obrien24

iTrader: (2)

What kind of flow numbers would be good for a set of 5.3 heads. I have a set of ported 5.3s with the stock valves. However I am planning to put some bigger valves, and I wanted to know if I should have some more port work done to them. The heads are TEA 5.3 stage 1s that have been reworked by a local porter for a bit better flow. The work on the heads were done by the previous owner but he was running a bit smaller cam that I plan to run.

jrp

iTrader: (16)

what do they flow now and whats the port volume?

by stock valves do you mean 5.7 stock or 5.3 stock? 5.3's have 1.89/1.55 stock vs the 2.00/1.55 on the 5.7's.

JaSSon

iTrader: (11)

Get bigger valve and good springs and be done with it. TEAs are cnc'd and they were worked over by the local guy so they are done.

obrien24

iTrader: (2)

I was told the heads flow 285/250 with stock 5.7 valves. I was already planning to go bigger with the valves, and since the heads only have 918s on them, I am going to replace those with some better springs since I want to go with a pretty big cam. As far as the port volume, I don't know, but hopefully I can find out from the previous owner.

BrentB@TEA

Our latest 2.02 valve program is flowing arounf 315+, If you go to a larger valve you will need the valve job blended to the port for best results.
It should pick you up a bunch provided the local porter didn't kill them.

obrien24

iTrader: (2)

does the exhuast flow number sound right to you? It seems kind of high considering the intake isn't that high. The previous owner used alot of nitrous with the heads and they were apparently working pretty good.

BrentB@TEA

it seems about on par if they were flowed with a pipe.. The intake numbers seem a little low.

obrien24

iTrader: (2)

Before the heads go on, I am going to have the valves changed, and I will have the flowed again so I can see where they are. I am hoping to put a MS3 cam with these heads, and a 100 shot. You don't by chance know if the ms3 is going to fit?