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So after trying to get the 2X4 setup working right I figured out that the setup only works good with modified engine with a decent cam, it sure does not run good with a stock one and you cannot get it lean enough.
This leads me to my next problem, I put my old 350 that was in the race car/ street cars over the years in the my son's Biscayne in 2013. I went through it with new rings, bearings and cut the crank. I put a stocker type cam in it for him so it will run and get decent milage. Now after a year it started to vibrate at certain RPM and has gotten worse everytime I drive it. So far I pulled the converter back from the flex plate, pulled the fan, took off the pulleys and pulled the vibration dampner to see it that was it, but it still there. I thought it might be losing a cam but when that happens the lifters tick and there is no valve train noise. I am begining to think the crank is getting ready to snap as I had a 396 do this vary same thing back in the late 70's and once it happens the engine is junk. Funny thing is that this 350 has been in like 5 different cars, with the who's who of cyl. heads and carbs along with a ton on NOS. Now that it's apart I guess it coming out for a look. One would have thought It would have come apart on one of those 10 sec. passes, just lucky I guess.
This leads me to my next problem, I put my old 350 that was in the race car/ street cars over the years in the my son's Biscayne in 2013. I went through it with new rings, bearings and cut the crank. I put a stocker type cam in it for him so it will run and get decent milage. Now after a year it started to vibrate at certain RPM and has gotten worse everytime I drive it. So far I pulled the converter back from the flex plate, pulled the fan, took off the pulleys and pulled the vibration dampner to see it that was it, but it still there. I thought it might be losing a cam but when that happens the lifters tick and there is no valve train noise. I am begining to think the crank is getting ready to snap as I had a 396 do this vary same thing back in the late 70's and once it happens the engine is junk. Funny thing is that this 350 has been in like 5 different cars, with the who's who of cyl. heads and carbs along with a ton on NOS. Now that it's apart I guess it coming out for a look. One would have thought It would have come apart on one of those 10 sec. passes, just lucky I guess.
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