1999 LS1 upgrades

Reply Subscribe

Thread Tools

Search this Thread

Oct 1, 2017 | 01:43 PM

jeff morgan

Thread Starter

Staging Lane

iTrader: (2)

Joined: Jun 2008

Posts: 86

Likes: 0

From: Delaware

1999 LS1 upgrades

Have a stock 99 Z28 convertible weekend cruiser with 95,000 miles. Planning on making some changes this winter. What would be the best bang for the buck upgrades for HP? Not looking to break the bank, just looking for some extra, reliable HP. Thanks for any help.

Oct 1, 2017 | 01:55 PM

98CayenneT/A

TECH Junkie

Joined: Nov 2013

Posts: 3,913

Likes: 366

From: White Bear, Mn

Some advice... go to Google and punch in Ls1 upgrades and put Ls1 after it and you will literally get more threads than you can read.

With the said, are you automatic or manual?

Oct 1, 2017 | 02:05 PM

jeff morgan

Thread Starter

Staging Lane

iTrader: (2)

Joined: Jun 2008

Posts: 86

Likes: 0

From: Delaware

manual. I know there is a ton of info out there. Really looking for some real world advice. Combos that people have used with no issues.

Last edited by jeff morgan; Oct 1, 2017 at 02:13 PM.

Oct 1, 2017 | 03:02 PM

HCI2000SS

TECH Senior Member

iTrader: (2)

Joined: Aug 2012

Posts: 11,137

Likes: 20

From: Howell & Fenton MI

What kind of budget are you looking at?

Oct 1, 2017 | 03:52 PM

jeff morgan

Thread Starter

Staging Lane

iTrader: (2)

Joined: Jun 2008

Posts: 86

Likes: 0

From: Delaware

3 - 5k

Oct 1, 2017 | 04:00 PM

G Atsma

TECH Senior Member

Joined: Jun 2016

Posts: 22,308

Likes: 3,625

From: Central Cal.

Start with a good exhaust, whatever is legal in your state. Working up from there, find an LS6 intake manifold. How much lope do you want at idle? That will help decide the cam. After that you should get your heads ported, or find some 243 or 799 casting heads.
With all this, do some searching on here to fine tune any decisions on any of these parts.
Horsepower target? You never did say...

Oct 1, 2017 | 05:02 PM

HCI2000SS

TECH Senior Member

iTrader: (2)

Joined: Aug 2012

Posts: 11,137

Likes: 20

From: Howell & Fenton MI

Hell for 5k you could forget all the little stuff, do a Procharger and really have some fun lol

Trending Topics

Trans cooler updated information

11

247
418 Stroker Build

11

409
Engine damage diagnosing

65

3.2k
Cylinder leak down higher on one

12

435
Why are my fans on constantly? Holley EFI

6

280

Oct 1, 2017 | 07:33 PM

jeff morgan

Thread Starter

Staging Lane

iTrader: (2)

Joined: Jun 2008

Posts: 86

Likes: 0

From: Delaware

No real horsepower goals. Just want more than what I have. I need to put some money into trans/clutch/rear gear swap. I think at minimum a cam/head/intake swap. Also, while motors out oil/water/fuel pumps, headers. Just not sure what head/cam would be best, I do want a lope at idle but streetable. Everyone seems push the FAST 92 intake, but I don't want to buy a new one. What would be a step down from that?