Flowtech 11510FLT Exhaust Header
Flowtech 11510FLT Exhaust Header
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Flowtech

Flowtech 11510FLT Exhaust Header

3 stars out of 1 review
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Key item features

  • Optimized Performance: Precision engineered for enhanced fit, performance, and fuel economy from the engine, ensuring maximum operational efficiency.
  • Durable Construction: Constructed from .049 roll flash mild steel tubing, featuring 5/16 inch flanges with sealing rings for a robust and leak-free seal.
  • Mandrel-Formed Design: Incorporates a mandrel-formed power plenum and formed collectors, contributing to improved exhaust flow and overall performance.
  • Leakproof Seals: Equipped with leakproof O-ringed port seals and undergoes a leak test to guarantee maximum performance without exhaust leaks.
  • Complete Hardware: Includes all necessary mounting hardware and gaskets for a straightforward and simple installation process.
  • Vehicle Specifics: Designed for 1963-1974 Chevy/GMC 1/2, 3/4, 1-Ton pick-ups, and 4WD models with 292, 230-250 6-cylinder engines.
  • Dimensional Specifications: Features a 1.5 inch tube size and a 2.5 inch collector size, optimized for the specified vehicle applications.
  • Protective Coating: Coated with a high heat resistant black paint, providing a stealthy appearance and added durability.
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Columbus, 43215
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Showing 1-1 of 1 review

Apr 2, 2018
LaneS
3 out of 5 stars review

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These headers are decent quality. However, DO NOT plan to use the factory intake manifold. They do not clear well. The manifold alignment dowels should be removed - a little heat on the head next to them and they thread out with vice grips - and replaced with bolts. The problem I’m currently having is that the bottom edges of the 2/3 and 4/5 collectors do not seal properly against the head. I used a Remflex gasket and it helped, but still had a ticking noise. Replaced the dowels with bolts and put a regular Felpro gasket in, and it’s even worse of a leak. Also, the 1/2/3 header in within fractions of an inch of contacting the engine mount, and if you’ve got a manual trans, you may have to modify the clutch linkage a bit.

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