I currently got my car in the shop getting everything installed. Motor is getting put together as we speak.
wanted to ask everyone with experience and get some opinions.
motor is a LME 403ci 4.005/4.000
All Callies Forged Internals
11:1 compression
68.5 CC LME Ported Brodix BR1 Cathedral Heads (2.08/1.60 valves) should flow 365+ cfm @ .700 with BTR platinum .660 springs, BTR shaft rockers 1.7
Tony Mamo ported FAST 102 w NW 103 TB
TSP 1 7/8" LT through TSP true duals
MM catch can
Cam is a 236/256 116+4 .640 .630
through a Frank built 4l60e w a Circle D 3600 Stall.
As for the exact flow data on the heads I never got that from LME. I do know the flow data Brodix posts on their website is for 2.10 intake valves, which ill post for reference.
BR 1 13(Ported) 2.100 Intake .200 -150.300 - 226.400 - 287.500 - 337 .600 - 359.650 - 365.700 - 3701.600 Exhaust.200 - 97.300 - 147 .400 - 198.500 - 224 .600 - 232.650 - 233.700 - 236
I know LME has quality porting so I dont imagine im losing much flow have a 2.08 intake valve.

Originally plan was to go procharger, But things change.
Now the plan is to just run NA for the forseable future.

my question is about the Camshaft. I know it will run great using nitrous. Max ill be running is a 200 shot through a plate kit.
My ideal GOAL is I would like to be close to 540 rwhp and 500 TQ or above, just on motor
is this cam enough?
Ive seen some 402/408 builds on here around the hp numbers, but the camshaft are in the 240s duration atleast and a touch more compression.
But I know the Brodix heads flow a amazing for cathedral ports.

just looking for some feedback before the motor gets put in the car. Easier to swap the cam while it out on the engine stand.

All feedback is welcome.

 

540 rwhp Is enough

 

Going off my 402 with a complete Mamo 235 top end, you need more cam/ change the cam.

Mine is 11.8:1 243/249 114+3 and it made peak at 6650. Made 660's all day long on the engine dyno.

 

I have been looking at your build for a while now. Was quite impressed. Yours is the actual reason im even asking about my cam 😂 i would dream to have numbers like yours in my 98 trans am. Would be killer.

 

Nothing you can't achieve with some cubic dollars lol. Tony is great at Spec'ing cams. I would give him a jingle.

More cam and a different intake and I bet I could gain another 10-20hp with some more RPM.

 

yeah trust me ive spent a pretty penny on what I got Lol. Unfortunately I dont feel like cutting the cowl a longer runner intake. I do have a BTR trinity in the closet. But I feel I will loose torque everywhere across the power band. I'm saving it for down the line when I go boosted.
mine is sitting at 11:4:1 compression as it sits. I could get thinner gaskets to up it closer to 11:75:1.
Car is still in the shop getting everything put in. With all the suspension and new exhaust. He has had the car sense February last year. So hopefully soon I can see how she performs.

 

I think you get the horsepower but I'm skeptical on your torque goal. Keep us posted

 

Swap the cam and either shelf your current cam for future boost or sell it. I'm going with a Summit Big Gun 1 240/247 just to get my combo running w/ same heads. Im planning a better custom cam for round 2, but getting it basically on the road is the priority. If i can't make 620hp, at least, from my 392, the cam is going in the trash can.