Stahl Sidemount headers.
Instructor
Joined: Nov 2003
Posts: 203
Likes: 0
From: harrisonburg (JMU) va
Re: Stahl Sidemount headers. (73 Vet)
could these fit under 69 side covers? the original aluminum ones not fiberglass. I ask because im looking for a better flowing sidepipe set up but trying to keep the stock covers. anybody know of anything i could do?
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 39
From: Fremont CA
Re: Stahl Sidemount headers. (71vetteLT-1)
My comments maily reflect engine dyno testing I have observed with vintage racing engines. The Stahls were always outpeforming the Hookers in test I observed. Are they worth twice the money for 20HP, you have to make the decision. I have not obseved Big Block Chevy comparisions just 331 cu/in road race engines that are limited by the rules to modifications allowed. The Hookers may perform better on large displacement small blocks in the 400 cu/in range but, NOT the 383 and below range based on other testing we have seen with Camaro header tube sizes using Hooker chassis headers from 1.625" to 1.75" to 1.875" tube diameters. The Hookers are too big in diameter and too long in the primary pipe section for optimum power but, are better than nothing, I own a set of Hookers myself but really want Stahl side exit headers for my Vintage 63 FI Vette. My 72 LT-1 has Hooker chassis headers that are too short for proper power but, do show a 30HP gain over factory manifolds (the headers are too low too costing me about 1" of ground clearance!)
