500efi upgrade kits.
09-23-2009, 09:22 AM
#11
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AFR full cnc heads with the hard anodiize option, a cam, pushrods, fuel pressure regulator mod, some gaskets and find a shop that knows how to tune. Should cost around $3,500-$4,000 a side. This should bump you 100hp easy. If you want to squeeze another 8-10hp out of it add the harding marine crossover with the idler pulley. As mentioned earlier, 500EFI's like Whipples / boost, but plan on major drive upgrades as well.
09-23-2009, 09:31 AM
#12
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Mine are the carbed 500's. I don't have my dyno sheets with me but they were around 650 at 5800 rpm. Tyler also did a 500EFI motor for a buddy of mine and he loves it. Tyler reprogrammed his computer after all the upgrades and he says it idles nicer now than it did when it was stock.
