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4bbl on a 4.0 |
Post Reply | Page <1 456 |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19676 |
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What are the "slots" cut in the bottom of the manifold on each side for?
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Frank Swygert
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wittsend
AMC Nut Joined: Apr/15/2020 Location: California Status: Offline Points: 422 |
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I have to say you sure throw yourself into these modifications. Nothing seems to hold you back from taking the plunge. I'll be interested to know the outcome. These "What if I..." type projects always fascinate me. Often times they are things I would like to have done but lack the machines (Mill/TIG etc.) to accomplish. Hoping the best results for you.
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'63 American Hardtop
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jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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I inserted the 1.5 wide flat stock through the slots to raise the floor to the bottom of the runners
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Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
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jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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Finished
Not the prettiest but I have WAY too much time in it now and did not want to spend more time making it pretty |
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Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
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jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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Its working!
Need a 4 hole 1" spacer to stack on the intake. The throttle bracket hits the intake Have an open on a 4 hole just to test if it was revving ok and it is Up about 17 so far over the 2bbl adapter on the big plenum and aoubt 8 over the 4 on the big plenum but it sounded like hitting a rev limiter through a lot of the pull Red line is best 2bbl and black is best so far with new setup Pretty sure I figured out how to make a big plenum work but maybe some other year lol |
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Specializing in dyno services, engine building, and cylinder head porting
rbjracing.com Phone Number 518-915-3203 |
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wittsend
AMC Nut Joined: Apr/15/2020 Location: California Status: Offline Points: 422 |
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On a V-8 configuration (with a tall manifold) the mixture makes somewhat less than a 180 degree radiused turn to get into the cylinder. With this manifold the secondary's make closer to a 360 degree turn most of which are abrupt right angles and yet you get positive results.
Airflow is so hard to figure out. I'm always confounded how my neighbors leaves wind up in my yard and how they cluster in the most difficult to get to areas. Glad to see you are getting what you have been searching for.
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'63 American Hardtop
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5spdwagon
AMC Addicted Joined: Jun/29/2012 Location: Guy ton ga Status: Offline Points: 522 |
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Make this work out and build me one for my 4.0 to go in my 69 American. I am the odd ball that likes different stuff.
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Real hot rods have 3 pedals
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