Originally Posted by irocnroll89
Hello all, I am going to install a built up set of 113's on to my 40k mile L-98. I also will be putting in a LPE 211/219 cam.
1. Which head head gasket/bolts do I need? A "stock Fel-pro" for a 91 Vette?
2. Which push rods should i use?
For head bolts the stock y-body are slightly longer and have a hardened washer under the head. The extra length is to make up for the thickness of the washer. The bolts are pricey from GM, I believe ARP sells SBC bolts of the proper length with the washers. Look for bolts for aluminum heads (which is why the washers are required).
For head gaskets avoid the 1010's. The stock GM head gaskets are .052" compressed. May want to spend some time with one of the many on-line compression ratio calculators. And adjust the head gasket thickness for the desire compression ratio.
Note that the '113 heads have soft guide plates. So need to run a self aligning rocker or put in hardened plates & push rods. The stepped plates will interfere with the bracing in the valve cover. Which can be removed, but it is easier to go with flat guide plates.
If you go with roller rockers such as pro-comp's you will need longer rocker studs. Step up to the 7/16" stud along with the rocker to fit. No extra cost, but does provide extra valve train stability.
Note that the four center bolt holes in the TPI base need to be elongated. The '113 heads use the older style intake manifold bolt angle (all the same angle).