[laynlo15]

I'm getting ready to swap out my stock Lt1 IM to a Pray ported and the stock TB to a Ported Katech. Also installing my Dsx E85 sensor and I'll be tuning it. Staying with stock Exhaust Manifolds on this one unlike on my C7.
You car is running pretty dam good and that 7.03 will put you right about 11.00 1/4 mile pass. The Msd should also help your trap speeds on the big end. My C7 went 128 mph on one pass so they make great power up top. Good luck next time out.

[Murder6.2]

Originally Posted by s346k

youre getting there. those auto cars are fast.

Thanks brotha! I should have Aerospace brakes and some BMR stuff on next time out.

[Murder6.2]

Originally Posted by laynlo15

I'm getting ready to swap out my stock Lt1 IM to a Pray ported and the stock TB to a Ported Katech. Also installing my Dsx E85 sensor and I'll be tuning it. Staying with stock Exhaust Manifolds on this one unlike on my C7.
You car is running pretty dam good and that 7.03 will put you right about 11.00 1/4 mile pass. The Msd should also help your trap speeds on the big end. My C7 went 128 mph on one pass so they make great power up top. Good luck next time out.

Those LT1s are a bit quicker than a A8 SS from what I’ve seen at my local track.
Those mods should easily get you low 11s and low 7s.
MSD definitely pulls after 100MPH.

[arpad_m]

Originally Posted by Murder6.2

Those LT1s are a bit quicker than a A8 SS from what I’ve seen at my local track.
Those mods should easily get you low 11s and low 7s.
MSD definitely pulls after 100MPH.

Makes sense, the A10 has a useful extra gear between the A8's tall 4th and 5th, that's where it loses a bit of acceleration at the dragstrip, plus the LT1 is somewhat lighter.

[laynlo15]

I'm not as impressed with the A10 as much as I was with my A8. Obviously its been cold here in Missouri since I bought it and pavement is cold. I haven't had a place to run it out yet but it doesn't feel as strong as my 1ss when it was stock. So not sure what to think yet. I took my 16 1ss to the track when it had under 1000 miles on it and won't be able to get this one too the track till next month. My stock 1ss went 12.04@116 bone stock so not sure this one will do that, just doesn't seem that fast anyway and for sure doesn't feel like my C7 did bone stock. We hope to dyno it next weekend before I do the E85 sensor, IM and TB plus the tune of course.

[Murder6.2]

So ever since the new round of mods I have been having major traction issues.
I wonder why LOL
Just got the Aero space brakes installed this weekend!
Hopefully now I can shoot for 6s.

Not sure why the pics are sideways.
Forgot to mention I recently installed BMR Upper and lower trailing arms and BMR upper control arms, and got a fresh alignment.

Also X brace, Sway bar and Auxiliary radiators are coming off.
I believe this should be about -50lbs of weight reduction.

I believe aero space brakes lose about -45lbs.

I’ve had a Kirkey Driver seat for a while now, but never pulled out my passenger and rear seat, didn't want to do that until I knew the tune was dialed in. Tune is now dialed in so passenger and rear seat are coming out as well. I have a Braum racing Passenger seat and pulling it with the bracket saves -36lbs. (I weighed it) I hope the backseat pulled will save another 20lbs.
This should have my car weighing about -150lbs less than it did on my 7.0 @98 pass.

Hopefully the weight reduction, BMR stuff, fresh alignment, and new tires can help get me that 6 sec pass.

[RUQWIKR]

Murder6.2, you said prior "Also for anyone curious on the KPA difference between a Stock LT2 and stock TB vs a ported MSD and ported 95mm TB, it jumped from 97kpa to 98.5kpa."

What kPa did you see with the original stock intake manifold & t/b? Thanks.

[laynlo15]

What size MT Street Rs did you go with. They'll hook your power with ease

[Murder6.2]

Originally Posted by RUQWIKR

Murder6.2, you said prior "Also for anyone curious on the KPA difference between a Stock LT2 and stock TB vs a ported MSD and ported 95mm TB, it jumped from 97kpa to 98.5kpa."

What kPa did you see with the original stock intake manifold & t/b? Thanks.

So I never logged it with completely stock IM/TB however I do have logs with Pray performance Ported stock IM/TB with a rotofab Dry (97kpa) and with the same combo with the stock airbox with a Kn drop in (96kpa)
Stock air box Pray ported stock Tb/untouched LT2 was 97kpa
Stock air box with green filter, Pray ported 95mm Tb/Ported MSD was 98.5-99kpa
Rotofab Dry, Pray 95mm Tb/Ported MSD 99kpa

[Murder6.2]

Originally Posted by laynlo15

What size MT Street Rs did you go with. They'll hook your power with ease

305/45/17 same as before just a brand new set.
I never had a issue with them until they were bald LOL even cut a 1.51 with them being bald.

[Murder6.2]

This 6.99 is not coming easy LOL
So I hit the track this last Thursday only changes since my 7.03 @98.2 pass is basically the aerospace front brakes and BMR arms/Alignment and new tires.
Car felt like it would just die and I checked the logs for whatever reason the fuel trims were moved and the car was running super rich mid 11s AFR (used to be 12.8ish)

The Air that day wasn’t the best was 60.0 Water grains and It was actually micro drizzling the whole day.

