Given that it's HotRod.com I can only see the first article in the series and it doesn't go in much depth, but what a cool build! I'm curious if anyone else has come across any cross-ram intakes converted to EFI.
Has anyone seen any of the huge D500, 30" runner cross-ram intakes converted to EFI?
The torque and fuel economy, for the cubes should just be fantastic at highway cruise with something like this.
There's just something crazy about them that I love.
My Edelbrock BBC cross ram had previously been converted to Lucas timed MFI, with fabricated throttle bodies and then street-driven in a 1975 Corvette, but it's an expensive, complex and un street-friendly (<10 MPG) system so after pondering a number of alternatives per attached, I sold off the Lucas system and am reverting to carbs, albeit converting it to a single plenum via a large connecting channel, replacing the barely-visible 1" diagonal tube added by the original builder.
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X Ram 001.jpg
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I've been thinking/planning/hoping one day... to put EFI on my Chrysler longram intake system.
If there's one intake system that really benefits from fuel injected close to the heads than it's this system.
I've seen a few more pics of similar EFI'd longram systems come by on the 'net.
MadBill wrote: ↑Thu Aug 30, 2018 1:58 pm
My Edelbrock BBC cross ram had previously been converted to Lucas timed MFI, with fabricated throttle bodies and then street-driven in a 1975 Corvette, but it's an expensive, complex and un street-friendly (<10 MPG) system so after pondering a number of alternatives per attached, I sold off the Lucas system and am reverting to carbs, albeit converting it to a single plenum via a large connecting channel, replacing the barely-visible 1" diagonal tube added by the original builder.
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X Ram 001.jpg
HA! I love that it's got an old TPI throttle body on it; what a frankenstein intake.
bigblockmopar wrote: ↑Thu Aug 30, 2018 2:46 pm
I've been thinking/planning/hoping one day... to put EFI on my Chrysler longram intake system.
If there's one intake system that really benefits from fuel injected close to the heads than it's this system.
I've seen a few more pics of similar EFI'd longram systems come by on the 'net.
If you find them again, please post links here, I'd be interested to see them.
Adam
P.S. Where are you in the Netherlands? My old job had my working in the Netherlands for 90 days over a 3 year period. I've seen most of the country but spent the most time in Amsterdam / Rotterdam. I'm pretty sure I'd be 400lbs if I lived in the Netherlands; too much high-calorie food and beer to tempt me. Damn those Stroop waffles!
Actually might be less expensive, difficult, etc. to just use the cross ram manifold and mount the newer Holley Sniper or FITech fuel injection units on them and bingo! you have a COOL looking cross ram with an easy to put together EFI system and great tuneable system. Use the KISS theory!
Ive had an SY-1 for years; and when I first got it there were a bunch of guys scarfing them up to use on their Cross-Fire vettes and camaros. Apparently they made a top plate out of aluminum and mounted 2 throttlebodies on it.
Cool stuff in this thread; waffles, beer and frankenstein efi.
MadBill : I would not use 2 holleys on that cross ram. I would use 2 AFB carbs mounted sideways, end to end ( back to back). Better distribution and throttle balance.
2 of the newer Edelbrock 650 AVS2 carbs would probabily work very well.
Much better than 2x holleys on that.
You could alos experiment with a divider plate/turtle insert in the plenum under each carb to direct fuel towards the runners of each plenum.
A Heated (partial plenum divider/turtle -director thingie would be boss.
A bit of heat under the carbs really helps fuel vapourization
Last edited by F-BIRD'88 on Fri Aug 31, 2018 11:18 am, edited 1 time in total.
Newold1 wrote: ↑Fri Aug 31, 2018 7:42 am
Actually might be less expensive, difficult, etc. to just use the cross ram manifold and mount the newer Holley Sniper or FITech fuel injection units on them and bingo! you have a COOL looking cross ram with an easy to put together EFI system and great tuneable system. Use the KISS theory!
OTOH, there's a reason the long ram didn't survive; running wet air/fuel 30" down-up-down cold tubes is anything but simple. Any theoretical benefits of throttle body EFI might easily be lost.
I was there back in the day and few of those cross rams survived daily driver service. Most were removed and replaced with a single 4-bbl.
Jack Vines
Studebaker-Packard V8 Limited
Obsolete Engineering
F-BIRD'88 wrote: ↑Fri Aug 31, 2018 11:13 am
MadBill : I would not use 2 holleys on that cross ram. I would use 2 AFB carbs mounted sideways, end to end ( back to back). Better distribution and throttle balance.
2 of the newer Edelbrock 650 AVS2 carbs would probabily work very well.
Much better than 2x holleys on that.
You could alos experiment with a divider plate/turtle insert in the plenum under each carb to direct fuel towards the runners of each plenum.
A Heated (partial plenum divider/turtle -director thingie would be boss.
A bit of heat under the carbs really helps fuel vapourization
I've been pondering orientation; as you point out, cross-wise would position the primaries symmetrically wrt the runners. I have a matched set of annular discharge Holleys roughly calibrated for this app so I will be trying them, but I've also worked with a lot of Quadrajets over the years and have a like-new pair of them that I'd also like to evaluate. The dyno I'll be using is being upgraded to eight O2 sensors so hopefully I can work on fuel distribution with both.
NewbVetteGuy wrote: ↑Thu Aug 30, 2018 5:16 pmIf you find them again, please post links here, I'd be interested to see them.
Adam
P.S. Where are you in the Netherlands? My old job had my working in the Netherlands for 90 days over a 3 year period. I've seen most of the country but spent the most time in Amsterdam / Rotterdam. I'm pretty sure I'd be 400lbs if I lived in the Netherlands; too much high-calorie food and beer to tempt me. Damn those Stroop waffles!
Use the KISS theory!
