can i use a g5x3 in a all stock motor??
 

granted i upgrade the valve springs will this work or will i have to worrie about the valves smacking the pistons? i belive its a 114LSA

How much are your heads milled??? That will cause issues

On NON milled heads and a 114 LSA, it will fit, but contact LG Motorsports for a definate.

good lord YES IT WILL WORK ON STOCK HEADS!!

ONLY in 114lsa though

the heads are stock, but ported 98 5.7L. the old motor in my sig spun a rod at the big GM event last year in stanton! i was in 4th out of 130+ cars and it let go! the guy i lost to one it all and i know i could have beat him! the motor i am putting in it is all stock but it has all the ARP goodies in it! i tried selling it on ebay for 2200 but now i am just gonna use it instead!

why only a 114lsa? is it more lift on a 112?

I have never one anything.......

Country is correct. I had heads for my car and i had to get rid of the cam cause i wasnt going to get the pistons flycutted. Stock heads or fine.

iconz28 had it on his stock heads and it fiy great! with new lifters