-   ZL1 Discussions (
-   -   GEN 4 2.9 Whipple (

dadszl1 02-08-2019 09:16 PM

GEN 4 2.9 Whipple
6 Attachment(s)
So a few answers for a few questions:

We added a GEN 4 Whipple (clarification from Dustin) Same 2.9 New Rotor Design from the 3.0 unit. 3.25/9.17 Resulted in 18psi.

We also added an ice tank which has been the golden ticket to this whole setup. -10 Lines from the tank right to the blower and back.

IAT is 103-110.

Car is on pump and meth.

The results:

+72/+73 Wheel over the ported LT4 blower.
-.3 ET / + 7MPH.
9.74 @ 143 1.47 60’ 114 1/8th.

The shop has some documentation that this new GEN 4 blower is worth another +25 wheel over the previous unit.

Definitely has a 9.5x in it with an improvement in the 60’

No cam, no heads, no interchiller (😂)

Not gonna mention the R word this time but we are not aware of a faster ZL1 with the stock engine.

Might be looking at a trip north for some good air and more testing.

A special thank you to Howard Tanner of Redline Motorsports for his time and effort into getting this car dialed in. Also thank you to Whipple Superchargers for getting us this unit for testing.

Off to OSW tomorrow to show those Cadillac boys what’s up 💪

GT-ER 02-08-2019 09:37 PM

I'm trying to build a similar setup, 100% stock engine with fueling (except voltage booster on lpfp) with a whipple and trunk tank setup/larger H/X. I'm trying to stay 100% 93oct with no meth. I'm starting out with 3.5" upper and 9.10" lower.

I was kinda expecting bigger numbers from your setup dyno wise, but those times/traps are amazing. Ultimately, I'd take those 9's over an 800whp dyno any day. :D

Also, how can I tell what blower version I have? I bought it like 3 months ago.

laynlo15 02-09-2019 06:38 AM

Great numbers and stellar pass down the track. Congrats

RabbitZL1 02-09-2019 07:48 AM

Nice pass/numbers. Heads/cam next?

2018ZL1 02-09-2019 09:03 AM

WOW!! Thats hauling the mail right there!! Gives us all something to look forward too! :) Congrats!!!

dadszl1 02-09-2019 09:52 PM


Originally Posted by RabbitZL1 (Post 10432667)
Nice pass/numbers. Heads/cam next?

The car has a 9.60 in it. Now to work on the suspension.

GT-ER 02-11-2019 10:27 PM

How can you tell if you have a Gen 3 or Gen 4 whipple?

dadszl1 02-11-2019 11:09 PM

Thanks guys

Fifty 2 SS 02-22-2019 09:20 PM

Hi, were I can get the -10 fittings for the intercooler crossover? Thanks

laynlo15 02-23-2019 08:12 AM

Summit should have those.

Markoz28 02-23-2019 01:12 PM

I’m wondering what a cam with an increased fuel lobe will do for you? Any upgrades to the low side fueling?

Fifty 2 SS 02-23-2019 03:36 PM


Originally Posted by laynlo15 (Post 10444326)
Summit should have those.

The fittings that I'm looking for are the ones that goes to the crossover, not the hose ends.

Dnorris1369 02-25-2019 07:59 PM

If you order one now from them will it be the gen 4. It doesn’t show either or on the website

Sent from my iPad using Tapatalk

ramairroughneck 02-26-2019 12:42 AM

What intercooler pump are you running?

All times are GMT -5. The time now is 12:48 PM.

Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.