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Thread: Decided to go LS3

  1. #1
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    Decided to go LS3

    I've been talking/thinking about going LS3 for a while now. I bit the bullet and purchased the GM LS3 495 hp crate engine. Should be here in a couple of days.

    Plan is to convert my LT1 style T56 to LS style. I'm still researching clutches, accessory drives, oil pans, etc. but I'm pretty close on all those. Lots of parts to buy, list is long.

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    Registered Member MP&C's Avatar
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    One step closer!
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    Registered Member JT56's Avatar
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    Congrats Rick

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    Registered Member WagonCrazy's Avatar
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    What's it going into Rick?
    1957 Nomad- LS1/T56 on C4 chassis
    1959 Fleetside Apache 1/2 ton, shortbed, big window, 327ci.

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    Registered Member NickP's Avatar
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    Nice piece!

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    Registered Member rockytopper R.I.P 5-13-2017's Avatar
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    Congrats Rick going to be killer!!!

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    WagonCrazy, it's going in my 55 Bel Air 2 door post - the one I've been working (and not) for years. I'm as slow as Cnut - this deal had better renew some enthusiasm.

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    Quote Originally Posted by Rick_L View Post
    I've been talking/thinking about going LS3 for a while now. I bit the bullet and purchased the GM LS3 495 hp crate engine. Should be here in a couple of days.
    Plan is to convert my LT1 style T56 to LS style. I'm still researching clutches, accessory drives, oil pans, etc. but I'm pretty close on all those. Lots of parts to buy, list is long.
    Congrats on the engine choice! All aluminum LS is the way to go! Question...Is that 495 HP version called the LS3 376/480? When I bought my LS3 376/480, I had assumed the 480 stood for the horsepower it makes. Is yours a different engine?
    Last edited by Bitchin'57; 08-17-2016 at 10:38 AM.

  9. #9
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    Quote Originally Posted by Rick_L View Post
    WagonCrazy, it's going in my 55 Bel Air 2 door post - the one I've been working (and not) for years. I'm as slow as Cnut - this deal had better renew some enthusiasm.
    Don't feel bad it took me 28 years to get my 56 back on the road. However you are probably like me in that you built several other cars in that timeframe.

  10. #10
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    Bitchin'57, they are the same engine as far as I know. GM part number is 19301358. I have seen it listed at both 480 and 495 hp, even currently. Even the page in the Chevy Performance catalog kind of says both - description is LS376/480, very next line it says 495 hp.

    I could have gone with the 525 hp version. Decided not to because the 525 hp is $1000 more, and as far as I can see only the camshaft is different. Plus the main deal is to be able to drive the car, and as a side bonus get some decent mileage - not to be fast as possible.

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