3/8 flange means a great seal that won't warp. 2 1/2 collectors creates perfect scavenging of your exhaust. Increases engine power - 15+ horsepower & 20+ torque. Stock motor mounts can be used, hugger header style headers that will help you to avoid many clearance problems. These headers will fit very tight to the block for extra clearance.
Fits 1955 and up 265-283-305-307-327-350-383-400 Chevrolet V8 engines. These headers will not fit any factory application with side engine mounts including 63-82 Corvettes. These headers are designed for straight plug cylinder heads. You may encounter interference problems with angle plug heads.
These don't have a specific application so clearances will vary depending on use. From the bottom edge of the head the headers come out 4 1/4 to the outside of the middle primaries. Professional installation recommended(No Instruction Included). Leave us your Tel no after paid if you did not left in the registeration form.
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We will respond to you within 24 hours. Our working hours are from GMT 03:00 to 12:00. Once you have received your item, please leave feedback for us as this will inform us that you have received your items. How to Find Turbo Code.If you are not sure fitment for your old turbo, please let us know this information. The PN, OEM code information from your original turbo nameplate. The Engine code & KW, HP, Year for your car. The Photos of your complete turbo.