not sure how much the rods along will hold but weve boosted a 99 ls up to 257 WHP and it held. It eventually blew up but the kid never brought it back dwn so im not sure what let go. he wanted as much power as possible bc he was plannign on building it. my guess would be the pistons fried bc he was setting up to get nitrous put on it when he got it back from us. I would suggest putting ARP rod bolts in for extra security. Good luck though.