batmanforever

Facts are :
Exhaust Valve guides wear more before inlet guides do, then sodium exhaust valves dont seat correctly, then valve head breaks off, then engine goes bang, then
Preventive maintenance seems to be the key.
Looking at installing best available parts that will give most reliability.
Have Katech Torquer 110 cam ready to be installed.
-Was going to replace Sodium exhaust valves with Ferrea Super alloy valves as sodium exhaust valves will always have a question mark on their reliability
-Reuse Titanium inlet valves?
-Replacing both inlet and exhaust valves guides with Ferrea bronze
-PAC beehive valve springs
-Steel retainers (best for longevity vs titanium), spring bases and valve locks
-GM lifters
-Yella Terra roller rockers
-Push rods?

But hey, still alot of work and expensive so why not bite the bullet and bolt on some test proven aftermarket CNC ported heads?
Whats available and at what prices?

My application is to a street driven Vette in New Zealand (Go the "All Blacks" in the World Cup Rugby) with the following mods : 110 Katech Torquer cam, Killer Bee 2, Kooks headers and Corsa mufflers. Hopefully, if I go new heads I will still retain close to the same fuel economy of 30mpg on a cruising trip running on pump gas

jimman

So there are more than 30,000 of these on the street????

felo357

650HP HEAD & CAM PACKAGE BY RPM MOTORS
• CNC Heads Complete
• Competition Valve Job
• Stainless Steel Exhaust Valves
• Bronze Valve Guide Liners • Milled & CC'd
• Patriot Gold Valve Springs
• Titanium Retainers
• ZZ-007 Cam Shaft
• Flow Tested
• Fully Assembled
Cloyes Hex Adjust Timing Chain & Gear Set
Push Rods - One Piece - .120 Wall
ARP Head Studs
Cometic Head Gaskets - .040 Thick
Crower Roller Lifters
Crower Adjustable Rocker Arms
Port LS7 Intake Manifold & TB
LG MOTORSPORTS LONGTUBE HEADERS
Corsa exhaust
Hallteck intake Killer Bee II

You would not see 30 mpg never sorry. I get 13.1 MPG
and that's babying the car

RFZ

put a blower on it and be done...

BigMike NY

That's definitely a primo setup! Are you making 600HP at the wheels, or damn close to it?

batmanforever

I can understand that using a slightly higher lift cam the fuel economy will decrease slightly and that fuel economy is in relation to hp used. But having a better flowing aftermarket head will that be the reason for the decrease in fuel economy?

felo357

589hp 526tq

felo357

I really don't know but it loves gas.

BigMike NY

SICK!!!!!!!!!!!!!!!!!!!!!!!