360 "rattling" under load

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Nov 11, 2002 | 09:30 PM

4X4X460X76

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Joined: Oct 2002

Posts: 27

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From: Whetstone USA

360 "rattling" under load

I have a 360 that rattles under load. What I mean by that is that when it is in 2nd or 3rd and low RPMs, when accelerating, it sounds like the top end is rattling. Think it is either 1) lifter sticking or 2) loose rocker arms. Any help would be appreciated. I am planning on pulling the heads and replacing the springs and seals and inspecting the system, so if someone would be able to help me id this noise, again, much appreciated. (if it is just adjusting the rockers, I might not yank the heads).

Thanks

Jim

76 F250 HiBoy
360 with mild mods (was told when I bought the truck it was a 460!)

C6 that will 'bout throw your head into the bed!

Nov 11, 2002 | 09:54 PM

76supercab

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Joined: Jan 2001

Posts: 465

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360 "rattling" under load

Are you sure it's not spark knock (detonation)? If it happens under load at low rpm that would be my guess. 2 solutions I can think of:
1. Retard the timing until it doesn't knock.
OR
2. Downshift.

Nov 11, 2002 | 10:19 PM

4X4X460X76

Thread Starter

Freshman User

Joined: Oct 2002

Posts: 27

Likes: 0

From: Whetstone USA

360 "rattling" under load

Will definately check that out. Changed plugs, cap, rotor, wires, but haven't checked the timing yet. Will try it, thanks.

Jim

76 F250 HiBoy
460 with mild mods
C6 that will 'bout throw your head into the bed!