Estimated gains with HCI swap in LS3 powered 01 Z28
 

I have an 01 Z28 with an LS3 swap. Currently has the Tick Stage 2 LS3 229/244 cam only and put down 432/408 thru a 4l60 stock heads and cam. Getting ready to installed a Mamofied Fast 102 along with a set of ported GMPP LS3 heads and Cam Motion Titan King cam 232/244. Trying to get an estimated guess on power with this set up

I'll take a guess and say another 60 hp

I'd be happy with that especially thru an auto

Yep I'd be happy with that too. What does the car run now?

I haven't had a chance to run it at the track yet

Well for starters you probably want to fix what you have before adding heads. 430/409 for even a bolt on ls3 is pretty low must less a cammed one.

It's an automatic car on a known heartbreaker dyno in my area. Nothing to fix

I wouldn't stress the dyno numbers. If the build is setup and tuned right it will fly

I'm not. When I ordered the current set up from Tick they estimated it would be in the 430-440 range and they were pretty damn close lol

Then go run it and report back. Errybody's dyno is a heartbreaker.


What's a auto eat up?? 20hp at most......even then it's way down especially in the tq department.

Heartbreaker dyno??....another 20 maybe. Well now you're up to what a fbo ls3 should be but still down 30wtq. 409wtq for a ls3 is down no matter how you slice if you have the supporting mods for your cam.

Im confused.... "the 432/408 thru a 4l60 stock heads and cam." Then whats it make with the current cam? Whats the exhaust and stall?

432/408 with the current Tick Stage 2 cam and stock heads and intake. Yank 3600ss converter arh longtubes and gmmg catback

Ah, the way it was worded threw me off. I agree the numbers seem light but could be a Dyno thing.

yeah I just seen I worded it wrong now that you mention it

I'm more concerned about track times than dyno #s just never got a chance to go with the current set up. I guess I'll see what times it runs with the upgraded set up when finished

a lot more then 20hp if the converter was unlocked.

I guess he needs to get it to the track. A cammed ls3 stalled auto 4gen should walk into the 10s pretty easily.

exactly. Unlocked converter. Numbers were right in the ballpark where tick estimated them to be

The problem is i don't care where tick estimated them. Of course they'll be ok with not so great numbers when it's their stuff. Go to the track. A cammed stalled auto ls3 should have zero problems running 10s with any kind of traction at all. Hell a solid bolt on ls3 with a stall shoukd run 10s pretty easily.

BTW. ...what were the numbers before the cam? Have you ever ran the car?

What's the supporting mods on the car? ....valvesprings/headers/cat back/ewp/gear/9"?

I see you're on a stock ls3 intake. They are kinda poo. Especially in cammed cars. The long runner fasts are to. You need mid runners and spin dat bitch if you really want her to go.

Got any flow numbers for the heads? It'll most definitely help you up top as the stock heads run out of steam from my experience around 6300 rpm.

Stalled auto dyno numbers mean shit, if I were you I would tell everyone the lowest number possible that it made and then go and drag the shit out of them.

My Ls3 with a GMPP hot cam (LS3/480 crate engine) made 432rw/410tq through a dana s60 and t56. If you spec the combo right then I think you'll be closer to 500rw.
I ran the LS3 intake all the way up until 750rw on my d1sc setup. Didn't see the point or major gains of an aftermarket one at the time.