I picked up a set of 799 heads for my lq4. I have ran 7.4 pushrods on my lq4/317 combo with a gt2-3 cam for years without any issues.

I am pulling the 317's, installing studs, 799's, and ls9 gaskets.

Will the 7.4 pushrods be fine?

 

Most likely they would be unless you milled... I believe we came up with a general consensious of just over 7.38 from factory pushrods.

 

Get a PR checker and make 100% sure, but as stated if you arent milling you should be fine with 7.4s. Are you putting in LS7 lifters?

 

You should be fine if there unmilled but to make sure get a pr checker like said above

 

Thanks for the replies fellas - going to buy a pushrod length checker. Rather be safe than sorry.