Swapping a 4.8 Vortec/4L60E into a 77 Camaro and have questions!

Discussion in 'High Tech Retrofits' started by Glossman, Mar 16, 2008.

  1. Glossman

    Glossman New Member

    Likes Received:
    Mar 14, 2008
    People's Republic of California
    First post!

    Hello! I'm new to this forum, but I some questions that were not answered definitively when I did a topic search. so I'm hoping I can get some help.

    I will begin swapping a 4.8/4L60E combo into my restored 77 Camaro LT. For those of you that will ask "why a 4.8", well, I got the whole setup with all harnesses (with PCM) and electrical for about $2400...and it's all got 9 miles on it! Also, with gas closing on $4.00, even 1 or 2 MPG makes a difference over the long run. Anyway, I've got plenty of LS1 experience, having owned a couple of late 4th-gen SS's, but the whole swap business is new to me.

    Here are my questions:

    Accessory drive: My setup came out of an Express Van but appears to have the truck accessory drive with the AC at the 7 o'clock position and alternator up top. I've read conflicting information about whether or not I'll have fabricate brackets or just drop this in, but basically I need to know if I can use the truck drive.

    Accessories part II: Another issue is that I've read the truck intake will not clear the hood and that an LS1 intake should be used. I have a spare lying around, but I've read in a couple of places that I'll have to re-work the accessory drive so that the LS1 intake plumbing will clear. Also, I've read that the thruck fuel rails will need to be replaced if I go to the LS1 intake...Is this all true? If it is, it just might be better to use the truck intake and "scoop" the hood, as I want to keep the engine as stock as possible.

    Electronic throttle: The engine has throttle-by-wire. There's very little information on getting this to work in a swap car (aside from going to an earlier cable-throttle). What do I need to get the ETC to work? Is it even worth the trouble?

    Factory gauges: How do I get the factory gauges to work for this. I know I can get a VSS converter that drives a motor for the speedo cable, but what about the tach. I know that Gen III V8s use a 5-volt bus, and due to the ignition system, the old-style tack won't work. Any way around this? Also, is there any way to rig up a driver information center to get all the factory engine data?

    Air Conditioning: I'd like to use the compressor that came with the new engine with my car's AC. Anything special that I need to do besides fabricate the lines? I know I'll have to convert to R-134a, but don't I have to make some sort of connection to the PCM to for idle compensation?

    Lastly, any idea on gas mileage? I'm gonna leave the stock 2.56:1 gearset in the back. I don't have a heavy foot, and I'm hoping to get 20 MPG on the highway with this setup.

    Any assistance would be greatly appreciated!

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.