If you want to modify the tunnel ram or the cross ram it's easier to balance out the ports and and modify the 5 and 7 ports to help out from Robing each other. Also you can put dams in the bottom of the crossram to help with fuel distribution. They did it with the Smokey rams.
This channel and this video is AWFUL. It's the same trash they show on TV. It's all fake. It's all dumb. Go watch Uncle Tony's Garage or Cold War Motors of any of a hundred other better shows made by real mechanics on real budgets without any of the fake drama.
Just like I told Richard Holdener several weeks ago during a live show, the cross ram is the best tunnel ram that fits under your stock hood. Chevy designed it because the SCCA Trans Am series rules said the carbs had to fit under the stock hood.
I really appreciate the cross ram..... my oldest brother had a Weiand cross ram on his 70 SS Camaro in the mid 70s it was just so cool looking and he didn't have to hack the SS hood
Yeah, those PENSKE CAMAROS with a DZ 302 defeated the BOSS 302 mustangs in the 68 and 69 Trans AM series ..! 😎 I wish i had one of those cross rams the DZ 302 Camaros had under those hoods ..! CHEVROLET MOTOR COMPANY would not help Rodger Penske at all so he went to the AMC Javelins in 1970 😮
@@dinadaughtry8993 sorta. As the video says, engineers came up with the tunnel ram on their spare time and dime, cutting off the tubes until they hit the right formula. then they hung the runners over the valve covers of the 413, which sucked if you had solid lifters and needed to reset 'em every 3K. so they did the intake you're thinking of.
@@albertgaspar627 The more familiar Crossram came about on the '62 413 Max Wedge MoPar engines. The earlier over the valvecover intake system was called "Sonoramic" and I think was available on full size Chryslers until about '64 or '65.
Everything traces its roots back to Chrysler, EFI, hemi-chambers, tuned runners, the downdraft carb, A/C (that actually works), disk brakes (1949), automatic overdrive, key start, cruise control, sliced bread, the civil rights movement, and those little finger cuff things, those are cool.
@@Texasmule The 3X2 bbls all had accelerator pumps ( came off a GM 409) so the total CFM was 1300. Actually I went back to the one thermoquad Carter to run in Super Stock class. The cross ram made the 340 very torquey and great for 1/8th use but it fell into a modified class and not near the power of the blown cars in the class.
Very informative! Too bad Dyno sessions are so expensive. And so few people have the experience and knowledge to run them! Keep making videos along these lines please!
Great info. I'm about to put bigger heads and a weiand tunnel ram on my Chevy II , so this stuff is great to watch. It's surprising how well the cross ram performed when all the magazines I've ever read have said how soggy these manifolds are and one should stay away from them.
The very first tunnel ram I saw was home made from an early Rochester mechanical fuel injection manifold from a Corvette. It did pretty well. But today, it's considered heresy! LOL
Crossram all the way! The sound is so cool. Plus if used like how the AMX scramblers first pioneered, with a forced induction hood. They can match a tunnel ram
Modifying a Weiand tunnel ram for a BBM right now! The top was WAY off from matching the bottom and had to do a lot of port work. It's on my RU-vid channel.
I wish somebody would do a test on the Weiand SuperStock 440 sixpack tunnel ram P3690982 . I have always wondered if they make good power on a stroker performance engine or even stock 440.
Eh, I wouldn't expect a different result. If anything might be different.....it would almost certainly favor the tunnel ram even more so. The 302 is peanut sized and gives up power to larger displacement SBC. It's the engine Chevy never would have built if not for the strict 305cu in limitation in the race rules of Trans Am. The only advantage found in super short stroke 302 is it's ability to run to higher RPMs more safely than the longer stoke bigger displacement engines. With that said and looking at how the Cross Ram and Tunnel ram run really close together under 5000RPM and how the Tunnel Ram begins to show an advantage above that level......it's hard to imagine how the Tunnel Ram advantage doesn't just get even BIGGER as RPM increases in the Smaller Mouse Motor.
I have to say so far on my MotorTrend delve, Engine Masters has been my favorite episodes. You have the nerdy op for techies, power bangers for speed freaks, the close circle of coworkers/buddies meshing together on an objective topic, and the histroical nature to preserve information and numerical data. While I do enjoy Frieburger and Finnegan a bunch with the garbage builds, this show does give a scientific gravitas to further help the layman try to work on his rig on his own property.
To me, this is the biggest benefit of proper port fuel injection. Not the Bolt on injection systems that are basically electronic carburetor, but real fuel injection. You can get a manifold with long runners (or variable length in some OEM applications) with substantially less issues with distribution. When it comes to tuning, fuel injection (especially the current batch of aftermarket solutions) are light years easier than trying to make individual jet and air bleed changes on multiple carburetors. On top of that, you get improved driveability, improved fuel economy and vastly improved cold starting.
The “electric carb” you speak of is a product they endorse for one... And for two, you can tune them... add some timing control via the ignition kit and you’ll blow any carb out the water. Cmon man the things read the O2 sensor and adjust fuelling for ideal ratios almost out of the box.
