DemonicZ

thinking about buying a new block and building it to swap into my 98. my horsepower goal is 500+ crank through an A4. I am building my 98 into a 2014/1969 tribute Z28. I already have it painted matte pearl white looks amazing. I did a little research and the 69 Z28 came with a 302 rated at 350hp and the '14 Z28 comes with LS7 rated at 505hp. Thats what a 5.0 and 7.0 liter engines. I figured I'd want to build a 6.X liter motor. I'm considering a 5.3 or 5.7 stroked out 383 which is roughly a 6.3, This car is daily driven and still needs to be friendly. Since both cars are N/A. so will this so FI is out.

They way I plan this out is to build the motor over winter and swap in the spring as I still need a car to drive till then.

Any ideas on which direction to head would be great
what block what stroke. open to all opinions.

2000ultraZ1911

I'd save money and just go with a 6.0 lq4 instead on a stroker...that's just me

03Sssnake

iTrader: (20)

^^^ yep, pickup a JY LQ4 and have a machine shop freshen up the bottom end..maybe LS3 top end and a healthy cam.

DemonicZ

How does this look?
MOTOR:
GM LQ9 block

TSP 370 Rotating assembly
Factory Crankshaft
TSP 6.125" H-Beam with ARP8740 bolt
Mahle Motorsport 4.03" -4cc falt top, LS1 relief valve
Clevite main and rod bearing set
balanced

PRC Stage 3 LQ9 heads/cam package
PRC .675" EHT dual valvesprings
TSP Torquer V3
111 LSA
7.400"
not sure what timing chain to use????
Ported LS6 oil pump
FAST 92 intake
FAST 92 throttle body
98mm FTP LID

EXHAUST:
TSP 1 3/4 longtubes catless
TSP true duals

03Sssnake

iTrader: (20)

I run the GM Heavy Duty/LS2 chain...some like the double rollers, either would be fine. I ran the heavy duty single, so I would not have to clearance my Melling high volume oil pump to clear a double roller chain. You will not have that problem with ported LS6 oil pump.

Would run 1 7/8 TSP longtubes over the 1 3/4...Everything else sounds great!

DemonicZ

Okay great, Thanks

DemonicZ

what size injectors would you recommend? 42lb? 46lb?