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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Dec 2011 Posts: 134 'Bolter | | 'Bolter Joined: Dec 2011 Posts: 134 | Has anyone had any experience with Ram Head headers in an AD with sbc. Suggestions to minimize steering linkage clearance. | | | | | Joined: Feb 2004 Posts: 29,746 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,746 | "Headers", or exhaust manifolds? Rams' horn manifolds are sufficient for any speed a street engine is likely to run. Tubular steel headers don't really do anything beyond increasing under hood temperature and noise, and melting spark plug wires. There are a couple of ways to handle steering box interference-- - - -Either space the box away from the frame rail a couple of inches, or use a driver's side exhaust manifold for a 55/56 passenger car 265 engine that has the outlet toward the front of the manifold. Some late 1970's 305's used a set of manifolds with the outlet back by the firewall that will also provide sufficient steering box clearance.
Unless you're planning to run the engine above 5K RPM consistently and use a radical camshaft and modified cylinder heads, there won't a measurable gain in HP and torque with rams' horns over manifolds with the outlet away from center. I ran the rear-outlet 305 manifolds on round track 350 engines that dyno'ed at 300+ HP and 6K+ RPM.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Dec 2011 Posts: 134 'Bolter | | 'Bolter Joined: Dec 2011 Posts: 134 | Late 70s seem the way to go thanks for info | | | | | Joined: Dec 2018 Posts: 2,450 'Bolter | | 'Bolter Joined: Dec 2018 Posts: 2,450 | flattop49 You can use a 66 full size chevy left manifold,shim your steering box out 5/8 inch. | | |
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