Stick with Aircooled or Turbo LS 1991 Turbo

[Robbinthehood]

Hey guys, I am in a bit of a crossroads. I am purchasing my passed uncles former race car that was in the process of being converted to a street car before he passed. It is mostly complete with the exception of an ez69 control unit which I can’t find anywhere. Due to this, it is going to need an efi conversion which is costly in itself. A quote for motec was as high as 40k. I am familiar with ls engines and the like and have quite a few friends with performance and tuning shops and saw the Kennedy adapter and renegade racing cradle to mount an ls up. The car has a freshly rebuilt 3.3 but unfortunately the builder passed away recently as well and there are no invoices for the build so we don’t know how much power it can take. I was thinking of possibly selling the 3.3 and doing just a stock bottom and lc9 with a smaller turbo. It would be easier to work on, I could find more shops if anything drastic was needed and cost would be a wash almost if I sold the motor. This will be a forever car and not worried about retaining value or selling as it does not have a clean title. Do you think it would be worth it to just stick the air cooled motor back in or is an ls the smarter choice?

[YellowBee69]

That’s a tough decision…. Personally if the engine has been recently rebuilt I would throw it in and run it till she dies… The only reason I LS swapped mine was because it was a rolling chassis.

[Robbinthehood]

Originally Posted by YellowBee69

That’s a tough decision…. Personally if the engine has been recently rebuilt I would throw it in and run it till she dies… The only reason I LS swapped mine was because it was a rolling chassis.

Unfortunately, it’s not that simple. Full install with an emtron system with upgraded turbo, manifolds, intercooler etc was quoted around 30-40k. I would if I knew it was upgraded rods, pistons, head work and could make some power.

Does anyone know the limits of a g50/52 strength wide is with upgraded billet diff cover?

[Ryan_Cunningham]

G50 should be good for 500hp without issue.

And I’d keep the 3.3. That’ll be plenty of fun in this car. Plus you’ll lose a ton of value putting a LM LS in a G50 car.

[jmd88]

Hey @Robbinthehood - check your DM's.

[Cobalt964ruf]

g50/52 is a turbo box and will handle 7-800