I am currently in the process of doing an l31 vortec swap and the one problem i'm having building this motor is the valve springs. Ive heard u can use comp cams 918 beehive springs but they are extremely pricey so has anyone ever used these gm beehive springs? http://www.summitracing.com/parts/NAL-12499224/ They are substantially cheaper and i would rather buy them then the comp cam ones

 

Those are for a LS series engine, so I'd question if they would fit SBC Gen 1 heads.

 

ya but ive heard ppl saying u can use them on lt1 heads and lt1 heads and vortec heads are almost the same besides reverse cooling

 

I used the 918 springs on my vortec heads so i can't answer about the summit brand ones. I would imagine them being pretty good. Just remember you need keepers and retainers with those springs also.

 

their not summit brand their made by gm performance for 02-04 z06 but ya i googled it and found the answer u can use them if u use sealed power positive valve seats and comp cams retainers