[brharris777]

Ok so as soon as a see a snowflake i am gonna start ripping the 140000 mile 4 valve out of my cobra. It needs the valve seals replaced and i know the heads can stay on the car for it but i need a winter project too. I want to disassemble, inspect, re ring, do the appropriate head work, possibly find a set of affordable used N/A cams that are in good shape, and maybe a set of flat top pistons. I want to go blown eventually but its not gonna be in the cards for a while and im not sure exactly what i want to do so for now id like to pick up a few horses and refresh this motor. Anyone have any suggestions about other stuff i should do while im in there?

[98Cobra_sleeper]

i would just send the heads away to have them fully rebuilt and ported. i paid 2300 for full rebuild and a raceport. prolly the best money i spent. high end pull was great. only regret i didnt do was cams. possinbly port the lower intake?

[majorownage]

get an mmr oversize valves, bronze valve guides, and Beryllium Copper valve seats.

If you have an oven, you can do alot of the hard work yourself. Heat to 400-500 and use a properly sized punch to remove the guides. The reverse is about the same, except it helps to use some N_2 to cool the guides down. They slip into place.

Seats and valves will have to be installed by a shop. Make sure they use sunnen machines.

Then blend the seats into the runner yourself.

An easy 20-30rwhp

[brharris777]

ill be doing the headwork at school, we are only allowed to do "repair" work and cant do any porting, i can do the guides, seals, seats, springs, and retainers. Then i figured i would do a mild porting on the heads and port match the exhaust port to my longtubes. Porting the lower intake sounds like it would probably be a worthwhile mod. How about throuttle body and upper intake porting?

[majorownage]

Originally Posted by brharris777 ill be doing the headwork at school, we are only allowed to do "repair" work and cant do any porting, i can do the guides, seals, seats, springs, and retainers. Then i figured i would do a mild porting on the heads and port match the exhaust port to my longtubes. Porting the lower intake sounds like it would probably be a worthwhile mod. How about throuttle body and upper intake porting?

Tb porting isn't really worth it unless you have a kennebell or whipple.

head work (not porting) is easy hp
porting is a wee bit harder especially if you have never done it before; very easy to go overboard

[brharris777]

ok so skip the throttle body porting. Im going to have a local machine shop do the porting on the heads and the lower intake, so i have someone to blame if things go bad.

[vita]

btw, I got your text. Mod on... if you need help you know where to find me!