Hey all I have a set of iron LT1 heads on my car right now, and I have crane cams springs pn 270-10309-1 that are for iron LT1 heads. My question is will they work for aluminum LT1 heads? The jegs catalog has a diff pn for the aluminum heads that pn is 270-10308-1(both pn's are for spring and retainer kits). I was wondering if there is a difference that would make my springs fail on al heads or not. I've got my al heads but I just want to make sure that my springs are going to work.

Thanks
Josh

 

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