I think I diagnosed the issue so I was doing some testing with a Rotofab intake and decided not to keep it so I sold it and put the stock air box back on however I lost all my rubber grommets and the air box was pretty lose. I already bought new grommets and made sure the box is sealed tight.
I’ll hit the track in a few weeks before I go I’ll remove the sway bar, X brace and Aux radiators and probably take the seats out.
I’ll weigh the car after all that.

[Murder6.2]

Hit the track again with less weight (sway bar, X brace, and auxiliary radiators removed) and any potential problem I could think of fixed.
First pass right off the highway was a 7.05 @97.1 with a 1.45 60’ 1100DA manifold temps were 136.
Second pass was 7.04 @97.7 with a 1.48 60’ DA was 600 on this pass. I let the car cool down for about 2 hours in the shade manifold temps were 99 degrees right before I ran.

Super weird since my first 7.03 pass back in February in 450DA, I added Aerospace front brakes which removed about -46lbs off the car, I removed the Sway bar which is about 12lbs, the X brace which also about 12lbs, and the auxiliary radiators which was about 20lbs. So about 90lbs of weight reduction all on the nose of the car, also did BMR trailing and control arms followed by a bad ass alignment (which helped the car cut a 1.45 60’ compared to 1.51 previous best on the stock suspension) and I can’t get the car to go as fast as it was before all this stuff. Any feedback would be appreciated.

I ended up weighing the car just to see how much it weighs, clocked in at 3480 with less than 1/4 tank of fuel which is how I race it. I’m about 220 so 3700lbs race weight

[Yosh6]

[QUOTE=Murder6.2;11173902]

Any feedback would be appreciated.

1/2 a 1/4 tank of fuel which is how I race it.[QUOTE]


Try 1/8 or less tank of fuel. Weight is weight. gas 7+/- lbs per gal. One of my favorite sights is the low fuel light coming on on the return road. When you're chasing those last few hundredths, every little thing adds up. After turning a 10.89 in October of 2019, I decided to go for the 10.60s. Didn't get it until 12/12/21 (10.63). A LOT of work and money went into getting that .25 second. Your 60' is great for your HP level. In fact a lot of cars with a lot more HP are not doing that well. I'd look on the other end. You are 2 MPH from the 6.90's. My first 6.90's were at 99 MPH, 6.80's - 100-101 MPH, 6.70's - 102 MPH. Looks to me like you have the package to do it if you can get just 1 maybe, or 2 for sure more MPH. Less weight, more HP (what 20?), better wax (try ceramic! ) you're so close! You mentioned a hesitation, like a bog? Sometimes with a dead hook on a stock converter these cars will bog just off the line. Is that where it is? At one point in my journey my car was doing that. Also at one point, something in the tune was causing the TB butterfly to close slightly and then open for no reason. Brett fixed both issues. Lastly, If you changed the intake, you need to look at the tune. "Anytime you change the intake or exhaust, you have to adjust the tune." -Brett.

[Murder6.2]

[QUOTE=Yosh6;11174085][QUOTE=Murder6.2;11173902]

Any feedback would be appreciated.

1/2 a 1/4 tank of fuel which is how I race it.

Try 1/8 or less tank of fuel. Weight is weight. gas 7+/- lbs per gal. One of my favorite sights is the low fuel light coming on on the return road. When you're chasing those last few hundredths, every little thing adds up. After turning a 10.89 in October of 2019, I decided to go for the 10.60s. Didn't get it until 12/12/21 (10.63). A LOT of work and money went into getting that .25 second. Your 60' is great for your HP level. In fact a lot of cars with a lot more HP are not doing that well. I'd look on the other end. You are 2 MPH from the 6.90's. My first 6.90's were at 99 MPH, 6.80's - 100-101 MPH, 6.70's - 102 MPH. Looks to me like you have the package to do it if you can get just 1 maybe, or 2 for sure more MPH. Less weight, more HP (what 20?), better wax (try ceramic! ) you're so close! You mentioned a hesitation, like a bog? Sometimes with a dead hook on a stock converter these cars will bog just off the line. Is that where it is? At one point in my journey my car was doing that. Also at one point, something in the tune was causing the TB butterfly to close slightly and then open for no reason. Brett fixed both issues. Lastly, If you changed the intake, you need to look at the tune. "Anytime you change the intake or exhaust, you have to adjust the tune." -Brett.

So I noticed something that’s throwing me off, my converter doesn’t lock up until 3rd gear, I can tell the rpm drop when it locks is really slowing down the car, I did some lurking on Prays IG and noticed all his converter cars lock up in 2nd gear which makes more sense to me, 2nd gear pulls a lot harder than 3rd gear, so staying in 2nd for longer makes a lot of sense.
I also have a draggy and always record my 40-100 50-100 and 60-100 and there’s about a .2-.3 difference on the street where the converter is locked for rolls and the track where it doesn’t lock up until 3rd. I’m going to ask him about this.