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Author Topic: Cross Ram Z in action - sorta - check er out  (Read 4767 times)
aaronz28
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« on: October 08, 2013, 09:33:10 PM »

finished my Crossram Conversion -

LOVE IT - very driveable and after a few thousand miles, plugs still look new Cheesy

https://www.youtube.com/watch?v=SGkwsho-zbA&list=UUzOqCQc0JKM43SLQ6d-Nn-Q
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1968RSZ28
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« Reply #1 on: October 08, 2013, 09:39:11 PM »

Bad as hell!!  Nice job, Aaron!

Paul
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BillOhio
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« Reply #2 on: October 08, 2013, 11:00:49 PM »

Very nice. What gears are in the car?
Guitar sounds good too!
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1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
hgger69
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« Reply #3 on: October 09, 2013, 01:30:08 AM »

Looks fantastic and I really love that aggressive sound!  Cool
...wonder what it would take to make my 355 sound like that.....  Smiley
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Regards

Hakan from Sweden
1969 Camaro X44, hugger orange, 355, TH350, 4:10 12 bolt Posi, RPO Z87, black/white houndstooth, 14" steel wheels & dog dish, 02D built
www.hakansmotorsida.com
aaronz28
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« Reply #4 on: October 09, 2013, 07:02:37 AM »

thanks -  i have it geared with wide ratio M22 auto gearset (2.54 1st) and 4.56 - so it certainly has the benefit of torque multiplication for sure. and it has a 10# flywheel.

I like it idling at 1000 rpm, which is probably a tad low -  but rollig out of a stop at 12-1400 is easier than the 30/30 was with 11 to 1. (same gears)

honestly, i can't make full use of this cars power - if you nail the throttle, the tires comes loose at any speed above 3000 rpm.   The last time I had it out, i thought i'd wind it up on a freeway entrance ramp.... i eased into it in 1st, and then when it hit 5500 in 2nd, it started floating out on me....

needs more rubber Cheesy
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BillOhio
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« Reply #5 on: October 09, 2013, 08:59:58 AM »

My car had the 140 cam since about 1970, guy installed it and springs with aluminum retainers. Retainers were prone to cracking so its a wonder I have original engine. My car had 4.88s but just took them out. Not much fun on freeway. Mine likes 1000 also. I would think your compression would be a big help.
Hakan, Anymore they have decided that nasty idle isn't needed to make horsepower. I had a 383 built with dart products parts and it has a somewhat small roller in it. My 472 hemi has a small roller in it and its making right at 600 horse at 6000 rpm. Just over 10:1 in pump gas. It idles about 900 and is very calm. I have a dyno and exhaust sound video on You tube under bill foos if you want to hear it. Rollers are great with the oil we have now too
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1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
doomer
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« Reply #6 on: October 15, 2013, 12:19:06 PM »

Sweet. That's not the $25k NOS crossram setup from HeartbleatCity was it? lol
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aaronz28
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« Reply #7 on: October 15, 2013, 12:39:19 PM »

god no - its actually a repop manifold -  when i was making the video, i said NOS parts - but didn't intend to mislead -  however the carbs are new production holley, and the manifold is the a repop with port matched intake etc.

thanks
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janobyte
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« Reply #8 on: October 15, 2013, 02:26:45 PM »

Very well done !
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aaronz28
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« Reply #9 on: October 15, 2013, 02:27:46 PM »

thanks!
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BULLITT65
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« Reply #10 on: October 19, 2013, 01:03:43 AM »

So if you don't mind telling us what did the repop set up run from start to finish? (the intake and up)
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
BillOhio
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« Reply #11 on: October 20, 2013, 09:46:28 AM »

The ones I heard fit nice, an ebayer Reesmooth has.3300 and needs gaskets and linkages. Throttle cable. Would be fun to play with and what eye appeal. 
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1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
BULLITT65
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« Reply #12 on: October 20, 2013, 11:01:10 AM »

The eye appeal is the main incentive that I see for installing one. From all the original articles I have read it sounds like the x ram was not street friendly, and it was hard to take advantage of the cam and x ram setup. I have a god article from Car Life ( August of 69), where they tested both and came away with the opinion that the x ram had a coolness factor to it, bt performance wise the stock 4 barrel would beat it in nearly every instance.
I would love to drive one just to se the difference Shocked
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
JKZ27
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« Reply #13 on: October 23, 2013, 02:37:24 PM »

Coolness no doubt! But, the crossram had to make a positive difference on the track at least, don't you think? From my SCCA days, if it didn't make the car faster it was worthless. Nobody gave a crap about coolness. Cool I can't imagine all that engineering, set-up, and added weight only to be out performed by a single 4. I've heard it many times that a single 4bbl will perform better than a 2x4bbl in most cases and I believe that to be true for the street but, with the right combination and tuning, that crossram HAS to do something more...Curious.

