[SHE'Z 18]

Originally Posted by Z OH 6

My car makes 700whp. In the summer the OEM SC3s get pretty good grip, In the winter they're useless with that much power. I honestly can't see anyone making use of more than 700whp except at the track with sticky drag radials. That's why I stopped where I did when modding mine. Chasing HP numbers can be addictive until you can't use it, then regret often sets in eventually unless you just like to spin the tires.

Zoh6,
I like what the OP is trying to achieve and what you have achieved. Unless you’ve already listed it, would you mind sharing your mods that got you to 700 whp? I agree with many here that, that may be the “sweet spot” for us everyday drivers that want the flexibility to tear it up on the track, strip and streets. I’d be very happy with 700 as I really don’t have much interest in pushing mine to the absolute limits. Thanks to all for the awesome feedback… this has been a great thread..

[Z OH 6]

Originally Posted by arpad_m

Wiser words are rarely spoken My car dynoed at ~700 rwhp on 93 (735 rwhp on ~E60), and there is little point in anything more for the street with an RWD vehicle.

Learned my lesson with my previous Hellcat. I kept modifying it more and more chasing HP numbers. Ended up at 892whp SAE and it was completely unusable on the street, even with drag radials. Nothing short of a Mickey Thompson ET Street R would hook up. I had a lot of regret at that point because I didn't spend all my time at the drag strip and the car was a daily driver so I couldn't enjoy it on the street. When I bought the ZL1, I said I wouldn't make that mistake again.

[Z OH 6]

Originally Posted by SHE'Z 18

Zoh6,
I like what the OP is trying to achieve and what you have achieved. Unless you’ve already listed it, would you mind sharing your mods that got you to 700 whp? I agree with many here that, that may be the “sweet spot” for us everyday drivers that want the flexibility to tear it up on the track, strip and streets. I’d be very happy with 700 as I really don’t have much interest in pushing mine to the absolute limits. Thanks to all for the awesome feedback… this has been a great thread..

Vengeance Racing Stage 3 package.

RotoFab Big Gulp Cold Air Induction System
ATI Balancer
DSX 17% Lower Supercharger Pulley
GM Crankshaft Bolt
Gates HD Green Supercharger Belt
2” Kooks Stainless Steel Longtube Headers
3” Stainless Steel Connection Pipes with GREEN Catalytic Converters
GM MLS LT Exhaust Gaskets
Kong CNC Porting Service of Supercharger and Snout
Nick Williams 103mm Throttle Body
AFCO Upgraded Aluminum Race Heat Exchanger
Cordes Performance High Capacity Heat Exchanger Expansion Tank
Mighty Mouse Solutions Wild Catch Can
180* Thermostat
NGK High Performance Spark Plug Set
Vengeance Racing LT Plug Wires
Vengeance Racing High Temp Spark Plug Wire Insulators
Complete ECU Calibration

[ChadSZL1]

Originally Posted by TXCSSU

Curious on the 700 RWH for the OP, are you planning on going with a wider tire? I'm looking at possibly adding more HP (first I have to receive delivery, of course) but I also want to make sure that I'm adding useful HP. I hate the idea of just adding HP to give myself a big number, as I think I'd probably go with a Hellcat if I was only concerned about big HP numbers. I want to make sure that I have enough tire/brakes for the boost in numbers, otherwise I'm just creating a tire shredding device. I hope that the 325s from a 1LE are at least a part of the discussion.

I have drag radials for the street and I also run welds with ET street Rs on street and track. They hook

[Joshinator99]

Originally Posted by Z OH 6

Learned my lesson with my previous Hellcat. I kept modifying it more and more chasing HP numbers. Ended up at 892whp SAE and it was completely unusable on the street, even with drag radials. Nothing short of a Mickey Thompson ET Street R would hook up. I had a lot of regret at that point because I didn't spend all my time at the drag strip and the car was a daily driver so I couldn't enjoy it on the street. When I bought the ZL1, I said I wouldn't make that mistake again.

If you use it on the street a lot, just running a bigger pulley for lower boost. Run the small “kill” pulley on track days. Or use a boost controller on the bypass like Crawford sells, or use a product like Smoothboost to let you make boost level changes on the fly like the Crawford setup but using an electronic bypass instead of the vacuum one.

Of course, do as I say, and not as I do… I don’t do any of that stuff and have to drive like grandma on the street so I don’t spin if it’s under 80 degrees out…

[Z OH 6]

Originally Posted by Joshinator99

If you use it on the street a lot, just running a bigger pulley for lower boost. Run the small “kill” pulley on track days. Or use a boost controller on the bypass like Crawford sells, or use a product like Smoothboost to let you make boost level changes on the fly like the Crawford setup but using an electronic bypass instead of the vacuum one.

Of course, do as I say, and not as I do… I don’t do any of that stuff and have to drive like grandma on the street so I don’t spin if it’s under 80 degrees out…

That's nice. I didn't know they had a boost controller for these cars. I'll check that out.

