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New EFI Intake Manifold ??

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jcisworthy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Apr/23/2018 at 10:08am
Any updates
Specializing in engine building and cylinder head porting

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SONOFAMX View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SONOFAMX Quote  Post ReplyReply Direct Link To This Post Posted: May/08/2018 at 3:52pm
Hey Dennis we haven't heard from you in awhile.
Did you mean GMC?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote THE MENACE Quote  Post ReplyReply Direct Link To This Post Posted: May/08/2018 at 4:53pm
Not much progress really to talk about. The engine that will be used for dyno testing the new intake has been back and forth to the machine shop several times for various reasons. I am also waiting for an oil pump mid-plate.   
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dbltrbl Quote  Post ReplyReply Direct Link To This Post Posted: May/09/2018 at 2:45pm
Originally posted by Red Devil Red Devil wrote:

Couple other thoughts:
- better PCV baffling than RPM AirGap
- try for similar low-end and mid-range but better top-end than AirGap.
- fit under a flat hood without carb spacer and with drop-base air cleaner ... but spacer helps for those with cowl hoods or similar needing more plenum volume.    

The AMC RPM AirGap has good bottom end and mid-range, but drops off quickly on the top end compared to equivalent intakes for other makes.   Would sacrifice some bottom end to gain on top.  

Thanks, RD


AMC RPM AirGap http://www.edelbrock.com/automotive/mc/manifolds/amc/rpm-air-gap.shtml is without center divider cutout just like an SBC Performer Airgap http://www.edelbrock.com/automotive/mc/manifolds/chevy/performer-air-gap-sb.shtml. If more top end is needed one needs to use bigger carb because only 1/2 of the carb feeds 4 cyls instead of whole carb or cut the divider like in SBC RPM AirGap http://www.edelbrock.com/automotive/mc/manifolds/chevy/rpm-air-gap-sb.shtml or use open spacer.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Red Devil Quote  Post ReplyReply Direct Link To This Post Posted: May/09/2018 at 5:29pm
Originally posted by dbltrbl dbltrbl wrote:

If more top end is needed one needs to use bigger carb because only 1/2 of the carb feeds 4 cyls instead of whole carb or cut the divider like in SBC RPM AirGap or use open spacer.

On top of my RPM AirGap I have a custom 1/2" blended open spacer, a Wilson 1" tapered open-plenum spacer, a Pro-Systems 950HP carburetor and a 14" x 4" filter with a circle-track drop-base air cleaner (profiled to improve airflow) and just fits within a slightly raised but otherwise stock cowl-induction hood. Intake has some plenum work and runner/port exit blending to Indy SR heads, 250@0.050" solid roller cam, 1 7/8" headers, dual 3" full exhaust, T56 transmission.   

Cruises in overdrive just fine at 1800 rpm and has lots of low-to-mid-range torque. Combo wants more intake, but used the AirGap since I already had it. The new intake Edelbrock is developing sounds like it would get the most out of the rest of the combo, so waiting instead of trying a Torker.

Thanks,RD
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 343sharpstick Quote  Post ReplyReply Direct Link To This Post Posted: May/10/2018 at 11:26am
Thanks for the update. I'm hoping for an intake and switch EFI Upgrade this winter! Fingers crossed for a SEMA release.
Good luck.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote THE MENACE Quote  Post ReplyReply Direct Link To This Post Posted: May/21/2018 at 5:09pm
Not much to report, but the test engine block is finally back from the machine shop. Rotating assembly may be back by the end of the week.





Dennis

Home of:
Craig Breedlove' "AERO AMX" #1
SS/AMX #9(THE BIG MENACE)
1970 AMX 416,EFI,5 speed(Mine)   
1970 Javelin 401, 727 (My Wife's)
1969 AMX,390,Auto,Go Pac (My Mom's)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: May/21/2018 at 8:43pm
Thanks Dennis
71 Javelin AMX P-code Go pac 360/4spd/3.91's
was Green/green now T/A red w/blk leather

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