I’m interested in your opinions on and experiences with equipping a GT40 with twin turbos. I’ve seen pictures of a TT GT40 in the UK that was using a small Rover V8, and I think someone has told me of another TT GT40 in Australia. The appeal of a twin-turbo GT40, other than outright cool factor, would be abundant power on tap without all the lopey idle and poor street manners of a high-strung naturally aspirated small block. The downsides are complexity, fitment, heat management, and the drivetrain durability.
I expect to have an Incon twin turbo kit on my Mustang Cobra by this summer, and I’m familiar with Incon’s offering for the 5.0 Mustang. I believe I could locate a used Incon TT kit for about $3,500, but I’m doubtful that Incon’s cast manifolds and GTBB35 turbos would fit. If not, I’d have to fabricate some custom headers and dump tubes, and fit them to some appropriately sized turbos. Incon’s GTBB25s are nice and small, but can only flow enough to support 500 flywheel hp, which would probably be fine for a GT40. The nice thing about the smaller turbos is they would spool very quickly and would probably achieve maximum boost as low as 1800 rpm. I think the actual limiting factor in a TT application would likely be the transaxle and clutch, as even a 500 hp twin turbo would likely be putting down close to 600 lb-ft of torque.
Has anyone else done this on a small block Ford, or considered this approach?
Thanks in advance for your feedback.
I expect to have an Incon twin turbo kit on my Mustang Cobra by this summer, and I’m familiar with Incon’s offering for the 5.0 Mustang. I believe I could locate a used Incon TT kit for about $3,500, but I’m doubtful that Incon’s cast manifolds and GTBB35 turbos would fit. If not, I’d have to fabricate some custom headers and dump tubes, and fit them to some appropriately sized turbos. Incon’s GTBB25s are nice and small, but can only flow enough to support 500 flywheel hp, which would probably be fine for a GT40. The nice thing about the smaller turbos is they would spool very quickly and would probably achieve maximum boost as low as 1800 rpm. I think the actual limiting factor in a TT application would likely be the transaxle and clutch, as even a 500 hp twin turbo would likely be putting down close to 600 lb-ft of torque.
Has anyone else done this on a small block Ford, or considered this approach?
Thanks in advance for your feedback.