Will the comp cams 911's work? JEG'S says they are good for .530" lift. If not which single springs will? I would really like to stay with singles but if I have to go to double valve springs I will? Having the heads machined is no problem. Are there any drawbacks to having double springs? What sorts of problems come with double springs? Which are a good set that will fit my application? What size should I have the heads machined to if neccesary? I have 89' cast iron center bolt L98 heads.

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1986 CAMARO Z28 ->
151,000 original miles, 43,000 on 89' vette 350 block, Holley 650 DP, Weiand intake, 1.6 rockers, 1 5/8" headers, no cat, 2 1/2" Flowmaster catback, Mallory coil, March pulleys, B&M Ripper shifter, T5 with 3.35 1st gear and 0 miles, 90% Centerforce clutch, 3.73 posi, Eibach 1" drop springs, Spohn LCA's, Spohn adjustable panhard rod, Subframe connectors, all bushings are urethane, 2 12" Sound Streams, 2 Infinity 6X9's, 2 Pioneer 6X9's, 800 watt Lanzar Vibe amp. ET 13.32@ 106.4MPH 3300lbs less driver and speakers Next mods-> Extreme Energy 268 cam, Holley street dom intake, ported heads.

1987 TRANS AM ->
73,000 miles, 305TPI, auto, gutted air box, gutted cat.

[This message has been edited by JDMZ28 (edited April 27, 2001).]

 

you could try K-Motion's single spring,which is good to .610 lift and has a seat pressure of 130# at 1.7" installed height.
Nitro Don

 

why do you care if it's a single or double spring? all works about the same and if you don't mind getting the spring seats opened up there should be no problem. i'd buy the spring from the cam grinder that they recommend to use with your cam.

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ICON Motorsports

1st & 3rd
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