86 IROCZ28

Just wanted to hear your opinions on which of these 2 engines is the prefferd option or has better performance out of these 2?

What would you put in if you had the choice??

slowV8berlinetta

if cost was not an issue, the LS1. Easy decision. One of these in the lighter thirdgen body would kick@$$.

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'84 Berlinetta, LG4, 700R-4, starwars interior, falling headliner, T/A t-handle shifter, trans cooler, open element, more to come in time and $$ www.hipergp@yahoo.com

89IROCZZ4

ZZ4 of course! Duh...

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1989 IROC-Z Camaro
12.90 in the 1/4
4.4 0-60
Specs/mods: V8, flowmaster, racing stripes and a few other things (Dr. Pepper Addict)

Dano 00TA

I'm not biased or anything but......LS1

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2000 NHRA Edition T/A
Pewter Metallic
A4 3.23 Gear w/GSC's
Whisper lid, MAF Ends, Ram Air Kit, Exhaust C/O
Best 60ft:1.94
1/8th:8.381@86.03
1/4:12.963@108.44

1989 IROC-Z 5.7 Dual Cat
Auto w/3.27 gears
Jet Stage 2 chip
Modified Air Box&MAF
AFPR&Air Foil

ws6formula89

Umm, I would definitely go for the ZZ4 or the ZZ5 motors, the ZZ4 has a quite good horsepower:dollar ratio, and easy to work on.

I'm saving up for a ZZ5 for my Formula, it will just eat LS1s for lunch when I'm done.

-Todd-

REZN8R

LS1 is more efficient and lighter. Any mods to that engine will probably be a bigger improvement than similar mods to a ZZ4, but will cost more too.

REVLIMIT

Personally if money wasnt an issue I would get the LS1. One reason is that its just more cool. The second reason is that its like others have said lighter. It would be nutz to have a LS1 3rd gen. Especially with a six speed *drool*

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Chris
91 RS 305 TBI
Eternal Rev

unknown_host

iTrader: (1)

LS1's dont nearly have the torque or torque that a ZZ4 has, however, LS1's are pretty cool.

PONTIMANIAC 90

LS1 is a good motor with a lot potantial for mods but I've read on this very board that it involves a lot of "mods" just to swap it into the Heavier 3rdGen.
If it's a dolar for dollar thing I would go with a ZZ4.

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1990 Formula
Factory:TPI-305/Dual Cat(230hp),5 Speed,3.42 rear.
Dealer instaled:Aluminum Drive Shaft
Mods:SLP air foil,K&N Filter, Accel:wires,coil cap,rotor.Hypertech Thermomaster chip,Stat,Fan switch,TES headers,MSD6AL,AFPR(50), Harwood fiberglass hood.
Flowmaster 3" Cat-back exhaust,TB coolant bypass,B&M Ripper shifter, Centerforce dual friction clutch, Ported & Siamesed Plenum matched to SLP Runners, March Power/Amp Pulleys, Richmond 4.10 gears. (???HP)

firbird

LS1 too much crap zz4 simple; ls1 $$$, zz4 cheap ; LS1 less hp&tq zz4 more hp&tq i dont know but right there would make up my desision but if you are going for more towards turning and stuff like autoX i would go to the ls1 because of its lightness

nothingssafe

if you have the extensive time to do it and the money for everything, go for an LS1. if you want an easy and quick swap, go for the ZZ4. and if you have a carb setup right now, go for the engine upgrade kit that GM has for carbed thirdgens. 310 HP out of the box, and direct bolt in.

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1995 Camaro
3.4 with 4L60E
Stock...for now

Currently being redone:

1988 Camaro
2.8 with T5
threw a rod...
Soon to have a 350 TPI out of an '85 vette...
http://www.nothingssafe.com

Jason E

Do a ZZ4 with TPI (or SLP modified TPI) and you will have a great motor for less than 1/2 the price of an LS1 swap (comparing new ZZ4 vs new LS1)

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Jason E

'89 Camaro RS
-Medium Grey Metallic
-2.8, A4, T-tops, 94k miles
-Hypertech chip, Accel wires/coil/K&Ns
-Alpine 60x4 and Bostons

'97 Z28
-30th Anniversary package (white with orange stripes)
-LT1, M6, t-tops, 45k miles
-Eclipse CD and 10" Aluminum sub in JL Audio Stealth box, Boston RM speakers, Xtant 403a amp

Speed Kills...Wanna live forever? Drive a Ford.
Long Live #3...

giovanhalen

Forget those mouse engines and drop in a big fat Rat!

Ray87Z

Just buy the ZZ4 shortblock and throw on a set of Fastburn heads and the LT4 HOTcam kit to build your own "ZZ430". Easy 430 hp, cheaper than a LS1 by far and with 430ish hp quite a bit more powerful... Not to mention worlds easier to get in the car and get setup.

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray

3504mula

Hey I was just wondering if anyone has heard of an LS1 swap into a thirdgen? I have never seen it before. I saw a swap in HotRod but it was for a 70 Camaro. They ran into a lot of problems....

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1990 Formula 350
Hooker Headers, Random Technology Exhaust, K&N, Airfoil, MSD 6A Ignition, Aftermarket chip, 3.42 Gears, Metco LCA's w/ brackets, F Body Perf. Panhard Rod and Strut Tower Brace, KYB AGX shocks in the rear, 1999 Formula Wheels, White Face Guage Overlays

REZN8R

Check the motor swap board. There's a guy in there that did it. I plan on doing it, but not for awhile.

Dano 00TA

Here's a link to a page of a guy that put a LS1 in a 87 IROC.

http://members.fbody.com/bradkiel/
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2000 NHRA Edition T/A
Pewter Metallic
A4 3.23 Gear w/GSC's
Whisper lid, MAF Ends, Ram Air Kit, Exhaust C/O
Nitrous Express 150hp kit
Best NA Times
60ft:1.94
1/8th:8.381@86.03
1/4:12.963@108.44

1989 IROC-Z 5.7 Dual Cat
Auto w/3.27 gears
Jet Stage 2 chip
Modified Air Box&MAF
AFPR&Air Foil

[This message has been edited by Dano 00TA (edited October 19, 2001).]