John
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69 RS/SS Cortez Silver, L48 MC1
68 RS Ash/Ivy Gold 327EFI M20
79 Z28 Brown LM1 M21
04 SRT 10
BULLITT65
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« Reply #14 on: October 23, 2013, 03:32:49 PM »

I believe what they were alluding to in the article was if you were at the track and in that high rpm band most of time then you would benefit from the x ram. On the street/strip the  780 was the way to go.
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1969 garnet red Z/28 46k mile unrestored X77
Looking for 3192477 (front) spiral shocks 3192851 (rear) please
Looking for an original LOF soft ray windshield
Looking for original Delco side post negative battery cable part # 6297651AV
janobyte
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« Reply #15 on: October 23, 2013, 04:51:12 PM »

Sounds like aaronz/28 also set the engine up correct 12.5:1 compression ,surely reconditioned the rods , JE pistons ? Heads massaged ?  more hp=more fuel requirements ( lbs/hr)  Is it demanding what the cross rams able to supply maybe/maybe not----looks great, plugs are clean. Quite the sleeper and should pull  some new factory muscle hard over 100 ( per Car Life 1968 , they were good for 136-138 in stock trim if that's saying anything) Pretty good for an old battle horse!  Maybe pick up another set of wheels/tires to put the power down to the pavement. Great package !
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ban617
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« Reply #16 on: January 01, 2014, 02:13:21 PM »

  The car looks really nice...What kind of headers are on it ?
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Everett#2390
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« Reply #17 on: January 01, 2014, 07:21:37 PM »

Thanks for the memories. Awesome sound I have not heard with today's technology, unless it is a recording.
And the Camaro looks nice also.
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A flashlight is a case for dead batteries.
69Z28-RS
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« Reply #18 on: January 01, 2014, 09:50:50 PM »

I'd love to have heard it full bore..  getting a *double shot* (of his baby's love) .. Smiley  .. from those dual Holleys..  Smiley
It takes a LOT of horsepower and a lot of RPM to justify all that cfm... Smiley

I like his music too.. and he's obviously an afficionada... Smiley
Wanna buy my old Dual 1219 ?  Smiley
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
satman
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« Reply #19 on: March 18, 2014, 01:01:43 PM »

Just a quick response from a newby ..............I would have to disagree with Johns comments about the performance of Cross Ram manifold. We ran the manifold on our 67 Camaro in the Trans-Am series and although we didn't have a dyno we found the manifold to give us a real power boost probably at least 50 H.P.
Here is a link to my partner Dennis and I putting the finishing touches on our 302 race engine that we ran circa 1969.
By the way the complete set up with carbs cost us around $500 back in the day

http://satman.typepad.com/photos/the_transam_series/oie_jpg.html
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SgtHawkUSMC
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« Reply #20 on: March 18, 2014, 01:50:29 PM »

Just a quick response from a newby ..............I would have to disagree with Johns comments about the performance of Cross Ram manifold. We ran the manifold on our 67 Camaro in the Trans-Am series and although we didn't have a dyno we found the manifold to give us a real power boost probably at least 50 H.P.
Here is a link to my partner Dennis and I putting the finishing touches on our 302 race engine that we ran circa 1969.
By the way the complete set up with carbs cost us around $500 back in the day

http://satman.typepad.com/photos/the_transam_series/oie_jpg.html
Those were some great pics. For what it's worth, I WISH my truck and trailer got the 10 mpg you were complaining about in one of them!

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Hawk
69 SS396 L34 M21 BS Hugger Orange
janobyte
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« Reply #21 on: March 18, 2014, 01:54:10 PM »

Never get enough of those old pics--too bad no sound clip of you winding it up on a straight away. Kinda sound that stands the hair on my arms !
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satman
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« Reply #22 on: March 18, 2014, 06:16:26 PM »

After 1972 Trans-Am series was winding down so we sold the car to some local stock car racers, in hindsight not one of my sharpest moves................. Probably almost as bad a move was trading the intake manifold for an oil burner, I think they go for around $25,000 today, the manifold that is not the oil burner.
The good news gas was cheap in those days and the other thing that helped was the track supplied us with free Sunoco racing fuel so some of that usually found its way into our Nascar refueling cans for the trip home.

Al
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