Snowflake Posted April 28, 2009 Report Share Posted April 28, 2009 I am ready to get an LS6 intake for my car. Is there anything else that needs to be upgraded or changed while doing the swap or is it as simple as taking off the old one and putting on the new one. Now as far as the gears. From what I can tell during my research it is a waste to change to 3.42 gears from 3.23's. Im interested in input on this since I havent done it yet but I already have it. Im thinking since I already have the 3.42s I might as well change them out. I could only see gains even if minor is my guess. thoughts... Does anyone think my 18's hurt me at the track vs. stock 16's. Quote Link to comment Share on other sites More sharing options...
Scotty2Hotty Posted April 28, 2009 Report Share Posted April 28, 2009 If it's a 98-99 car, you'll need to block off the EGR. Gear wise, I think you'd be much happier with a 3.73 set up personally. 3.42 won't be a huge change, or feel in the seat. Quote Link to comment Share on other sites More sharing options...
TurboRust Posted April 28, 2009 Report Share Posted April 28, 2009 anytime you have a taller/heavier rim you're giving up some on the track.. more side is more flex and more bite. find some stickies for the 16's and you'll never look back Quote Link to comment Share on other sites More sharing options...
MrMeanGreen Posted April 28, 2009 Report Share Posted April 28, 2009 Wrong section. You'll need the LS6 coolant lines as well for under the intake, as well as blocking off the EGR and having the code disabled unless you like the SES light. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 28, 2009 Report Share Posted April 28, 2009 regearing will all depend on what you plan on doing down the road IMO. all motor? turbo? spray? more street then strip? Quote Link to comment Share on other sites More sharing options...
Zach1647545520 Posted April 28, 2009 Report Share Posted April 28, 2009 Ls6 intake- delete egr gear- definitely get a 3.73. Quote Link to comment Share on other sites More sharing options...
xlr8tn Posted April 28, 2009 Report Share Posted April 28, 2009 you'll need the coolant crossover pipe and coolant plugs for the rear ports. thunder racing carries them. Quote Link to comment Share on other sites More sharing options...
Rob1647545496 Posted April 28, 2009 Report Share Posted April 28, 2009 with 3.23's 40 mph in 1st gear will be 4400 RPM and 4th will top out at 144 with 3.42's 40 mph in 1st gear will be 4700 RPM and 4th will top out at 136 with 3.73's 40 mph in 1st gear will be 5100 RPM and 4th will top out at 124 (top speed in 4th is assuming 6000 RPM) Quote Link to comment Share on other sites More sharing options...
Cordell Posted April 28, 2009 Report Share Posted April 28, 2009 with 3.23's 40 mph in 1st gear will be 4400 RPM and 4th will top out at 144 with 3.42's 40 mph in 1st gear will be 4700 RPM and 4th will top out at 136 with 3.73's 40 mph in 1st gear will be 5100 RPM and 4th will top out at 124 (top speed in 4th is assuming 6000 RPM) I take it this is supposed to represent a 6 speed car? Because on my A4 Z28 with 3:73s, 3rd gear tops out about 124 at 6200 rpms, give or take a little. Cruising in my car at about 70mph, 2200 rpms in 4th is about where I'm at. Quote Link to comment Share on other sites More sharing options...
Cordell Posted April 28, 2009 Report Share Posted April 28, 2009 you'll need the coolant crossover pipe and coolant plugs for the rear ports. thunder racing carries them. The coolant lines you have can be modified, but its much simpler to replace them with ones off of a newer car. 2001 and 2002 f-bodys had them, and any other car with an ls6 intake. Quote Link to comment Share on other sites More sharing options...
Billiumss Posted April 28, 2009 Report Share Posted April 28, 2009 You need new coolant lines since the LS6 intake floor sits lower, the LS1 is "humped" up. Just make sure you get a real LS6 intake, many people have been screwed over. Check the part number. When you get LT Headers, get race ones so they don't have the EGR and AIR ports. Give me a call sometime. Bill Quote Link to comment Share on other sites More sharing options...
Snowflake Posted April 28, 2009 Author Report Share Posted April 28, 2009 Thanks guys. Im glad I asked I was thinking it would be as easy as taking old one off and putting new one on. I will probably buy a new intake unless I can find one locally from someone trusted so I will for sure get what Im paying for... Quote Link to comment Share on other sites More sharing options...
Billiumss Posted April 28, 2009 Report Share Posted April 28, 2009 Thanks guys. Im glad I asked I was thinking it would be as easy as taking old one off and putting new one on. I will probably buy a new intake unless I can find one locally from someone trusted so I will for sure get what Im paying for... you can get a nice used one LS1tech.com for around $325-350 shipped, just make sure you see some pics of it and the part number. Once you get it, you will need new gaskets as well, get those from Autozone, way cheaper than the dealer. Bill Quote Link to comment Share on other sites More sharing options...
Rob1647545496 Posted April 28, 2009 Report Share Posted April 28, 2009 I take it this is supposed to represent a 6 speed car? Because on my A4 Z28 with 3:73s, 3rd gear tops out about 124 at 6200 rpms, give or take a little. Cruising in my car at about 70mph, 2200 rpms in 4th is about where I'm at. that is correct the gearing for the automatic is 3.06 1.63 1.0 .7 for the M6 it's 2.66 1.78 1.30 1.0 .74 .50 also i wasn't sure on tire size so i just used 26" Quote Link to comment Share on other sites More sharing options...
99ta Posted April 28, 2009 Report Share Posted April 28, 2009 can't you just de rib the bottom to make it work with the current collant lines? Quote Link to comment Share on other sites More sharing options...
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