T O P I C R E V I E W
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P.B.R .stangs
Member # 6544
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posted
I have a low mile lincoln lsc 5.0 short block. I was looking for the best cam to go with gt-40 turbo swirl heads and 1.7 rockers without worring about piston to valve clerance issues. any thoughts?
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90lxfoxbody
Member # 6947
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posted
b cam
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P.B.R .stangs
Member # 6544
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posted
whats evreyone take on the 5.0 crane cams
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RED@7kVERT *8850GT*
Member # 5909
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posted
B cam w/ 1.7's is a GOOD combo!!
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asskickn88
Member # 4957
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posted
quote: Originally posted by RED@7kVERT *8850GT*: B cam w/ 1.7's is a GOOD combo!!
Thats damn near an F cam if I remember right.
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ranger guy
Member # 4899
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posted
no its an x-cam
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asskickn88
Member # 4957
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posted
quote: Originally posted by ranger guy: no its an x-cam
Ok, the B cam with 1.7's is .510 lift 224 duration at .050 and 112 lobe center. The F cam is .512 lift 226 duration and 114 lobe center. The X cam is 542 lift with 224 duration and 112 lobe center. So you end up with an X cam with just under an F cam lift. Now that I look at the F cam, it should make a good off the shelf blower cam.
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F8LSN8K
Member # 7080
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posted
quote: Originally posted by asskickn88: quote: Originally posted by ranger guy: no its an x-cam
Now that I look at the F cam, it should make a good off the shelf blower cam.
yup! and N/A aswell
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JohnB
Member # 969
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posted
Trickflow stage 1.
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Pure Stang
Member # 7251
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posted
whats a e cam with 1.7's ....
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F8LSN8K
Member # 7080
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posted
im sure rr dont change duration as thats what the lobes are on the cam. and lift is right around .530 i believe. someone correct me if im wrong
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speeddhb
Member # 6593
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posted
Yes, rocker arm ratio will change duration slighly, if the valve opens sooner because of the higher ratio rocker arms it is effectivly changing duration, not much but it does change. May be 1-2 degrees. And BTW saying that a certain rocker arm W/ certain cam makes it like another is like comparing apples to oranges!!! There are sooo many different lobe profiles out there that even if the lift is the same and even duration that you can have 2 very different cams. AND the LSC motor (I think) had a dish piston without valve reliefs, SO I think you can effectivly run about 510 lift. Remember that the wider the lobe seperation that usually means that you can not run as much lift! TIghter lobes you can (usually) get away with a little more lift. AND if this is in a LSC I would put a stock HO cam in it with 1.7's and call it a day!! More tourqe and it will be faster!! Please check with clay!!!!
ASE cert machinist 11+ years!!!! [ October 02, 2007, 08:44 AM: Message edited by: speeddhb ]
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P.B.R .stangs
Member # 6544
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posted
would an f cam be to big with 1.7's and stock pistons?
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P.B.R .stangs
Member # 6544
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posted
The lsc pistons have the same valve reliefs as a stock 87 up mustang 5-liter.
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93mustang50
Member # 6642
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posted
i had a b cam with 1.72 rr and ported e7 heads in my 88, it made good power in the higher rpms, idled well and drove around town smoothly. [ October 02, 2007, 02:21 PM: Message edited by: 93mustang50 ]
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asskickn88
Member # 4957
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posted
quote: Originally posted by Pure Stang: whats a e cam with 1.7's ....
Just take the total lift, divide it by 1.6, take that number and multiply it by 1.7 and you have the new lift numbers. E cam: .498 with 220 duration at .050 with 1.7's its a .529 lift and .535 with a 1.72 rocker.
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F8LSN8K
Member # 7080
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posted
quote: Originally posted by asskickn88: quote: Originally posted by Pure Stang: whats a e cam with 1.7's ....
Just take the total lift, divide it by 1.6, take that number and multiply it by 1.7 and you have the new lift numbers. E cam: .498 with 220 duration at .050 with 1.7's its a .529 lift and .535 with a 1.72 rocker.
i was pretty damn close
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F8LSN8K
Member # 7080
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posted
quote: Originally posted by P.B.R .stangs: would an f cam be to big with 1.7's and stock pistons?
im pretty sure it is
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P.B.R .stangs
Member # 6544
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posted
thanks for all the info, im going with the b-cam
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