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Post Info TOPIC: And So It Begins- The Big Block Swap


A Poncho Legend!

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And So It Begins- The Big Block Swap


This thread could potentially last several months. I finally spent some time in the garage tonight. I managed to get the exhaust manifolds removed and only cursed about 4 times. They came off in pieces:

dec08024.jpg

Something I did notice is the smog tube for #1 cylinder is white wheras the others are pretty much carboned up:

dec08025.jpg
Anything I should be worried about? I noticed that that exhaust port has a bit more surface rust than the others:

dec08026.jpg

I pulled the plug for that cylinder and it looked fine (just a little rich)

Comments?

 Todd




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Canadian Poncho Superstar!

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sounds like those little emblems on the fenders are causing a lot of trouble !


 This is exactly what I thought would really work for this car-congrats !

heres to finding a poorly calibrated gas station pump !

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not supposed to use a hammer to remove those manifolds todd. wink
looks like a bit of moisture got into that ex port.
hows the spark plugs look as far as white/rich?

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It just needs some running..   Someone mentioned, it will have little valves, but it will be great for cruising....I still suggest ,you bolt it in, run it for summer, and than make plans for upgrades next winter..You know, (big cam) (aluminum heads) (roller rockers)(1050 carb) 4.88 gears MT bias ply nylon L60's   lol lol  

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A Poncho Legend!

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If you save those manifold pieces, I could weld them up and we could list them on e-boy..

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A Poncho Legend!

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The manifolds were already cracked. I only used the 5lb sledge to make a 1/2" socket fit a rounded 9/16 bolt! The spark plug looked rich. I think I'll take Brad's advice and put a 71 LS5 cam in while it's out of the car and an Edelbrock intake. It was a PITA doing the cam on the 350 with the engine in the car. We'll see. I need to get back on Ebay and start sellin' stuff to make some play money!



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A Poncho Legend!

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e7d4_12.jpgI found you a intake  biggrinhttp://cgi.ebay.ca/Chevrolet-396-427-454-Edelbrock-TR2X-Tunnel-Ram-Intake_W0QQitemZ250352405301QQihZ015QQcategoryZ80741QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

-- Edited by 427carl at 22:21, 2009-01-04

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69Laurentian wrote:

The manifolds were already cracked. I only used the 5lb sledge to make a 1/2" socket fit a rounded 9/16 bolt! The spark plug looked rich. I think I'll take Brad's advice and put a 71 LS5 cam in while it's out of the car and an Edelbrock intake. It was a PITA doing the cam on the 350 with the engine in the car. We'll see. I need to get back on Ebay and start sellin' stuff to make some play money!



Todd,

 I had a 454 in a 73 Corvette convertible (3700lb car) 400 turbo, I put a cam dynamics 280H in it thats 280 duration 526 lift, it had a spread bore holley and headers-13:90 @ 102mph with 3:23 gears-no need for a stall converter, a friend had a 69 Chevelle used a 272H with a big Holley went about the same



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Todd, what swap are you performing?  Changing a '69 from small block to big block? 

Please let me know, as I did such a change 3 years ago in my 70, 350 / turbo 350 to 454 / turbo 400.  Made a whole new engine harness for the big block, had to get the proper turbo 400 crossmember and frame brackets, etc.

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Poncho Master!

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Way to go Todd. Keep working at it.

Rick

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I love it!
So you'll be needing a 12 bolt?

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A Poncho Legend!

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Are you staying with manifolds or going to headers Todd?

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427carl wrote:

....I still suggest ,you bolt it in, run it for summer, and than make plans for upgrades next winter..


I agree with Carl on this, this can eat up a lot of money if you turn this into a democratic process Todd!



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Decisions decisions.. We'll see how the funds go and that will pretty much decide whether I cam it or not.
seventy2plus2:Yes, I'm swapping the 350 in my 69. How many changes did you have to make to the harness? So far I only see minor changes (eg: oil pressure sending until wire)

I'm going to run the THM350 for the time being.

CDNPONT: I have a 12 bolt posi lined up, again it's a matter of getting some $$ together. Likely will pick it up in the Spring

Carl- I'd like to run headers.

Lots of little things to consider as well. I'll need mounts, oil pan (427carl has one) , a bigger rad, front exhaust pipes, springs, and I still need to replace the front ball joints. I also would like to improve the handling of the car at some point too.



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Guru

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Congrats big guy and remember if you get stuck your just a phone call away from the experince staff at TINY'S.LOL Ill stop buy on night and give you a hand if you want!

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A Poncho Legend!

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Ok. I was asking because I think I might have one manifold around for it if you needed it.

Oh, and you shouldn't need any mounts. Just take the engine mounts off your 350 and bolt them on the big block.

-- Edited by Carl Stevenson at 08:40, 2009-01-05

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Those are the recall mounts so I'm going to buy new ones.


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Guru

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Ive got some mounts for you.

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A Poncho Legend!

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Really? I thought by 69 they had the locking tabs on the mounts. Hmmm, yes, then for sure you need to change them if so.

Good luck finding good ones. All the aftermarket mounts I could find for my Acadian were junk. I found NOS on ebay cheap, very luck.

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As you correctly noted, cam swaps while the engine is in the car are a major PAIN.  If you have any thoughts about swapping the cam, do it NOW!  Also, what is the mileage on this motor?  A new timing chain might be a good idea in any event.  If you don't do anything else, you may want to TERRACLEAN it, probably good insurance if you don't know how long it has been sitting.

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Actually, 427Carl sourced the engine for me. It was running up until a few months ago.


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A Poncho Legend!

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Tiny- You'll be putting the 12bolt in at your shop. Too much of a pain doing it in my garage!

When are you going to get an alignment rack? When? When?


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A Poncho Legend!

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Astro Jet wrote:

As you correctly noted, cam swaps while the engine is in the car are a major PAIN.  If you have any thoughts about swapping the cam, do it NOW!  this motor?  A new timing chain might be a good idea in any event.  If you don't do anything else, you may want to TERRACLEAN it, probably good insurance if you don't know how long it has been sitting.



        TERRACLEAN rofl.gif      I thought that was for COROLLAS? $169.95



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Poncho Master!

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427carl wrote:

        TERRACLEAN rofl.gif      I thought that was for COROLLAS? $169.95



Is that what it costs out in Clinton? ohmygod.gif You can get it done for almost half that amount here in the big smoke.w00t.gif



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A Poncho Legend!

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One of the kids here at work with a turbo'd Civic has challenged me to a heads up race next summer at Sparta. Now it's personal!furious

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