wont rev

goinbroke2 · 08-07-2014, 12:01 PM

Not to go completely in a different direction, but a personal experience.

Had a sbf that would hit 7000 in 1st (or neutral when I was getting mad) about 6000 in 2nd and 5800 in 3rd. Did all fuel and electrical diagnosing and was stumped. Was told valve springs by a well know engine builder but knew that wasn't the problem because the cam and springs were new.
Problem, the new springs were the wrong ones for the cam I had. Swapped springs and pulled to 7500 in each gear.
No load would rev clean, under load or engine accelerating slowly (in higher gears) and it would nose over and feel like the valves were floating. (hint, they were)

Just another area to look..

08-07-2014, 12:01 PM	#11
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 892 Likes: 1,631 Liked 393 Times in 153 Posts	Re: wont rev Not to go completely in a different direction, but a personal experience. Had a sbf that would hit 7000 in 1st (or neutral when I was getting mad) about 6000 in 2nd and 5800 in 3rd. Did all fuel and electrical diagnosing and was stumped. Was told valve springs by a well know engine builder but knew that wasn't the problem because the cam and springs were new. Problem, the new springs were the wrong ones for the cam I had. Swapped springs and pulled to 7500 in each gear. No load would rev clean, under load or engine accelerating slowly (in higher gears) and it would nose over and feel like the valves were floating. (hint, they were) Just another area to look..