I don't see much wrong here.
A 505 with a Long Rams and electronic carbs. 600/700 are pretty good numbers.
- Thread starter toolmanmike
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I don't see much wrong here.
vance.dykes
Well-Known Member
Fuel injection with the long Rams I think that's pretty ingenious be a lot better than the carburetors because of the puddling problems they had back then
autoxcuda
Well-Known Member
Picture of it in the dyno show carbs.
Was it dyno’d with carbs or FI?
Don’t know how to judge it not looking at some cam specs.
Was it dyno’d with carbs or FI?
Don’t know how to judge it not looking at some cam specs.
All cars now have ram manifolding.
Those are not carbs. They are TBI, made to look like carbs. You can see the TPS on the side of the left carb throttle shaft.
gkent
Well-Known Member
Holley Terminator throttle bodies look like carbs ... probably why they call the system "Stealth" !!!
Exactly. I called them electronic carbs. Not really injection. TBI is close.
j-c-c-62
Well-Known Member
I've got my own similar build going. I would also love to know what the cam specs were and how it was optimized if so for this motor combo. Being there were two OEM long ram versions offered, also be nice know which one is shown here. My guess is the higher RPM long Ram version. I personally feel TBI EFI does not solve the core issue with long rams mentioned in this press release, it mainly helps one tune around that core issue. I will be modifying my long rams for port injection, with the goal of the injectors being placed underneath for a more stealth look and what I believe is a better fuel path based on fuel chosen and to reduce fuel puddling partly by insertion into highest port velocity path. Because of space and packaging not sure I can achieve that location goal. I would also love to incorporate a staged single mini-injector in the plenum per long ram so I can wet the long ram and maximize air charge cooling when at full throttle. I will be using E85 and 12.5 CR. I do wonder how critical head port match up with long rams really is here with a big inch motor with a power curve/usage under 5K rpm.
The numbers reported here are very encouraging and welcomed. Nice courageous old/new school build.
The numbers reported here are very encouraging and welcomed. Nice courageous old/new school build.
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Actually, I agree, TBI has the injectors positioned on top of the butterflies spraying fuel down onto them, these new tbi actually have the injectors under the butterflies injecting fuel into the airstream. So for lack of a better term, TBI or electronic carbs. Whichever, still injection at the base.
If you click the link their standard 505 makes 650 TQ and 630 HP. So the long ram is up 50 lb/ft and down 40 hp. They do say their standard 505 uses CNC heads. Still pretty impressive torque numbers, plus the cool factor.
j-c-c-62
Well-Known Member
The comparison of RPM's here IMO tells the whole story, the long rams are basically a choke point and done at 5k.
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You can clearly see…..their” long rams”……I've got my own similar build going. I would also love to know what the cam specs were and how it was optimized if so for this motor combo. Being there were two OEM long ram versions offered, also be nice know which one is shown here. My guess is the higher RPM long Ram version. I personally feel TBI EFI does not solve the core issue with long rams mentioned in this press release, it mainly helps one tune around that core issue. I will be modifying my long rams for port injection, with the goal of the injectors being placed underneath for a more stealth look and what I believe is a better fuel path based on fuel chosen and to reduce fuel puddling partly by insertion into highest port velocity path. Because of space and packaging not sure I can achieve that location goal. I would also love to incorporate a staged single mini-injector in the plenum per long ram so I can wet the long ram and maximize air charge cooling when at full throttle. I will be using E85 and 12.5 CR. I do wonder how critical head port match up with long rams really is here with a big inch motor with a power curve/usage under 5K rpm.
The numbers reported here are very encouraging and welcomed. Nice courageous old/new school build.
Heavenly Horsepower Courtesy of Momma
Mopar !!
Think about it fellow Gearhead’s ….
These Were a product of the “ Chrysler
Firepower “ engineering teams …..in the 1960’s !!
Give Compliments to those talented individuals who broke the conventional molds then and now for thinking outside of the box &
Reaffirming the concept of “ Torque “ ….
This could catch on ya know with the hot rod
Community, now that we’ve got access to Fuel
Injection Technologies to enhance what’s been given. ….A couple of TBI’s ( throttle body injectors ) seem to function nicely wouldn’t you agree …..FI atomization evidently cures the “ fuel puddling” problems of old eh!
Remember… Momma Mopar engineered these beautiful intakes to fit under a stock hood !
On Chrysler 300’s after the Hemis in the early 60’s , Mopar gave the industry a “ Wedgie” of
Sorts … didn’t they !!
Imagine you’re “ stealth bomber B or C body
Makin a new age weenie millennial mobile look like a farm tractor at the next neighborhood red light romp with 700 glorious foot pounds
Of Mopar Muscles…. Then you can give all
You’re friends “ Wedgies” at will …..
They won’t know what hit em ….
Mopar2ya!!
John
Sounds like fun EH !!!!
j-c-c-62
Well-Known Member
My doubt here was which version of long rams were they, they look in practice almost identical.
I am not convinced TBI EFI solves fuel puddling issues on long rams, does it reduce it, I am sure, but to what degree is unproven, and author indicates even with this EFI solution tuning was cumbersome, A very long mostly horizontal directional changing individual cyl long ram at low relatively engine speeds has a lot of area potential for puddling issues.
This is my long ram 413 creation in HS in 1969
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I was referring to "their" long ram engine versus "their" single four barrel engine. The cam specs listed are 242/248 duration 565/565 lift hydraulic roller.
j-c-c-62
Well-Known Member
Seems like a lot of duration for a motor that effectively tops out at 5K? I assume that is an off the shelf cam spec, not optimized for this unique application. HYD roller will also be my choice, as valve adjustment would not be fun.
The single four barrel engine peaks at 5600 with the same cam.
gtxrt
Well-Known Member
they look like the 1963 intakes with the 15" runners not the 1960-1961 with the 30" runners.
vance.dykes
Well-Known Member
The Heading says electronic carbs which I would presume are throttle bodies either sniper or the Edelbrock Easy Street
vance.dykes
Well-Known Member
EFI has a setting called D cell fuel cut off which means it turns the fuel off coming out of the injectors when you let go of the throttle hence no fuel no puddling that's why I said it if you understand fuel injection you see the great advantages to that on this style of an intake system
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