@@dylanzrim3635 and still offer all the fuel distribution issues of a single carb! and I speak from experience that tuning a Holley carb for start up and cold running is so much easier than the earlier edelbrock efi and even Holley sniper efi,yeah they self tune “sort of” but not like a good set of ears and nose can! Using a target rpm and a target mixture for a desired idle not having any means of ve tuning is a compromise a carby can do! not sure about some of the other carb looking systems some impressive features indeed! all have their merits especially for simplifying a conversion, though they all still have nothing on port injection and a Haltech or similar for management.
I recently picked up an Edelbrock P22 dual-qual intake for 55-64 Pontiac 389's. The price was right and 1406's carbs are a dime a dozen used. That nostalgic look. The challenge of setting it up right. the P22 is a dual plane design.
As to driving styles. Being biased towards lateral g forces, vs wham bam thank you mame. The top end power would come in at the top end with forced air induction. Cowl induction allowing greater visibility, and induction. A win, win.
So instead of it simply being a larger engine makes it's power at a lower RPM with the cross ram, it's more of more intake pulses per second making it work, which needs a smaller engine to have that higher number.
I made the decision to purchase an Offenhausr Crossram for my '56 Chevy project a few years ago. I have just about got all the engine parts and I still have work to do on the block and maching. The engine is a 400 block with a 327 stroke, flat tappet cam (a copy of an original Off-Road Z cam both first and second stage) to begin with. I also have both the single 4 and the dual 4 top for this manifold. It is going to be fun to play around and see what combination I can come up with that is the most impressive for my budget. If the times are slower than expected, I will be upping the camshaft to something a bit more aggressive, maybe a mechanical roller. This is finally a video about the crossram that makes a sensible comparison of what can be expected. Thanks for posting this.
I sold a polished Offy cross ram intake to a guy a few years ago, and he said it was going in a 56 Chevy. Northern Kentucky area. Havent seen the finished product but he had big plans for an unusual build.
Long ram = huge torque. Nick's Garage did a comparo on a 63 Chrysler 300J with a 413. The single quad had a higher horsepower rating, but the long ram intake delivered the torque in spades.
I could watch these vids all day. When it comes down to it, I would rather own and operate a dyno vs. having a race car. Then again, I'm old and sore 24/7.
I want t revisit your "Six Pack shootout" show. You should get a set of Holley carbs with mechanical secondaries. They were made. I had mine set up on bell-crank lnkage for 3/4 throttle before i brought in the out side carbs. No bog...just power
I'm working on an old 360 D100 and thinking "Man that looks cool".... Looked up the cross ram and they are right. The cost is reflex-burst-out-laugh ridiculous.
To make my engine tune closer from the beginning, ( Edelbrock crossram), care to divulge the jet sizes on all eight jets. I’m in Albuquerque so I’m just looking for someplace to start.
Can't wait to try my RSR (real street ram) on my L79 65 Acadian Canso CDN (chevy11) Ran a few Eddies w/660's in the 70's worked decent but this should be very streetable so I drive it more
Simultaneous-opening square carburetors with each runner physically divided from the other runners all the way to carb bottom would afford more control, but discard the benefits of the plenum.
Really like the cross ram. Bet the power drops a bunch compared to the tunnel ram when put in the vehicle. Under hood temps will rob it. But ya won't have to cut the hood and it just looks cooler than a tunnel ram, imo.
now that you have changed jets in the carbys it would be a more even comparison if you used those newly jetted carbs to redo the other manifolds first pulls? also for the baseline, of course.
I always wanted to try the Weiand tunnel ram on my 440 mopar but wasn't sure about carb selection. Two 750 double pumpers or two edelbrock 750s ? Or two 600s ?
Now y'all should do some runs with a Single Top on the Cross Ram, say like NASCAR HEMI STYLE,and see what that looks like. Lots of Power and Very Efficient.👍👍
then Chevy "played it again Sam" in the 1980's with their ceasefire CrossFire setup on Vettes and Z28's. I keep findin' 'em for $100 a pop, nearly makes me want to pass up $75 edelbrock single quad intakes with peeling paint.
Ok now test the SY1 or Edelbrock SY1 Smokey Ram, built by Edelbrock and Smokey Yunick, use the correct 830 Holley also. Maybe test them on a 302 with some real rpm, leave the stump puller ,383, low rpm engines outta this. I want to see them at 7500 rpms Victor jr Z28 dual 4 barrel cross ram SY1 Some serious lift and serious rpm. The dual 4 cross ram and the sy 1 were built for high rpm operation. I run an sy1 with the correct 830 Holley, on a nice little 350, .480 lift flat tappet hydraulic cam, ported 882 heads, and more than 6500 flat out, it pulls to 7000. That intake pulls from take off to when ever I let out of it. I know numbers don’t lie, but the seat of the pant meter is all smiles!! I’ve got a brand new victor jr I’ve been told would make more power.
