freedomgliのブログ一覧

Mark Perry has built this incredible Mazda Miata V8RSpec race car for closed circuit competition against other Mazda Miatas built to the V8R specifications. Mark's car is powered by a L33 "small block" V8 engine courtesy of General Motors. This motor was originally used in certain 2005–2007 Chevrolet Silverado 1500 4WD and GMC Sierra 1500 4WD extended-cab pickup trucks and is sometimes referred to as the "Vortec 5300 HO" in marketing materials. It is lightweight thanks to a cast aluminum block and cylinder heads. Power output was originally around 310hp but with minor modifications it makes more power. This motor offers good value for the money compared to the more expensive LSx motors found in the Chevrolet Camaro and Corvette and provides healthy performance in the lightweight Miata chassis.

The specification list is long. I'll let the pictures do most of the talking.



Here is the donor car.


Modifications to unibody chassis are required to fit the larger motor and transmission








Welding in the roll cage


Paint








Engine


Bellhousing to attach Borg-Warner / TREMEC T-5 transmission


Transmission tunnel shifter location


Engine installed


Accusump to ensure constant oil pressure


Front brakes & suspension




Rear brakes & wheels




Control arms, subframe, chassis braces, exhaust




Racepak dash




Interior




Tooling to make carbon fiber body panels


Carbon fiber hard top


Front bumper support








Rear wing upright


Dyno tuning


Finished product

Joey Z., owner of the white Mazda Miata with Raydot mirrors detailed in my previous blog post, also owns this sweet 1986 Honda Civic Si featured in Motive Magazine. Click the link to read the article and see more pictures of Joey's classic hot hatch.