Optimal 408 Set Up?
Thread Starter
Teching In
Joined: Oct 2006
Posts: 36
Likes: 0
From: New Bern, NC.
Optimal 408 Set Up? My 408 is back under the wrench 
. The engine was originally built loose by the previous owner. The guy that works on it now discovered the piston cylinder wall clearance was a little out of spec. Thinking about going .040 over and new pistons. Had a cam back out and a lifter turn, which caused us to have to replace the cam, lifters, timing chain, and crank. Thought it would be a good time to go .040 over and get new pistons. If I'm going to do all of this I want to do it right and get the most out of it. Looking for opinions on best possible set up. Below is a list of parts that goes w/ set up. The car dynoed 502 RWHP and 485 LBS torque. I'd like to be around 540-550 RWHP and 500 + in the lower end torque. My last set up made its power fast at lower RPM'S w/ a custom ground cam by Bauer Racing. I like drive ability. Those pojections may be a little ambitious, but lets see how it goes. Also will be spraying a nice shoot of nitrous down the road.
-6 litter iron block
-Dart 225 slightly ported on the exhaust
-90 Fast intake
-90 LS6 throttle body, or Nick Williams
-Kooks long tubes
-no cats
-Zo6 cat backs
-Varram Intake
-did have 12.3:1 compression 100 octane
I feel like I've left something out. This will get it started anyway.
Rob Edwards
. The engine was originally built loose by the previous owner. The guy that works on it now discovered the piston cylinder wall clearance was a little out of spec. Thinking about going .040 over and new pistons. Had a cam back out and a lifter turn, which caused us to have to replace the cam, lifters, timing chain, and crank. Thought it would be a good time to go .040 over and get new pistons. If I'm going to do all of this I want to do it right and get the most out of it. Looking for opinions on best possible set up. Below is a list of parts that goes w/ set up. The car dynoed 502 RWHP and 485 LBS torque. I'd like to be around 540-550 RWHP and 500 + in the lower end torque. My last set up made its power fast at lower RPM'S w/ a custom ground cam by Bauer Racing. I like drive ability. Those pojections may be a little ambitious, but lets see how it goes. Also will be spraying a nice shoot of nitrous down the road.-6 litter iron block
-Dart 225 slightly ported on the exhaust
-90 Fast intake
-90 LS6 throttle body, or Nick Williams
-Kooks long tubes
-no cats
-Zo6 cat backs
-Varram Intake
-did have 12.3:1 compression 100 octane
I feel like I've left something out. This will get it started anyway.
Rob Edwards
If it were my setup.... I'd sell the FAST stuff, as well as the dart heads.......... I'd call up TEA and have then send me a set of L92's with Brian Tooley's famous "nitrous exhaust port", order a L76 intake from SDPC.... then I'd Fax over the flow sheet from the heads along with a brief description of what i was looking for out of the car to synergy motorsports to have me a cam custom ground for me 
Good luck on your rebuild and keep us posted
Good luck on your rebuild and keep us posted
Thread Starter
Teching In
Joined: Oct 2006
Posts: 36
Likes: 0
From: New Bern, NC.
Originally Posted by dame
If it were my setup.... I'd sell the FAST stuff, as well as the dart heads.......... I'd call up TEA and have then send me a set of L92's with Brian Tooley's famous "nitrous exhaust port", order a L76 intake from SDPC.... then I'd Fax over the flow sheet from the heads along with a brief description of what i was looking for out of the car to synergy motorsports to have me a cam custom ground for me
Good luck on your rebuild and keep us posted
Good luck on your rebuild and keep us posted
There's already a famous "nitrous exhaust port" option for the L92's? I haven't even seen any stellar numbers on the L92 or the LS7 head/intake combo that haven't already been hit with the FAST 90/90 + premium cathedral port heads. If you didn't already have the FAST it would be a different story. Then you are talking budget.