[Joshinator99]

Originally Posted by Z OH 6

That's nice. I didn't know they had a boost controller for these cars. I'll check that out.

Yeah looks like Crawford offers a modified vacuum bypass that allows you to add a boost controller. But the Smoothboost one looks perfect, honestly. I’ll probably give that a try this spring.

Edit: here it is
http://www.smoothboost.com/

[SHE'Z 18]

Originally Posted by Z OH 6

Vengeance Racing Stage 3 package.

RotoFab Big Gulp Cold Air Induction System
ATI Balancer
DSX 17% Lower Supercharger Pulley
GM Crankshaft Bolt
Gates HD Green Supercharger Belt
2” Kooks Stainless Steel Longtube Headers
3” Stainless Steel Connection Pipes with GREEN Catalytic Converters
GM MLS LT Exhaust Gaskets
Kong CNC Porting Service of Supercharger and Snout
Nick Williams 103mm Throttle Body
AFCO Upgraded Aluminum Race Heat Exchanger
Cordes Performance High Capacity Heat Exchanger Expansion Tank
Mighty Mouse Solutions Wild Catch Can
180* Thermostat
NGK High Performance Spark Plug Set
Vengeance Racing LT Plug Wires
Vengeance Racing High Temp Spark Plug Wire Insulators
Complete ECU Calibration

What a set-up!!!! Bad A$$

[jorgesvlog]

Originally Posted by KingLT1

Did the video not show up in my previous post? I see it on my end.

Jorge's ZL1 A10

Flex sensor
Rotofab big gulp
Headers
Weld Laguna drag pack
E45
Pray ECM/TCM tune

1.5 60ft 10.1 @ 135 1/4 mi
1300da @ HRP

No blower port, no pulley. Would of likely already made a 9 second pass if life didn't get in the way.

You don't need a cam or larger supercharger to run 9's with these cars. Add blower port, pulley, fuel system, and 9's should be doable in average air.

Thanks King, Yeah the car as it sits will run a 9 in this cooler weather. I should be back at the track this month in some 60 degree 0 DA weather to go run the 9 as it sits!

[Evansa22]

Originally Posted by Z OH 6

Vengeance Racing Stage 3 package.

RotoFab Big Gulp Cold Air Induction System
ATI Balancer
DSX 17% Lower Supercharger Pulley
GM Crankshaft Bolt
Gates HD Green Supercharger Belt
2” Kooks Stainless Steel Longtube Headers
3” Stainless Steel Connection Pipes with GREEN Catalytic Converters
GM MLS LT Exhaust Gaskets
Kong CNC Porting Service of Supercharger and Snout
Nick Williams 103mm Throttle Body
AFCO Upgraded Aluminum Race Heat Exchanger
Cordes Performance High Capacity Heat Exchanger Expansion Tank
Mighty Mouse Solutions Wild Catch Can
180* Thermostat
NGK High Performance Spark Plug Set
Vengeance Racing LT Plug Wires
Vengeance Racing High Temp Spark Plug Wire Insulators
Complete ECU Calibration

How does your set up do heatwise with the 9.17 and afco Heat exchanger? Drag car, roll race, road course? Any info would be great

[KingLT1]

Originally Posted by JANNETTYRACING

In order to run E at the 700 RWHP level you need to have a cam with a 32% lobe.

If you do a cam and blower combo your looking at 800 on pump without trying too hard providing you have the right cam and combo.

See JRE superstreet brawler package.

That's no aux pumps, aux tanks, or meth just plain old reliable OEM intercooler system.

You would have to tone down the boost to get down to 700 on E.

Have you tested FIC +30 injectors and LPE HPFP on a stock cam car?

[KingLT1]

Originally Posted by Joshinator99

Yeah looks like Crawford offers a modified vacuum bypass that allows you to add a boost controller. But the Smoothboost one looks perfect, honestly. I’ll probably give that a try this spring.

Edit: here it is
http://www.smoothboost.com/

Or you could save money and simply limit torque by gear in the TCM tune. Set the torque per gear so that the throttle is limited until whatever gear the tires will finally hold full throttle. It works...GM did this by default on stock ZL1's and it can be adjusted. CSP did a video on it a couple years ago with his TreeL1 that was 800+whp.

[Z OH 6]

Originally Posted by KingLT1

Or you could save money and simply limit torque by gear in the TCM tune. Set the torque per gear so that the throttle is limited until whatever gear the tires will finally hold full throttle. It works...GM did this by default on stock ZL1's and it can be adjusted. CSP did a video on it a couple years ago with his TreeL1 that was 800+whp.

Good to know too.

[ChadSZL1]

Originally Posted by jorgesvlog

Thanks King, Yeah the car as it sits will run a 9 in this cooler weather. I should be back at the track this month in some 60 degree 0 DA weather to go run the 9 as it sits!

What’s your RWHP numbers now? I have similar setup and I am going to get my tcm tuned this spring. Can pray just tune the tcm as I already have a exam
Tune on E60