Should I only upgrade my exhaust valves?
#1
Should I only upgrade my exhaust valves?
My new 402 twin turbo setup is almost done. I'm going to be running 317 heads and I was wondering if I should upgrade only the exhaust valves? What size exhaust valves is ideal for a big hp twin turbo 402? Should I just run the stock intake valves or upgrade those too? Sorry for all the questions guys but I'm trying to get this project done soon and don't want to half *** anything.
#5
10 Second Club
iTrader: (64)
I am turbo and not procharged and when I did installed my 243 heads over the winter I had a 1.60 exhaust valve put in and the seats cut back into the head. Then I hand ported the exhaust runners. I left the stock sodium filled intake valves in mine. I have heard that the exhaust side of the head is the most important FI engine.
#6
I am turbo and not procharged and when I did installed my 243 heads over the winter I had a 1.60 exhaust valve put in and the seats cut back into the head. Then I hand ported the exhaust runners. I left the stock sodium filled intake valves in mine. I have heard that the exhaust side of the head is the most important FI engine.