Cory@LS2PortWorks

A few know that I've been working on this project for a little over a month now. A low mileage Iron 6.0 (LQ4) came to me as partial trade for a supercharger and I got the urge to do something fun with it. Its going into my 1991 Convertible.

For this build I'm using the following parts:

Stock Iron 6.0 shortblock
ARE ported LS1 heads
Comp Cams 232/238 .595/.605 lift cam on 114 LSA
85mm MAF
LS6 intake
Stock LS1 Throttle body (will be ported)
2001 and up Corvette fuel rail
Full corvette accessories (except for A/C... might add later)
ZO6 two piece Oilpan
ZO6 exhaust manifolds

4L60E built by Speed Secrets (from LS1tech.com and Monroe WA)

Conversion Wiring Harness from Nelson Performance (from LS1Tech.com and Performancetrucks.com)

Here are some teaser pics to whet your appetites

http://community.webshots.com/album/547322361DJQTit

This will be coming along pretty quickly. More pics will definitely be available as well as lessons learned as I go!





Link to the LS1 cover alignment tools! [Added 2/19/2006]

http://community.webshots.com/album/547752798qMpudc


Link to the C4 vs C5 powersteering pump pics

http://community.webshots.com/album/548383126qgLSNx


Link to Yank Convertor pics and SBC vs LS1 flexplates

http://community.webshots.com/album/548384518qJKELn


Link to chassis mod pics

http://community.webshots.com/album/548728061ztMLZi


Link to D36 C-beam mods

http://community.webshots.com/album/548729058lMvcyV


Link to some recent update pics

http://community.webshots.com/album/548720924eUXEoI


Link to some new wheel pics

http://community.webshots.com/album/548905341QspLbb


Link to Halltech air intake set up

http://community.webshots.com/album/548906028xpTHSc


Link to fuel system build

http://community.webshots.com/album/548947540pEGbaa


Link to completed exhaust build

http://community.webshots.com/album/549106450VQJyHG


Link to April 8-9 progress

http://community.webshots.com/album/549363857oxzkpr


Link to coolant system mods

http://community.webshots.com/album/549474979wAupUr


Link to Pimp *** wheels

http://community.webshots.com/album/548905341QspLbb


Link to Better pics of engine in the chassis!

http://community.webshots.com/album/549653918mgTjda



These are pics from the final engine build:

http://community.webshots.com/album/551833004ivYxrd



These are pics of the Wireharness before complete install:

http://community.webshots.com/album/551833395wUyuCP



There are a couple of new pics here of the last, critical step in the coolant system connection:

http://community.webshots.com/album/549474979wAupUr


Here is a early pic of the Battery and power distribution situation.

http://community.webshots.com/album/551832920nXfCgg


Link to Gauges

http://community.webshots.com/album/552510560QnRqpi


I'll keep posting shortcuts to the pics on this front page as I go for those who only want to be able to grab pics quickly. Many of the pics have notes attached... but more notes are in the posts

kpforce1

SWEET! Another convert... lol

cv67

Awesome, youll love the torque those motors put out! LS engines rock

Cory@LS2PortWorks

And I'm not afraid to show how it's done either

Cory@LS2PortWorks

I know... my 2004 H2 turned 13.86 in the 1/4 mile. It was a 6.0 with a Magnacharger Radix, Cam and a lot of tweeeeeaaaaaaaking.

I'm going all LSX based in my garage with nothing less than 350 rwhp by the time they're all done

TwoFast4Lv

Very Nice Cory! Gotta love the projects

Will be nice to see you breaking...er...I mean racing some thing under two tons

Cory@LS2PortWorks

If you can't kick *** with it, break it, then rebuild it bigger, faster, and stronger then it just really isn't worth doing now is it?

bogus

Sweet! We have a big thread going on installing an LSx into a C4, check it out and include your insights!!!

