To my mind the kv6's main issue seems to be getting air in and out. From a power point of view I recon you need to junk the inlet and exhaust manifolds and fit an aftermarket engine management system maybe some head work as well should see good gains for a nasp trouble is nothing is off the shelf and good gains for a nasp ain't great for the money or 20-30bhp at best.
The only slightly viable way forward is to get forged internals and a supercharger I recon done properly you could get it over 300 Bhopal but again you're probably looking at best part of 10k.
The 3rd option and imo the best for£ vs bop is to add nos could easily see 250bhp for not a lot of money
|