crane cam dual springs 99893
07-07-2007, 03:23 PM
#2
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the 99893 are not for ls1
http://cranecams.com/index.php?show=...&lvl=3&prt=123
they are for
Chevrolet Big-Block
Chrysler-Dodge-Plymouth Big-Block
Ford Big-Block
what you are looking for are the 144833 which are not listed on their webpage. yes, they will fit on stock heads without modification. i am using them. bought them from vinci high performance.
http://vincihighperformance.com/NEW%...TS%20PAGE.HTML
middle right of the page
http://cranecams.com/index.php?show=...&lvl=3&prt=123
they are for
Chevrolet Big-Block
Chrysler-Dodge-Plymouth Big-Block
Ford Big-Block
what you are looking for are the 144833 which are not listed on their webpage. yes, they will fit on stock heads without modification. i am using them. bought them from vinci high performance.
http://vincihighperformance.com/NEW%...TS%20PAGE.HTML
middle right of the page
07-07-2007, 06:47 PM
#3
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no i have those the cam im installing is a .627 and .641 lift pat g recommended the 99893s
Last edited by Rob@EFIAlchemy; 07-08-2007 at 03:18 PM.
07-07-2007, 06:50 PM
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Originally Posted by bluenyghthawk
no i have those the cam im installing is a .627 and .641 lift pat g recommended the 99839s
http://cranecams.com/index.php?show=...&lvl=3&prt=122
AMC V-8; Chevrolet Big-Block w/1.880" installed height
again, the correct part number is 144833 for the newest designed dual springs for LSx motors.
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07-08-2007, 03:59 PM
#10
Originally Posted by mrr23
the 99893 are not for ls1
http://cranecams.com/index.php?show=...&lvl=3&prt=123
they are for
Chevrolet Big-Block
Chrysler-Dodge-Plymouth Big-Block
Ford Big-Block
what you are looking for are the 144833 which are not listed on their webpage. yes, they will fit on stock heads without modification. i am using them. bought them from vinci high performance.
http://vincihighperformance.com/NEW%...TS%20PAGE.HTML
middle right of the page
http://cranecams.com/index.php?show=...&lvl=3&prt=123
they are for
Chevrolet Big-Block
Chrysler-Dodge-Plymouth Big-Block
Ford Big-Block
what you are looking for are the 144833 which are not listed on their webpage. yes, they will fit on stock heads without modification. i am using them. bought them from vinci high performance.
http://vincihighperformance.com/NEW%...TS%20PAGE.HTML
middle right of the page
07-08-2007, 04:19 PM
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a #99893-16 springs are 1.460 OD., and will not fit in a stock ls1 spring pocket without maching done to head. they also will require different retainers as well. if you want a spring with close to similar pressures open/close, the #144833-16 will give you this and is a direct ls1 replacement with no maching required, but does use a different retainer though, or try there behive #99831-16 spring, it drops right in with similar pressures and uses stock retainers.
07-08-2007, 04:59 PM
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Originally Posted by speed_demon24
Just because they aren't listed as LS1 springs doesn't mean they won't work on LS1's....
07-08-2007, 05:09 PM
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Originally Posted by bluenyghthawk
sorry he said 99893 would be good for the high lift ill be running
07-08-2007, 06:00 PM
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Originally Posted by vettenuts
Why does someone come into a thread, drop a bomb and then not respond? I have no clue what springs he is referring to 
07-08-2007, 11:27 PM
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Originally Posted by bluenyghthawk
i think he recomended them because of the high lift at .641
the 144833 springs are good for .650 lift. when the machine shop was putting my springs on and asked about what height i wanted, he said i have plenty of room to .700" lift before coil bind became an issue.
here's the specs for the 144833 springs off of vinci's website:
160 lbs @ 1.750
400 lbs @ 1.150
will handle .650 lift with ample coil clearance
07-09-2007, 08:03 AM
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well i already have a set of 833 but i wasnt sure if they were gonna be able to take the abuse and patrick g said if i had a 893s id be fine but i dont want to go through all that if i dont have to. thanx guys
07-09-2007, 09:33 AM
#19
The 99893 springs will work but it will take a little extra machining to use them . I had a PSI spring with nearly identical spring dimensions except the spring had higher pressures everywhere . There are retainers which will still allow the use of 8mm valves . I looked @ the 99893 but I didn't know much about who actually made the spring and the quality . Competition Products buys the same spring in bulk and saves you a little money . You should look @ Ferrea valve springs , they have some nice drop in springs that will handle upward of .700 lift depending on your installed height and have the pressure , just make sure your lifters are up to the task . I hope you wouldn't use that much lift , spin it high , and expect stock lifters to live . I found the Ferrrea's to be priced a little high (prices from CV Products which aren't great but they have a lot of everything) but they're available and drop in without machining which can save money and time if you were just going to swap cam & valvetrain . If you need anymore info PM .