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Thread: 340 engine build

  1. #11
    Aspen and Volare Senior Member klb6469's Avatar
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    I've got a pair of used 450 tunnel ram carb's so when the time comes will give those a shot, will jump down to 390's. But it amazes me at the price of carbs lately.

  2. #12
    Aspen and Volare Super Moderator aspen79's Avatar
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    I've noticed also the higher prices on carbs recently.

    If worse comes to worse and you don't have enough vacuum for the power booster, you could install an electric vacuum pump. Just an idea.
    1979 Aspen Sunrise 500". Bought in 1987 with 72,000 miles and a mighty E24 California emission 90hp leaning tower of power/4-speed
    1996 Dakota with a torque monster (not) 3.9L V-6 and automatic owned since 1998. Now demoted to winter duty
    2008 Ford Mustang V6, the new summer daily driver

  3. #13
    Aspen and Volare Senior Member klb6469's Avatar
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    Yea, that idea came to mind. The place I'm going to business with on the engine build, said as long as I don't go to crazy with cam duration I should be fine. I go to pick up the manifold tomorrow. There was some damage done to it prier to shipping. Guy claims he didn't do it, said it must have been one of the carbs that did the damage. Here's a picClick image for larger version. 

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ID:	6602 What do you think?

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    Super Moderator 77rr2x4s's Avatar
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    Looks like it was powdercoated or heavy paint? Doesn`t look too bad. I have seen worse damage to aluminum with just pitting. If thick enough there I would get that area resurfaced smooth if possible or at least to remove the coating /paint on the surface where the gasket goes and check for flatness.

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    Aspen and Volare Super Member doublechaz's Avatar
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    The carb damaged the water neck huh? Weird.

  6. #16
    Aspen and Volare Super Moderator aspen79's Avatar
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    We've had good luck at work using epoxy (forget which type off hand) to repair aluminum intakes that have corroded around the coolant passages and started leaking. Either a new intake was made of unobtainium (like older Chevy TBI intakes for example) or the price couldn't be justified on a vehicle that only has a couple years to live anyways. We clean it up good, making sure all the corrosion is removed, put the epoxy on and then sand it flat once it cures.
    1979 Aspen Sunrise 500". Bought in 1987 with 72,000 miles and a mighty E24 California emission 90hp leaning tower of power/4-speed
    1996 Dakota with a torque monster (not) 3.9L V-6 and automatic owned since 1998. Now demoted to winter duty
    2008 Ford Mustang V6, the new summer daily driver

  7. #17
    Aspen and Volare Junior Member tubtar's Avatar
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    Mill , drill and tap , or build up with weld and re-machine if you are wanting to do it right.
    Probably not that expensive either way.
    But that intake is not going to have great low r.p.m. manners regardless.
    It will look awesome , but you will need to make some compromises with driveability...........even with smaller carbs.
    A loose converter and a heavy foot might be your friend.

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