Eagle 5.7 with boost 11.14 @ 125.5 Edit: now 10.38 @ 132.6

Hit up the track yesterday with surprising results. Combo is a 2010 Challenger 5.7/6 speed. Cable drive throttle body, vvt disabled, 80 lb injectors, Bullseye 66mm turbo with 7 psi on 93 pump gas. Jeep weighs 3990 lbs. The 11.14 was on a really soft launch, by the time I started gaining on it the transmission wasn't playing nice so no 10s yet. This little 5.7 is a workhorse, I'm impressed with it. Made 535 to the tire at 5500 rpm last weekend.

First time to the track with it?

No, I've gone a couple times with this one and also did Drag Week with it last year. Just picked up a bunch of mph since last time. Previous best was an 11.46 @ 120.2

What is the story on the engine? Aftermarket stuff? Heads ported??

Just the vvt locked out, injectors, throttle body, and truck oil pan to clear the crossmember. The front cover has been off to lock the vvt but aside from that the motor has never been apart. Still on the original spark plugs that I re-gapped to .030 because it was blowing out spark. It's actually on the original clutch as well. Motor and trans have roughly 63k miles on them, 6500 of those with the turbo setup.

That is an awesome combo man, looks like fun.

What frame/suspension are you using?

Thanks for posting, this is a favorite of mine.

Thanks! I know it won't be the most popular here but it's on a '71 Chevy C10 chassis shortened 17" and reworked suspension. The whole truck is a mutt, whatever works and is cheap.

Very cool build. Run what you've got. Wish my Challenger would run like that.

That's a sweet build and it runs hard. Congrats!

Drove it to the track again yesterday and put the best stats from those two slips together. Went 1.57 sixty and 10.97 @ 125.2 on the first pass. Slapped on the 315/35r17 hard street tires and managed a 1.99 sixty, 11.50 @ 124.2 on the second attempt. Super happy with this simple motor combo.

That is a beast man. Nice, "simple", and working like a champ...

I was going to say you have the mph for 10's. I know boosted cars usually mph more then N/A as I am but glad to see you got your 10. It seems N/A usually 60 ft a little better then boosted cars also but you are running real good. Ron

Yep, there's definitely a good bit left in it with a good clutch and some suspension changes. I just don't want to sacrifice handling for et since it's built to do autocross with. The 11.50 was in full autocross trim and the 10.97 was just a tire swap, no suspension changes.

I'm still amazed at the mph, it's 10 mph higher than I ever thought it would be.

That's a cool truck.

Great job. I love how simple it is, and just plain works!!

Thanks!

I did something different with it this weekend, did my first autocross. My friend drove it to 3rd in CAM combined, I didn't do as well but still had fun.















[img]http://i30.photobucket.com/albums/c324/ghinmi/1983%20Cherokee/h1r1s4_zpsl2gqnpcg.jpg[/img]
[img]http://i30.photobucket.com/albums/c324/ghinmi/1983%20Cherokee/h1r4s4_zpsqoycrbmu.jpg[/img]
[img]http://i30.photobucket.com/albums/c324/ghinmi/1983%20Cherokee/h1r3s5_zpslqdzwdit.jpg[/img]
[img]http://i30.photobucket.com/albums/c324/ghinmi/1983%20Cherokee/h1r4s2_zpsjinnwp04.jpg[/img]
[img]http://i30.photobucket.com/albums/c324/ghinmi/1983%20Cherokee/h1r4s1_zpscgx0pkwl.jpg[/img]

Awesome....

Some updates. The red Jeep got wrecked last summer and I built a new one. Same drivetrain. Did pistons/rods and no other changes other than upping the boost. The little 5.7 and s366 keeps performing. Has been 10.90 @ 130 on the low profile Continental street tires and 10.38 @ 132.6 on a 28x10.5 slick. The 10.38 pass was actually very soft, only went 1.56 sixty foot because the clutch was on it's way out. Has been 1.46 so should go a good bit quicker with all that mph in the Spring.






Also drove it from Michigan to Atlanta, did Drag Week, and drove it home. 2805 miles in a week and 13 passes.


Have also done some autocrossing with it, you can see how linear the power is and how little lag the tiny turbo has.

What pistons/rods and how much compression/boost now? New clutch and 9s next?

What does it weigh?

It's got the MMX drop in piston/rod package. I actually didn't even figure the compression, just slammed them in and sent it. Quick and dirty. It didn't really need them but I just felt more comfortable having them for Drag Week because I'd be so far from home with no backup plan.

I actually put another Hellcat clutch in it a couple days ago. Not sure that it's got enough steam to go 9s but it keeps getting faster so who knows? Definitely didn't expect the 66mm to make as much power as it already has.

It's just a shade under 4000 lbs usually. Was 3960 right after the 10.38 pass.

love this thing.

How much boost are you running now? I'm building a similar combo, little bigger turbo and lighter vehicle... it may end up being quicker than I realize based on what yours run.

Me likey, fun ride.

How cool is that!!! Nice ride!!

How much boost/power did you end up making with the stock engine?

The quick pass was on 16 psi. It'll make more but goes slower, all out of turbo. With some fuel pulled out of it I think I can squeak some more boost out of it. And add some timing too. It's a very, very conservative tune.

On the stock stuff it had been 10.50s @ way less mph and a ton better sixty. I forget the mph, sub 130 though. I want to say it was at 10ish psi. It was picking up big power with timing increases but I was afraid of the stock stuff.

Engine compartment pic? Turbo location?

I've got a 76mm T6 that I was going to build an EZ headed 400 from parts I have for my Coronet, but thinking more and more about the 5.7. I'm interested in just taking an OEM pull out and starting rather than building one, don't need crazy power (yet). Just a step up from my Fury's very docile turbo setup.

The turbo in the red one was passenger side up by the firewall, blue one is passenger side front mount.

What engine management are you using?

It's on holley HP efi. I went with the cable drive throttle body so that I didn't need the Dominator. Kind of wishing I would have sprung for the extra money now for the extra inputs and outputs.

That is the coolest Jeep ever! What wheel and tire setup are you using for autocross. Looks awesome!

Thanks! For autocross and street I've got 17x11 C4 Corvette ZR1 wheels. Cheap and effective. And 275/40zr17 Continental ExtremeContact Sports. It's a tradeoff, I could go a bunch bigger but nobody makes a good 17" tire in wide sizes and the 18" stuff gets expensive. It's working pretty good for the budget wheels/tires though.