450 hp N/A. Suggestions?
throw on a procharger or vortech on that stock motor and set it on low boost and 450/450 will be very easy and mild and very dependable at that hp level. if fi is an option anyways.
375 rwtq @ 3000 rpm and 399 @ 3800 rpm, yet the custom BRE 224 cam pulls to almost 7000 rpm with out falling on its face. It's all in the proper valve events / combo.
Bolt ons vs heads / cam ls6 vs fast + underdrive

147 mph = 6800 rpm
375 rwtq @ 3000 rpm and 399 @ 3800 rpm, yet the custom BRE 224 cam pulls to almost 7000 rpm with out falling on its face. It's all in the proper valve events / combo.
Bolt ons vs heads / cam ls6 vs fast + underdrive

147 mph = 6800 rpm

AZPS03(Ed Curtis)
New lifters
New PR
New oil pump
FAST 90/90
1 7/8 long tubes
X pipe
42# injectors
AFR 215CC or 243 stage 1 set up from TEA/AI or any reputable shop
Walboro 255 pump
Nothing mild about that and you should be there all day. your looking about 4k in parts and if you don't do it yourself about 1500 for labor and about 350-500 depending on who tunes your car.
This set up should pull hard from about 2.5k rpm all the way to 7K
i've learned you cant realy look to deep into the dyno numbers unless your comparing gains over stock on the same dyno.
All the dynos around the world are calibrated slightly diffrent, so you need to look at the numbers with a grain of salt.
On one dyno you might make 425whp, and on another dyno the car could make 450.
You really have to decide what you want to spend, how important driveability is and go from there.
The Best V8 Stories One Small Block at Time
AZPS03(Ed Curtis)
call VaSpeed or give Ed a call himself, those guys know what they are talking about and can help you get your horsepower. If the combo aint right, it will never reach your goals or do what you want. Plus youll want someone who knows how to tune these real good to get every last pony out.
i've learned you cant realy look to deep into the dyno numbers unless your comparing gains over stock on the same dyno.
All the dynos around the world are calibrated slightly diffrent, so you need to look at the numbers with a grain of salt.
On one dyno you might make 425whp, and on another dyno the car could make 450.
You really have to decide what you want to spend, how important driveability is and go from there.
Very true, hence why I baselined my car on the same dyno. It wasn't a strong bolt on car like some people have. Gains of 112 rwhp and 80 rwtq over my bolt on baseline with a simple optimized 243 head / 224 cam setup is nothing to sneeze at. What I feel is most impressive is gaining 50 ftlbs @ 3000 rpm and 71 ft lbs @ 3800 rpm. You're average slap it together combo won't run like this. It's easy to make high hp with rpm, not as easy to make big torque gains. Since hp is a function of torque and rpm.
Contoured and radiused everything real nice on my fast 78 that I opened to 85mm (15 hours porting). I made sure the bottom piece of the fast was also perfectly port matched to the heads, which it was way off on a few ports... Wonder how many people just slap their fast on and don't check port alignment? I sold my LS6 intake for $300 and bought the fast 78 for $300 so it didn't cost me anything but time.My dad had all the sorts of hand grinding valve job equipment. I spent a good 20 + hours here cutting and resharpening every stone by hand trying to get the perfect width and angles on my valve seats. I'll honestly never do that again but it was well worth it. I recut every surface on the valves to ensure concentricity and a good seal (the oem valve job sucks huge). I also hand lapped every valve in for a perfect seal and hand blended the top cut into the cylinder heads (important transition for airflow). With the help from BRE I was able to use propiertary valve angles that really paid off.








Contoured and radiused everything real nice on my fast 78 that I opened to 85mm (15 hours porting). I made sure the bottom piece of the fast was also perfectly port matched to the heads, which it was way off on a few ports... Wonder how many people just slap their fast on and don't check port alignment? I sold my LS6 intake for $300 and bought the fast 78 for $300 so it didn't cost me anything but time.My dad had all the sorts of hand grinding valve job equipment. I spent a good 20 + hours here cutting and resharpening every stone by hand trying to get the perfect width and angles on my valve seats. I'll honestly never do that again but it was well worth it. I recut every surface on the valves to ensure concentricity and a good seal (the oem valve job sucks huge). I also hand lapped every valve in for a perfect seal and hand blended the top cut into the cylinder heads (important transition for airflow). With the help from BRE I was able to use propiertary valve angles that really paid off.









Why didnt you port the 243?? Your putting out some good numbers but man if you would have done a full race port you probly be real close to about 460rwhp i would think.. I might get some 243 but trying to get my hands on some prc ls6 heads

