valve springs
05-05-2008, 12:42 PM
#2
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Springs will work, you need the correct locators and retainers so that they can be installed at 1.80 height.
when we did a 306/beehives we used 1.5 rockers because w/1.6 rockers you're getting very close to coil bind.
when we did a 306/beehives we used 1.5 rockers because w/1.6 rockers you're getting very close to coil bind.
05-05-2008, 02:37 PM
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WD
05-05-2008, 03:02 PM
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The 918 info;
Beehive Shape Ovate Wire Springs
The 26915 and 26918 Valve Springs are specifically designed for the LS1 Chevrolet cylinder head and can be used as stock replacements or in performance applications all the way up to 0.625” lift and at engine speeds to 7500 RPM. Engineered to fit stock heads with no machining, utilizing the stock valve seat and spring retainer. This valve spring can also be used in all applications with the specifications list-ed.
Installed Load: 130 lbs @ 1.800"
Open Load: 293 lbs @ 1.200"
Spring Rate: 313 lbs/in
Coil Bind Height: 1.085"
Outside Diameter: 1.290"/1.060”
Inside Diameter: .885"/.656”
Retainer: TI 772/Steel 774
Part 26918-16
Description GM LS1 Spring High Load Spring
Beehive Shape Ovate Wire Springs
The 26915 and 26918 Valve Springs are specifically designed for the LS1 Chevrolet cylinder head and can be used as stock replacements or in performance applications all the way up to 0.625” lift and at engine speeds to 7500 RPM. Engineered to fit stock heads with no machining, utilizing the stock valve seat and spring retainer. This valve spring can also be used in all applications with the specifications list-ed.
Installed Load: 130 lbs @ 1.800"
Open Load: 293 lbs @ 1.200"
Spring Rate: 313 lbs/in
Coil Bind Height: 1.085"
Outside Diameter: 1.290"/1.060”
Inside Diameter: .885"/.656”
Retainer: TI 772/Steel 774
Part 26918-16
Description GM LS1 Spring High Load Spring
Last edited by The Engineer; 05-06-2008 at 06:36 AM.
05-05-2008, 03:11 PM
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awesome. ok can someone tell me what accessories i need to go with these springs??? they dont have to be top of the line or anything just basic stuff. locks retainers etc... i have never pieced together the spring components and i would select the wrong parts i know lol
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05-05-2008, 04:36 PM
#8
understand that you need to machine the spring seats down to get the 1.8" installed height.
What Pampered-Z says about coil bind is true IF you install them at 1.7xx height like stock AND run a 1.6 RR you "CAN" see coil bind if you have a high lift cam.
Many people do run the 918's, or clones, without machineing the heads but that does not make it right.
Engineer posted the specs including "installed height". .100" variance in valve train componets (installed height 1.7' stock vs 1.8" bee hives) is huge and IMHO you should install all parts to spec.
Responses in this thread say "set them right..", to do so the heads need to be machined.
Only drop in spring I know of is the Crane 10308 (AL heads). Compare their specs to the spring spec on your cam card.
Not trying to critize your build, just pointing out what conflicts I see in your spring choice on "stock" heads. Bee Hive springs are very good and properly set up do their job better than earlier spring designs.
What Pampered-Z says about coil bind is true IF you install them at 1.7xx height like stock AND run a 1.6 RR you "CAN" see coil bind if you have a high lift cam.
Many people do run the 918's, or clones, without machineing the heads but that does not make it right.
Engineer posted the specs including "installed height". .100" variance in valve train componets (installed height 1.7' stock vs 1.8" bee hives) is huge and IMHO you should install all parts to spec.
Responses in this thread say "set them right..", to do so the heads need to be machined.
Only drop in spring I know of is the Crane 10308 (AL heads). Compare their specs to the spring spec on your cam card.
Not trying to critize your build, just pointing out what conflicts I see in your spring choice on "stock" heads. Bee Hive springs are very good and properly set up do their job better than earlier spring designs.
05-05-2008, 05:55 PM
#9
understand that you need to machine the spring seats down to get the 1.8" installed height.
What Pampered-Z says about coil bind is true IF you install them at 1.7xx height like stock AND run a 1.6 RR you "CAN" see coil bind if you have a high lift cam.
Many people do run the 918's, or clones, without machineing the heads but that does not make it right.
Engineer posted the specs including "installed height". .100" variance in valve train componets (installed height 1.7' stock vs 1.8" bee hives) is huge and IMHO you should install all parts to spec.
Responses in this thread say "set them right..", to do so the heads need to be machined.
Only drop in spring I know of is the Crane 10308 (AL heads). Compare their specs to the spring spec on your cam card.
Not trying to critize your build, just pointing out what conflicts I see in your spring choice on "stock" heads. Bee Hive springs are very good and properly set up do their job better than earlier spring designs.
What Pampered-Z says about coil bind is true IF you install them at 1.7xx height like stock AND run a 1.6 RR you "CAN" see coil bind if you have a high lift cam.
Many people do run the 918's, or clones, without machineing the heads but that does not make it right.
Engineer posted the specs including "installed height". .100" variance in valve train componets (installed height 1.7' stock vs 1.8" bee hives) is huge and IMHO you should install all parts to spec.
Responses in this thread say "set them right..", to do so the heads need to be machined.
Only drop in spring I know of is the Crane 10308 (AL heads). Compare their specs to the spring spec on your cam card.
Not trying to critize your build, just pointing out what conflicts I see in your spring choice on "stock" heads. Bee Hive springs are very good and properly set up do their job better than earlier spring designs.
05-06-2008, 08:13 AM
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WD
05-06-2008, 08:43 AM
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no they are a good batch. my friend toasted his lifters and cam from oil starvation and am doing the swap for him and we bought a cam and these springs together and then i found him a killer deal on some 241'S WITH 918's that were new. he told me that they were all mine if i wanted them.
05-06-2008, 08:44 AM
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I have a complete set of 918s, retainers and locks, in the original Comp box w/ lot numbers. They were used only one season, then I upgraded to PAC-1518s and titanium retainers.
WD
would you sell the acc. to the springs to me?
WD
would you sell the acc. to the springs to me?
