boost about though and use good management. I'd expect 750 bhp before modifications internally. Bottom end grunt would be significant

Boosted.

[after_shock]

Thought the LS7 used a number of titanium bits? Or is it just a few bits and the rest of the engine isnt that strong?

[Boosted LS1]

after_shock said:

Thought the LS7 used a number of titanium bits? Or is it just a few bits and the rest of the engine isnt that strong?

Forged titanium rods, not billet. Titanium valve's and some valve train parts to help with the high revs and nice lightweight 'cast' pistons to keep weight and costs down No forged pistons in there. Crowns are thin to reduce crevice volume which is great for a stocker but not so good for boost and accidental detonation.

Boosted.