Hey all of you with turbos, where did you get your headers from and what did they cost?
I'm in the process of refreshing my sbc 421 which is currently centrifugally supercharged and I want to explore the posibility of twin turbo charging this to make 1200-1400 hp in a 73 Camaro.
So any assistance or suggestions are most welcomed, thanks in advance.

 

Made them from TIG-welded 16 gauge 321 stainless u-bends, collectors, and flanges from Burn's Stainless and Specialty Products Design. Materials were about $1500.

 

Made them from TIG-welded 16 gauge 304 stainless u-bends, custom 304ss flanges and 304ss collectors. All the bends were from Burns Stainless and I have access to a CNC plasma table at work so we cut the flanges there and flattened them.

Materials are a hair under $1000 total.

 

Tig weld them myself either using 321 or 304 stainless. Depends on what the car is going to be used for. I used 321 stainless on my personal cars headers as well as a freinds ls1. materials get into the 1000-1500 range generally I buy in bulk generally so get my costs down that way.

What heads are you running with the 421? What is your power output now and using what blower (just a nosey lil guy i am )

Steven

 

I HAVE A 96 FIREBIRD AND I WANNA PUT A STAGE 2 GRAND NATIONAL MOTOR IN IT . DO ANYONE KNOW OF SOMEBODY THAT CAN MAKE THE MOTOR MOUNTS FOR ME IF YOU HAVE ANY IDEA PLEASE LET ME KNOW. YOU CAN EMAIL ME AT BUMPINRECORDS@AOL THANKS GUYS

 

Actually there is a guy who makes them think he is in florida he does alot of gn stuff. I forget the link cause i lost all my links. I have talked to him about this very thing though.

Steven

 

My current combo is centrifugally supercharged with a custom air to air intercooler from Jim Sheren, so if some of the specs don't look exactly right for a turbo setup that can be corrected.
73 Camaro round tube back half mini tubs ladderbars & coilovers full cage. Motor made 550 fwhp, blown 7psi 800 fwhp no intercooler or tuning.
Block - CNC Bowtie
Crank - Cola 4340 forged 3.875 stroke
Rods - Summit Proline 4340 forged I beams 5.85"
Pistons - Ross -15cc 2618 forged 4.155 bore 9.6 cr
AFR 220 heads soon to be sent to Lloyd for full porting
Super Victor intake soon to be sent to Lloyd for porting
Proform 950 holley carb
Comp Cams 260/265 @ .050 628/632 114 lsa solid roller
P1200B Procharger
G-Force Street Lethal 5spd Trans
9" 35 spline locker 3.5 gears
Would like to put 2 t-72 q trims with Kooks Turbo headers and make 1500 - 1600 rwhp.

 

Are you planning on changing some of the internals out? 800hp jump is a pretty serious one. Did pick a great place to get headers made priced the kooks headers out before myself did it myself and had fun personally though

Good luck on the build
Steven