351m intake manifold
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351m intake manifold
I have a 77 that has a 351m with an upgraded intake manifold. I'm buying a 75 from a buddy of mine that has a 390 in it. I'm going to put the 390 in my 77. I was wondering if the intake from my 351m will work with the 390?
Laughing Gas
Joined: May 2015
Posts: 931
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From: Port Orchard, WA
Negative. 390’s are part of the FE engine family. FE intakes are a little odd and unlike other engines. If you look at the valve cover, it actually sits partially on the intake. I believe the pushrods also go through the intake.
So long answer short, no.
So long answer short, no.
Super Moderator
Joined: Apr 2004
Posts: 34,491
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Welcome to FTE!
Be aware that all FE engines become 390s on sale day. Before you buy, check the stroke. 3.5" is a 360, 3.78" is a 390. As OEM, a 4x4 never had a 390.
Also note that while a '75 390 will outpower a '77 (or any other year) 351M, the pickup 390 is not some firebreather and is "soft" compared to the performance engines in cars.
So make sure all that work you're going to do gets you what you want.........and good luck!
Be aware that all FE engines become 390s on sale day. Before you buy, check the stroke. 3.5" is a 360, 3.78" is a 390. As OEM, a 4x4 never had a 390.
Also note that while a '75 390 will outpower a '77 (or any other year) 351M, the pickup 390 is not some firebreather and is "soft" compared to the performance engines in cars.
So make sure all that work you're going to do gets you what you want.........and good luck!
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New User
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I was thinking it wouldn't work. Just wishful thinking I guess haha.
Thread Starter
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New User
Joined: Feb 2022
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Welcome to FTE!
Be aware that all FE engines become 390s on sale day. Before you buy, check the stroke. 3.5" is a 360, 3.78" is a 390. As OEM, a 4x4 never had a 390.
Also note that while a '75 390 will outpower a '77 (or any other year) 351M, the pickup 390 is not some firebreather and is "soft" compared to the performance engines in cars.
So make sure all that work you're going to do gets you what you want.........and good luck!
Be aware that all FE engines become 390s on sale day. Before you buy, check the stroke. 3.5" is a 360, 3.78" is a 390. As OEM, a 4x4 never had a 390.
Also note that while a '75 390 will outpower a '77 (or any other year) 351M, the pickup 390 is not some firebreather and is "soft" compared to the performance engines in cars.
So make sure all that work you're going to do gets you what you want.........and good luck!
basically I was just wanting a little more power. I feel like the 351m in my 77 is lacking a good bit.
Lead Driver
Joined: Oct 2018
Posts: 7,871
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The intake is the least of your problems. the 390 isn't going to bolt to your transmission / bellhousing or much of anything else. if you can steal some parts off the donor vehicle it will make it easier.
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OK. I might put my old intake back on the 351m before I put it in the 75.
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Well crap. I figured I could take the bell housing from the 75 and use it with the motor.
Super Moderator
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The bell will bolt up to the transmission, so if you have a manual transmission bell and clutch on the 390 it should bolt up to the transmission. Engine mounting and exhaust etc will have to be sorted out.
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Yep I didn't even think about the exhaust. Thank you sir
More Turbo
Joined: Aug 2017
Posts: 604
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From: NJ
I have an Edelbrock Performer for a 351M that I replaced when rebuilding. It has some pitting on a couple of the runner ports where it meets the head. If anyone wants it let me know. Maybe we can work something out.
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