Performance upgrades to LS3 / SS option

[Robert91RS]

What are you looking for?

[shank0668]

What are you looking for?

cam headers

[rgrizzard]

Originally Posted by Robert91RS

I know it's IRS but I can tell you it won't handle that power. I'm looking at blown up diagrams and specs right now. Trust me, the only way you can put down those numbers will be a rear end conversion.

Specs for what rear-end??? Has there been an official word on which it is getting??? Please share!

[Robert91RS]

Headers are vehicle specific and it will take months after the cars release before they are available. As for the cam I have several GM pieces I or your local dealer can get you. LS3 cams are not different from the other LS motors so any other Comp, Crane, TR, etc cam will work.

[shank0668]

oh ok thanks

[Robert91RS]

Originally Posted by rgrizzard

Specs for what rear-end??? Has there been an official word on which it is getting??? Please share!

The rear will be the same as the one in the G8. It is a significant improvement over the GTO rear but still wont be comparable to the vette.

[rgrizzard]

That sux!

[camaro9899]

appreicate all the feedback guys, it seems like I'll need to tweak the gears for sure, see what comp cams has available at that time , bigger headers, to possible 2 1/2 to 3 in cat back exhaust. Which is a better supercharger for the LS3, whipple, procharger, eaton, or somebody else?

[rgrizzard]

That depends on the application, we'll have to see what comes out and compare. Some considerations for the sc is space...

[Robert91RS]

lol The 4th gen was no better, the rear end would fail under stock power with nothing but sticky tires. The same rear was used in the 3rd gen but because it was less powerful it happend less. I suspect the new rear will be a piece of art but nobody drag races on IRS and there is a reason for that.

[boxmonkeyracing]

Originally Posted by Robert91RS

lol The 4th gen was no better, the rear end would fail under stock power with nothing but sticky tires. The same rear was used in the 3rd gen but because it was less powerful it happend less. I suspect the new rear will be a piece of art but nobody drag races on IRS and there is a reason for that.

know quite a few people that drag their vettes. . .

[Rock36]

Yeah lots of vette drag racers, but I'm kinda with Robert here.

IRS is severly prone to wheel hop out of the hole, just the nature/compromise of the design. Furthermore, that is generally the problem with the LS2 GTO, and why it is difficult (generally speaking) to crack 12s bone stock.

I don't think gears will be one of my first mods. I would lean more towards a cam first, and adjust the fuel mapping and timing. That would be plenty to get well over the 400 rwhp mark.

[Kyle2k]

Originally Posted by Robert91RS

lol The 4th gen was no better, the rear end would fail under stock power with nothing but sticky tires. The same rear was used in the 3rd gen but because it was less powerful it happend less. I suspect the new rear will be a piece of art but nobody drag races on IRS and there is a reason for that.

I don't mean to offend, but you are really talking out of your ass- the car isn't even out yet. Have you heard of the Charger? People are making insane power with them and the only rear end modification they make are stronger half-shafts, that's it.

[boxmonkeyracing]

Originally Posted by Rock36

Yeah lots of vette drag racers, but I'm kinda with Robert here.

IRS is severly prone to wheel hop out of the hole, just the nature/compromise of the design. Furthermore, that is generally the problem with the LS2 GTO, and why it is difficult (generally speaking) to crack 12s bone stock.

I don't think gears will be one of my first mods. I would lean more towards a cam first, and adjust the fuel mapping and timing. That would be plenty to get well over the 400 rwhp mark.

why cam? why not exhaust and intake first? or chassis/suspension setup? cam seems to be 3rd or 4th for most people. . .


my idea
suspension/chassis
exhaust/intake
then start the internal mods.