C4 engine swap options?
Thread Starter
2nd Gear
Joined: Jul 2024
Posts: 2
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C4 engine swap options?
im thinking about buying a 1984 c4 corvette roller i found, they originally came with the crossfire l83 engine but id like to know if a l98 from later year c4’s would be interchangeable, i looked into a lt1 and it could be a little tricky to do. also no Ls engines please, too expensive but if a standard 70s 350 engine would work i could do that too
Last edited by cooper1122; Jul 30, 2024 at 06:53 PM.
Thread Starter
2nd Gear
Joined: Jul 2024
Posts: 2
Likes: 0
i haven’t had a chance to take a look at the car and see the engine bay but the body’s in almost perfect shape, im just wondering about any issues id have with a engine swap, my guess is that there’s nothing left in the engine bay
Team Owner
Joined: Sep 2001
Posts: 62,170
Likes: 1,735
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
I would look hard at the LS in your shoes, but yes you can put an L98 in there, or modified L98 with Miniram/Superram, etc.
Melting Slicks
Joined: Mar 2002
Posts: 2,882
Likes: 766
From: Sligo PA
LS swapping an 84 is your cheapest option. That's why so many people do it. Especially if you're also swapping in a 4L60e or 4L80e. If you do it right you will make money on doing a LS swap.
Pull two engines and a transmission from your local pic a part. Get an LQ4 and a newer 5.3L with 799 or 243 heads. Also get either a 4l60e or 4l80e. Swap the 799 heads onto the LQ4 6.0l to boost compression a bit. Then sell all the parts you don't need. It will cost you around $700 for all the pick a part stuff and your profit will be over $1000. Grab a 0411 PCM from a Silverado and a $100 swap harness and you're in business. It's not expensive anymore.
If you really want to be fancy add a $300 camshaft and make 450 HP all day long.
LS and 4L80e swapping my 84 was and still is still a lot of fun. Im so happy I didn't build another small block.
Pull two engines and a transmission from your local pic a part. Get an LQ4 and a newer 5.3L with 799 or 243 heads. Also get either a 4l60e or 4l80e. Swap the 799 heads onto the LQ4 6.0l to boost compression a bit. Then sell all the parts you don't need. It will cost you around $700 for all the pick a part stuff and your profit will be over $1000. Grab a 0411 PCM from a Silverado and a $100 swap harness and you're in business. It's not expensive anymore.
If you really want to be fancy add a $300 camshaft and make 450 HP all day long.
LS and 4L80e swapping my 84 was and still is still a lot of fun. Im so happy I didn't build another small block.
