performance mods for 391?
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Joined: Jun 1999
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From: SW Missouri
performance mods for 391?
I am upgrading the points to electronic, gapping the plugs to .045, and possibly splitting the exhaust system to duals with 4' long truck mufflers (its in a bus, and currently has 30+ ft of straight pipe)
the stock holley has a governor on it, but it seems to work just fine. ( I might try my AFB on it just to see what happens)
this fall I was considering a mild cam,(if an FE cam will work), and timing chain set, any other ideas?
holley pro-jector 650 cfm throttle body setup, might be feasable also...
the stock holley has a governor on it, but it seems to work just fine. ( I might try my AFB on it just to see what happens)
this fall I was considering a mild cam,(if an FE cam will work), and timing chain set, any other ideas?
holley pro-jector 650 cfm throttle body setup, might be feasable also...
Thread Starter
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Posting Guru
Joined: Jun 1999
Posts: 1,172
Likes: 2
From: SW Missouri
performance mods for 391?
I might install a mild cam if it will fit, anybody have the stock specs?
will an FE timing chain set fit? will 390 Pistons work (pin size the same?)
I dont want to change heads, as it would be easier to just use a 390, but 8.5 to one pistons, and a mild cam seems like it would wake it up a little. destined to be a motorhome, need to get up hills once in a while.
391/clark 5-sp/6.14 axle (soon to be 5.83)9.00x20 tires (someday to be 10.0x22.5)
will an FE timing chain set fit? will 390 Pistons work (pin size the same?)
I dont want to change heads, as it would be easier to just use a 390, but 8.5 to one pistons, and a mild cam seems like it would wake it up a little. destined to be a motorhome, need to get up hills once in a while.
391/clark 5-sp/6.14 axle (soon to be 5.83)9.00x20 tires (someday to be 10.0x22.5)
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Joined: Jul 2001
Posts: 298
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From: Oztralia
performance mods for 391?
>I might install a mild cam if it will fit, anybody have the
>stock specs?
>
>will an FE timing chain set fit?
only top gear and chain
will 390 Pistons work (pin
>size the same?)
yes
>
>I dont want to change heads, as it would be easier to just
>use a 390,
it is the port size that will have the most effect
but 8.5 to one pistons, and a mild cam seems like
>it would wake it up a little. destined to be a motorhome,
>need to get up hills once in a while.
>
>391/clark 5-sp/6.14 axle (soon to be 5.83)9.00x20 tires
>(someday to be 10.0x22.5)
>stock specs?
>
>will an FE timing chain set fit?
only top gear and chain
will 390 Pistons work (pin
>size the same?)
yes
>
>I dont want to change heads, as it would be easier to just
>use a 390,
it is the port size that will have the most effect
but 8.5 to one pistons, and a mild cam seems like
>it would wake it up a little. destined to be a motorhome,
>need to get up hills once in a while.
>
>391/clark 5-sp/6.14 axle (soon to be 5.83)9.00x20 tires
>(someday to be 10.0x22.5)
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