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Robert Simpson · 06-28-2011, 04:05 PM

Not knowing about FI motors. It does sound like weak valve springs, I would start there. I know on mine 5k was the real limit on my very weak valve springs. I also think you will see a bigger bang in the 60' with a slight converter. Good luck.

Robert

06-28-2011, 04:05 PM	#3
Robert Simpson Senior Member Join Date: Aug 2004 Location: Jacksonville, Florida Posts: 808 Likes: 7 Liked 20 Times in 12 Posts	Re: Problem after Gear Swap Not knowing about FI motors. It does sound like weak valve springs, I would start there. I know on mine 5k was the real limit on my very weak valve springs. I also think you will see a bigger bang in the 60' with a slight converter. Good luck. Robert