Cory@LS2PortWorks

It's time for a new thread. And a new approach. Hence the Iron block and ZO6 manifolds. We know the Camaro parts fit. It's time to push the envelope in a slightly different direction.

mseven

Looks great, I will look forward to redaing about all that you will be doing to make it happen. If this kind of swap in a c-4 can become a little more standardized it would certainly be the way to go. VERY COOL !!

TM-Z06

With all the other cars that are swapping LSx into them, it's about time we started doing this in the C4.

I certainly am giving this some thought......(LS2 stroker or LS7).

Jeffvette

I don't think people have been afraid to show it done before hand RacerX had lots of photos.


New approach using a iron block? It weighs 125 lbs more than the alum version. And unless you are going heavy boost is detrimental. And why hinder the design using stock manifolds?

New approach would be a 6 speed.

bogus

A block is a block. they all fit the same. That's why I feel this should be part of the bigger thread.

We get new threads on this about every 6 days, I ain't kidding. I for one would like to see this knowledge kept together.

The block you are using isn't going to fit any differently than the aluminum unit. It's just heavier. And from a truck, which could cause you emissions problems, depending on your state.

Slalom4me

Let's be supportive.

LS1Tuner and TracerX got a rough ride on this LS1/C4 subject years
ago - they took their knowledge and went to play somewhere else.

CHarris85Vette, I think there's room to start a new thread - one about
an actual swap in progress. Your ball, your bat - keep the game in
play ....

.

Cory@LS2PortWorks

The other thread has more questions than answers and links that lead in circles. Many pics that have been posted seem to either be taken down or mysteriously gone.

I'm not trying to hide any racing secrets and I'm not stripping the car to race it. I've seen the pics of the car with the heater box removed. Great for clearance... but that doesn't fly for non-california street cars.

My swap may not be 100% emissions legal. I'm not concerned with that as I live in a non-emissions testing county. I will, however, have cats on this and it should pass a sniffer test and visual cat inspection.

I'll be taking pics throughout and providing comments. As for the 6 speed conversion. I don't want a 6-speed, therefore that will remain for someone else to figure out.

The iron block should pretty well solve one issue that concerns quite a few interested in this conversion... that of post-swap front end height. The iron block should not significantly impact that.

Its also important to note that the 6.0 iron block is abundantly available and very affordable as it comes from trucks. It's also good to note that the iron block is preferable for most big power builds one you swap to forged internals.

In any case... this post will be more complete than what's out there.

FD2BLK

Great job and keep us informed with updates as you go. I think it will be a great reference for others who may do an LS1 Swap. A while back I did an LT1 swap and had a ton of nay Sayers telling me how it would cost 10 grand and I was better off sticking the money into the old motor, well for 3K the motor was in and dynoed 360 RWHP with a lot more potential. I had little or no reference data on the CF but did find a lot of good information on F-body sites, unfortunately not all the info pertained to the C4. Things that you have shown such as the assy's and the trany are great info for the next guy so a big thanks and keep up the good work.

Jeffvette

Most pictures get pulled down as people sell the car, lose the bandwidth to host or something has changed.

Good luck.

bogus

I actually WANTED to do the 6.0 litre truck block conversion, alas, CARB (re: EPA) does not allow it. And CARB/CA DMV requires documentation as to the source of the engine... it comes from a truck, I am hosed.

you are 100% correct on the advantages of the iron over the aluminum... cost, ride height, block strength. It's all there.

The option is to do all the work, then after it's done and recorded by CARB, switch over! But that sure is a waste of energy...

TwoFast4Lv

Doing a 6spd would include a ZF. lucky they are dirt cheap now

Un-fortunately this means using the crappy ZF/LTx style clutch.

I am sure a talk with McLeod could arange the correct parts. There may be some tail and error but if you really want a 6spd it would be worth it

-=Jeff=-

This is cool.. It would be nice to reuse the Zf6 but with the T56 conversion that is okay too..

My questions is how do you plan on making the CCM Happy with the 1991 ECM Gone??