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Old December 24th, 2015, 08:40 PM
bigblockv6 bigblockv6 is offline
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Default Re: SO who came up with the GMC V6's???

Quote:
Originally Posted by TJ's GMC View Post
Big improvement for sure...and that's with the 4 barrel mounted on a 4 to 2 adapter. It should help even more when I have the intake machined to directly fit the carb. The split exhaust made for a nice improvement as well. I'll check out the sight for that issue! Thanks!
It will definitely make a bigger improvement once you machine the manifold. Many years ago I tried the 4 to 2 adapter and the results were abysmal, the idle would fluctuate and when the secondary's kicked in it would stumble for a couple of seconds. I suspect it was a very poor quality adapter that leaked vacuum. All in all there is only so much fuel that you can squeeze in a small opening.
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