[PRAY]

Given even traction in an A8 with a stock converter which do you guys think would be faster in the 1/4 at equal boost?

I did a M7 C7Z that made 644/670rw that is literally a bit painful in the chest when I am in the passenger seat looking at the computer doing 3rd gear street tuning. rowing the gears is pretty brutal as well. Sits you back hard and doesn't let go. I just finished up an ECS A8 C7 that was boost restricted to 8psi that made 577/540rw on the same dyno in 5th. Driving and tuning both I am not sure which is faster. The ECS car is a dog tuning locked in 3rd. But smash it in D and let it do it's thing and it is a pretty fun ride. When done right, traction really isn't an issue in either car. But these are completely different cars and set ups.

[SGDM]

Originally Posted by PRAY

Given even traction in an A8 with a stock converter which do you guys think would be faster in the 1/4 at equal boost?

I did a M7 C7Z that made 644/670rw that is literally a bit painful in the chest when I am in the passenger seat looking at the computer doing 3rd gear street tuning. rowing the gears is pretty brutal as well. Sits you back hard and doesn't let go. I just finished up an ECS A8 C7 that was boost restricted to 8psi that made 577/540rw on the same dyno in 5th. Driving and tuning both I am not sure which is faster. The ECS car is a dog tuning locked in 3rd. But smash it in D and let it do it's thing and it is a pretty fun ride. When done right, traction really isn't an issue in either car. But these are completely different cars and set ups.

Good question...too many factors but I am biased, love the PD and my LT4 blower. Just right.

[toohighpsi]

Originally Posted by hogwild87

I ran a 9.95 at 135 the other day on my procharged car on stock internals with headers converter and meth

My point exactly, what did you run without the headers and torque converter? Both are mods that I didn't need get into the 9's with a PD.

Now on the other hand, PDs normally have higher cost than the Centri so you can have room for more mods, but drivability might suffer some with a high stall converter.

BTW - Great pass hogwild87, welcome to the 9 second club!

[hogwild87]

Originally Posted by toohighpsi

My point exactly, what did you run without the headers and torque converter? Both are mods that I didn't need get into the 9's with a PD.

Now on the other hand, PDs normally have higher cost than the Centri so you can have room for more mods, but drivability might suffer some with a high stall converter.

BTW - Great pass hogwild87, welcome to the 9 second club!

10.13 at 139 pre converter and headers turns out converter is too loose has 13% slip so I'm swapping it out for a tighter converter and thanks I hope to be in the 9.5's at some point

[wnta1ss]

Originally Posted by toohighpsi

My point exactly, what did you run without the headers and torque converter? Both are mods that I didn't need get into the 9's with a PD.

Now on the other hand, PDs normally have higher cost than the Centri so you can have room for more mods, but drivability might suffer some with a high stall converter.

BTW - Great pass hogwild87, welcome to the 9 second club!

Actually, your "significantly more modifications" point is proven bogus here. You have a couple of mods that he does not (103mm tb with adapter, and aftermarket airbox). He has a couple that you do not. Balances things out.

[toohighpsi]

Originally Posted by hogwild87

10.13 at 139 pre converter and headers turns out converter is too loose has 13% slip so I'm swapping it out for a tighter converter and thanks I hope to be in the 9.5's at some point

I'm sure 9.5's wont be a problem, was the converter not locking up at the top end?

[toohighpsi]

Originally Posted by wnta1ss

Actually, your "significantly more modifications" point is proven bogus here. You have a couple of mods that he does not (103mm tb with adapter, and aftermarket airbox). He has a couple that you do not. Balances things out.

I don't think the centrifugals are running a Camaro SS stock air box - are they?
I'd be happy to throw the stock parts back on there next time out, pretty sure I can manage the same result.
Airflow is not the problem any of these SC LT1s, it's fuel and knock management (tuning) to make big power.

[hogwild87]

Originally Posted by toohighpsi

I'm sure 9.5's wont be a problem, was the converter not locking up at the top end?

Converter was locking between the 3/4 shift, that was with a 4c going with a 2c and procharger doesn't use stock airbox just inlet tube and filter that rests on top of driver side valve cover

[laynlo15]

I knew that converter was too loose since you lost over 4 mph but picked up over a tenth and a half. That was a wicked run. I think there is room enough for all the chargers. Glad there is such a variety for our LT motors. I chose the Magnuson cause to me its the best power adder with the least amount of mods needed. I just went 10.78@129 yesterday when it was 92 degrees and DA was 3650. Can't wait for some good air again but its gonna be a while here in Missouri and surrounding states. I see at least 2 or 3 tenths in my future. I had the rule book read to me yesterday at Gateway, may not be able to run there anymore

[hogwild87]

Originally Posted by laynlo15

I knew that converter was too loose since you lost over 4 mph but picked up over a tenth and a half. That was a wicked run. I think there is room enough for all the chargers. Glad there is such a variety for our LT motors. I chose the Magnuson cause to me its the best power adder with the least amount of mods needed. I just went 10.78@129 yesterday when it was 92 degrees and DA was 3650. Can't wait for some good air again but its gonna be a while here in Missouri and surrounding states. I see at least 2 or 3 tenths in my future. I had the rule book read to me yesterday at Gateway, may not be able to run there anymore

Yeah I should've been trapping 142 at least I think with the additional meth and timing but we'll see what happens after the converter swap next time out.

[PRAY]

Originally Posted by hogwild87

10.13 at 139 pre converter and headers turns out converter is too loose has 13% slip so I'm swapping it out for a tighter converter and thanks I hope to be in the 9.5's at some point

Dang, 13% slip. Maybe that is why my top end is gone and I am down about 4mph on top as well. You are also making quite a bit more power now than your previous 10.13@139 runs. Was it slipping once it was locked or just slipping up to the 3/4 lock up? I will have to log mine tomorrow.

[cfabrizio]

Gents,

Thanks for all of the info and shared knowledge. I think a PD is what I am looking for and will suit my needs the best.

Now the decision is down to Whipple or Magnuson. Who has the better quality and reliability?

thanks again....cf

[laynlo15]

We need to see how the whipples go down the track. If your gonna drag race it and have a car that will get 25 mph on the hwy also, pick the Maggie. Magnuson is a proven product on the LT1s and that's my opinion and I'm sticking to it. Ha.

[hogwild87]

Originally Posted by PRAY

Dang, 13% slip. Maybe that is why my top end is gone and I am down about 4mph on top as well. You are also making quite a bit more power now than your previous 10.13@139 runs. Was it slipping once it was locked or just slipping up to the 3/4 lock up? I will have to log mine tomorrow.

Not sure pray I just recall that's what ryan had said it was slipping percentage wise I would presume after locked