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What bolt ons are left that would get me a little more? I’d love to be in the 7.60x range and still be full weight.
not interested in a SSRA or an udp.
Chassis work and anything to free up the motor will get you to your goal. I’ve been 7.3@92.5 with pretty simple bolt ons and should best that this year.
Would suspension work improve sixty foot even though it already hooks without spinning?
I’m pondering doing the FRA mod and maybe a ported TB and bypass. Obviously wouldn’t add much but ever little bit helps especially if I’m so close to that 7.6x pass already
Nice runs! 7.69 is the equivalent of an 11.99 in the 1/4. Your 60' times are also very solid for those ET's. I suppose you could dip into the 1.59 range with a little more work.
Would suspension work improve sixty foot even though it already hooks without spinning?
I’m pondering doing the FRA mod and maybe a ported TB and bypass. Obviously wouldn’t add much but ever little bit helps especially if I’m so close to that 7.6x pass already
Suspension will help launch the car better. All the little stuff adds up absolutely. The stock tb has a large lip that needs taken out and a ram air is worth the effort.
I did do the FRA mod and a ported tb and bypass. Haven’t been able to run again yet.
pondering a rear gear change. What kind of real world track improvement am I looking at with 3.73’s or maybe 4.10?
it has a 3.23 now. I would think that they would help sixty foot pretty good. I just run 1/8 mile.
eventually I’ll do a cam swap and later down the road a 100-150 shot.
I did do the FRA mod and a ported tb and bypass. Haven’t been able to run again yet.
pondering a rear gear change. What kind of real world track improvement am I looking at with 3.73’s or maybe 4.10?
it has a 3.23 now. I would think that they would help sixty foot pretty good. I just run 1/8 mile.
eventually I’ll do a cam swap and later down the road a 100-150 shot.
What bolt ons are left that would get me a little more? I’d love to be in the 7.60x range and still be full weight.
not interested in a SSRA or an udp.
port the tb, port the opening on rhe ls6 intake. The opening is smaller than the throttle blade. Set up a ram air. There are also things you can do to improve the airbox.
Fast 102 with ram air. You would need it for when you cam it anyway.
Weight reduction. There us weight all over these cars. It just crap you'll never miss and it can clean the car up and make it easier to work on.
Drag pak
Ati balancer
Crank scraper
Electric water pump.
E85
Gear 3.73 or 3.90
Shocks....the stock decarbons arent that good.
As others has said remove the front bar. You could make some links to preload the rear bar a little if you like tinkering to help the launch.
Carbon ds
Dyno tune, maybe you have one but you didn't list it.
Sxc car runs great. No reason you can pick up .5. Then hit the stock cam with a 100-150 and really make people scratch their head when you run well into the 6's in the 1/8 with a stock cam.
port the tb, port the opening on rhe ls6 intake. The opening is smaller than the throttle blade. Set up a ram air. There are also things you can do to improve the airbox.
Fast 102 with ram air. You would need it for when you cam it anyway.
Weight reduction. There us weight all over these cars. It just crap you'll never miss and it can clean the car up and make it easier to work on.
Drag pak
Ati balancer
Crank scraper
Electric water pump.
E85
Gear 3.73 or 3.90
Shocks....the stock decarbons arent that good.
As others has said remove the front bar. You could make some links to preload the rear bar a little if you like tinkering to help the launch.
Carbon ds
Dyno tune, maybe you have one but you didn't list it.
Sxc car runs great. No reason you can pick up .5. Then hit the stock cam with a 100-150 and really make people scratch their head when you run well into the 6's in the 1/8 with a stock cam.
thanks for that post. I did get a ported TB, will look into the lip on the intake you mentioned.
sxc car does run great. Looked at his thread and saw his track times.
im interested in doing skinnies up front as well as a rear gear change. What is your gear of choice for what I have in mind for the car?
the 3.90 looks like a good compromise between the 3.73 and 4.10
i looked at a mph/gear calculator and 3.90 would give me plenty of room to grow without being too crazy on the interstate.
Thanks for the good words guys. What I have found as far as the gearing on a A4...on a 26” tire you wouldn’t shift to 3rd(1:1) until right after the eighth with 3.73s. 3.90 right before the eighth and 4.10 decently before the eighth. All which will change if you add a cam and extend your shift points. I would do 3.73 if you stay stock cam or go ahead and do 3.90s if you know for a fact you’ll cam later. All in all both will be good multipurpose ratios for the street/strip and maybe worth .1-.2 in the quarter most of which is picked up in the back half.
I wouldn't put 4.10s and a 26" tire behind a auto with a stock cam.....but i wouldn't put that combo behind a m6 car either. It limits the top end to much for no real gain in low speed acceleration.
On top of that the 4.10/4.11 gear set is weaker than 3.73/3.90. Pretty important with a 7.5 to consider that.
I would reconsider your opinions on ram air setups and UDP’s. Then seal up the air box, short belt to bypass power steering and remove the easy weight like spare tire, backseats, bumper braces etc.
Will a 3.73 or 3.90 even make a difference in the eighth mile? Btw I was watching a video of my car at the track and it hits third at the exact time it’s going thru the traps
I’m not against the ram air for any reason other than my trans cooler is too big to fit it and I spent too much time and effort getting it mounted to change it lol
hope to run at the track Thursday, weather permitting, and see how it runs in warmer weather
Minimal difference in gear change in the eighth. Most of the benefit of a gear change in stalled auto is better utilizing the 1:1 on the top end. Gears will also tighten up a loose converter and make it more enjoyable on the street.
Gotcha. I’ve got some thinking to do then lol. I’m pretty happy with it the way it sits but if it ran 7.5-6 bolt on only and then 7.20-7.30 with a cam I’d be pleased with that.
03-07-2020, 09:12 PM
Bolt on ls1 eighth mile 
