SB Mopar Valve springs?

George Mirza · 08-14-2010, 08:00 PM

Thanks guys,

John
I have used the Isky 3105 in the past, I got them from Don Studley. He used to coat them. They seem ok, but I'm looking for a little bit more pressure, Isky catalog put them at #130@1.700 and #320@1.200. I miss talking with Don, he was a nice man.

Old Racer,
I have been using the Comp 926, but I put a new set in at the beginning of the season, set them up the same as the last ones and they must be junk, lost a good 500-700 finish line rpm from the old springs. Unfortunately I didn't test them before I put them in. I wonder if anyone else has had a problem with this spring?

Jeremy,
Did you have to machine the spring seats to get the Chevy spring to fit?

Thanks again,
George Mirza 1236 D/SA '71 340 Duster

08-14-2010, 08:00 PM	#5
George Mirza Senior Member Join Date: Jan 2002 Location: North Attleborough Ma. Posts: 522 Likes: 0 Liked 0 Times in 0 Posts	Re: SB Mopar Valve springs? Thanks guys, John I have used the Isky 3105 in the past, I got them from Don Studley. He used to coat them. They seem ok, but I'm looking for a little bit more pressure, Isky catalog put them at #130@1.700 and #320@1.200. I miss talking with Don, he was a nice man. Old Racer, I have been using the Comp 926, but I put a new set in at the beginning of the season, set them up the same as the last ones and they must be junk, lost a good 500-700 finish line rpm from the old springs. Unfortunately I didn't test them before I put them in. I wonder if anyone else has had a problem with this spring? Jeremy, Did you have to machine the spring seats to get the Chevy spring to fit? Thanks again, George Mirza 1236 D/SA '71 340 Duster