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Joined: Jul 2007
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Thanks for the clarification Vikki.
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Joined: Jan 2004
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I did the same swap in my '69 Firebird and used a fresh three core rad. No cooling issues (probably because of the cooler Alberta weather!) with any of my engine combos up to about 390 hp.
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Joined: Jul 2005
Posts: 3,889
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Senior Member
Joined: Jul 2005
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Terry may have a '69 lower air baffle. It is a one year only and differs greatly from the '67-8.
Vikki, I think I asked this before. Does the auto dip stick tube attach to the back of the head or block? That will need to be checked.
Tom '69 Firebird 400 4spd conv
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Joined: Sep 2001
Posts: 14,265
Valued Mentor
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Valued Mentor
Joined: Sep 2001
Posts: 14,265 |
Dip stick bolts to the head.
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Joined: Feb 2005
Posts: 1,219
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When I had a 350 swapped for a 400 the one tricky part I remember is that the Ram Air repro manifolds had more mounting holes than the heads had holes for. Two (or Four?) holes per head had to be drilled and tapped. Your situation may differ...
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Joined: Sep 2001
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Valued Mentor
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Valued Mentor
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There are just a few heads that do not have the holes for the manifolds. Most heads have the end holes.
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Joined: Mar 2004
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Valued Mentor
Joined: Mar 2004
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And if the head holes are "missing" for the exhaust manifolds (should not be on '71 400 heads) it only makes a difference if you are using headers. Stock manifolds are just fine as is. I haven't tried it with long branch manifolds however.
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Joined: Jul 2007
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Got the 350 pulled today and since the complete engine appears to be original, I'm keeping some of these parts with the original block and some I just need for the 400 we're building. - timing cover (11 bolt) - 6.75" harmonic balancer - timing indicator (2 bolts, mounts on pass side) - fuel pump eccentric - lifter galley pan - complete dipstick (innner & outer tube) Thanks!
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Joined: Mar 2004
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Spiderman, I should have everything except the 11 bolt cover and the tubes.I will have a look. David 
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Joined: Jul 2007
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OK David. Let me know what you have. (any snow yet?)
I've moved this request to "Parts Wanted"
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