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Back To Install Guide List
| LT1 into first gen swap |
| Category: |
Miscellaneous |
| Difficulty: |
9 |
| Approximate Time: |
Depends on how fast you are :) |
| Application(s): |
67-69 camaro/firebird |
| Added By: |
blueta |
| Last Updated: |
2006-08-11 17:59:27 |
| Views |
12480 |
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Tools Needed:
Basic hand tools, wrenches, sockets, hammers, screwdrivers,etc. Engine hoist.
Parts Needed:
Lt1 engine, All brackets and accessories, Lt1 pcm/wiring harness, fuel line, electric fuel pump,headers/manifolds, electric fan, "old style" frame mounts for small block chevy. "old style" motor mounts for small block chevy.
Purpose:
The purpose of this mod is to get all the benefits of a fuel injected engine into your vintage iron. And the "oh wow" factor too!
How - To:
Step 1
Mounting the engine
Well first you have to get the correct frame mounts. You can order them from Year One . They are for a camaro with a sb chevy. Part #'s CD59LH, and CD59RH. You'll also have to get the old style motor mounts to go with those frame mounts. Year one also carries them. The engine goes in just like any regular small block chevy. The a/c compressor will not fit either. I'm sure you can finegal a way for the compressor to fit by making some other bracket for it but since I didn't need it I just made a bracket with an idler pulley for the belt to ride on. GM also makes an a/c delete bracket if you don't want to make your own go to http://www.gmpartsdirect.com and enter part# 10115875. Since I still used the BOP transmission I had to get a chevy engine to BOP trans adapter from here: http://www.jegs.com/webapp/wcs/stores/servlet/CategoryDisplay?lang=-1&catalogId=10002&storeId=10001&categoryId=21015&searchItemId=74967 . Obviously you can use a chevy trans and not need an adapter plate.
Step 2
Exhaust
Any set of headers designed for a first generation camaro with a small block will work. You'll have to weld in o2 bungs into the collectors though. The bungs came from here http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=86589&prmenbr=361. They are pretty cheap. I just used a set of long tubes and the fit was pretty good but they bumped the steering box. Any exhaust for a first gen camaro will fit.
Step 3
Fuel system
For my electric pump I used an MSD inline pump. You simply cut your factory metal fuel line and install it inline with it. Hence the name "inline pump" For the return line I just got 3/8 aluminum tubing from here http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=199610&prmenbr=361. I used most of the origional metal tubing up to the fuel filter. After that I bent up the 3/8 tubing and ran it to the inlet on the fuel rail. I then bent up a return line from the fuel regulator too the filler neck on the tank. I drilled and tapped a hole in the filler neck and just got a 3/8" barbed fitting from home depot. All connections from fuel lines to fuel lines/barbed fittings are made with hose clamps and high pressure fuel injection rubber lines (you can get it at local auto stores). I am gonna go back later and put some flares on the lines to replace the rubber hose but you can be cheap and keep it on if you want to.
Step 4
Wiring/Electronics
I got my harness here http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=2133&prmenbr=361. It's a painless kit for 94-95. I already had a 94 PCM and got it tuned by PCMForLess .I deleted all emmissions and VATS. You can tell Bryan Herter (pcmforless) what you have and he'll help you a lot with what you need done to your PCM. The poncho (and all other old gm cars) used a SI series alternator. The LT1 and newer gm cars use a CS series alt. A CS series alt. needs only 2 wires to make it run-the battery feed wire (goes to the terminal marked BAT), and a wire connected to the "L" terminal. The L terminal gave me some trouble to figure out. My painless harness didn't come with a connector for the alt. but luckly I had a spare stock harness that did. What you do is take the wire that goes to the L terminal and put a resistor (470ohm from radio shack) inline with that wire and a switched 12 volt source and it will charge.
Step 5
Cooling
I used an aluminum radiator from an lt1. I made some bottom brackets to hold up the radiator since the first generation f bodies use a different mounting system. If you use your stock radiator you will have to drill/tap a hole into your thermostat housing for the coolant line from the heads to go into.I've also been thinking that you could buy a "fuel line return kit" from jegs http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=5737&prmenbr=361 and maybe cut the upper radiator hose and install this inline instead of drilling into the housing. I'm not sure on the diameter of the rad hoses but you need at least 2" for this to work. I've also heard that if you use the stock rad you will need a set of rad hoses from a 96 corvette and they'll work as a direct fit for your rad or you can just make your own out of the flex hose. You will also have to use an electric fan because the LT1 water pump is driven off the cam instead of with a pulley (where you would normally mount a fan).
Step 6
Power steering
The LT1 uses a type 2 power steering pump. My pontiac stock pump is mounted on the drivers side of the engine compartment and the LT1 has it on the passenger side. The type 2 uses metric fittings and the old style uses standard. I had to get a high pressure line fabbed up to make it work. Remember that the high pressure side of a power steering pump is VERY HIGH PRESSURE. Don't risk using regular rubber line. Get one made up and save yourself some trouble.
Step 7
This is what it looks like all buttoned up!
Comments:
THIS IS NOT THE PLACE FOR QUESTIONS!!
Questions should be posted on the message board or emailed to the person who created this guide. Comments should ONLY be used to add information such as notes and more information for poorly edxplained steps or notes on parts/tools/steps etc.
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