X-Ram for crossfire vettes
Thread Starter
Racer
Joined: Sep 2005
Posts: 262
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From: Kissimmee Fl
X-Ram for crossfire vettes
Has anybody here heard about this conversion manifold for '82, '84 cross fire vettes? I bought one and have not put it on yet. I was wondering if anybody has tried it yet. Does it fit under the hood?
Race Director
Joined: Dec 1999
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yes it's a total POS. Just a Weiand X-celerator manifold milled down and an adapter plenum on top that the throttle bodies mount on, the top box is real shallow (otherwise it won't fit under the hood). It's not any better than a modified stock manifld, testing has shown as little as 12 HP gain over a total stock setup....and it isn't even a crossram either. From a flow dynamics standpoint that thing is a joke.....and it doesn't fit on an LS6 
Safety Car
Joined: Apr 2004
Posts: 3,997
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From: WAY DEEP INSIDE AMERICO,YES YOU LIVE HERE TO!! TX
Don't listen to TWIN TURBO 
that a great manifold and you will
enjoy the HP gains from it. they are AWESOME on a 383 or 406
You might want to beef up the rear end some, and
get a stout tranny for the torqe gains with that setup. Use forged internals
that a great manifold and you willenjoy the HP gains from it. they are AWESOME on a 383 or 406
You might want to beef up the rear end some, andget a stout tranny for the torqe gains with that setup. Use forged internals
Thread Starter
Racer
Joined: Sep 2005
Posts: 262
Likes: 0
From: Kissimmee Fl
Is this a "good cop, bad cop" routine you guys are laying on me? This is for my '82 vette, not my '68. The '82 is all original and only has 39k miles so I am not going to modify anything that I cannot return to stock. Not that it is all that collectible but it feels wrong to mess with it, especially since I have the '68 to play with.
I have long heard of the limitations of the stock intake and the X ram supposedly allows it to breathe much better at higher rpm's. I recall the manufacturer claiming that it is good for 50hp or more. Can somebody give me a serious response to my question?
I have long heard of the limitations of the stock intake and the X ram supposedly allows it to breathe much better at higher rpm's. I recall the manufacturer claiming that it is good for 50hp or more. Can somebody give me a serious response to my question?
Racer
Joined: Nov 2002
Posts: 359
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I think the weakness in the cross fire for power production is not the manifold. The throttle bodies are just too restrictive to flow enough air to make serious power.
Last edited by Russ Bellinis; Sep 14, 2005 at 06:58 PM.
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Thread Starter
Racer
Joined: Sep 2005
Posts: 262
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From: Kissimmee Fl
Actually Russ, the weakness is mostly caused by the intake manifold. I would suggest that only those with some knowledge of the X Ram and/or crossfire system respond. The responses so far have not been helpful.
Race Director
Joined: Dec 1999
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I could start writing down stuff about the pathetic cam, how to rework the throttle bodies, the manifold, small tricks, use a different manifold and if so which ones, how to rework the control system to make it tunable...but then again only those w/ knowledge are allowed to reply..and I don't think i'll waste my time then. There is a place on the internet that can answer all your questions....if you find it, look closely...you may be in for a surprise.
Racer
Joined: Mar 2005
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From: AZ
Drifting
Joined: Jan 2004
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From: Broken Arrow Oklahoma
St. Jude Donor '09
I have heard the xram will wake up the crossfire. It will clear the stock hood using the stock air cleaner housing. If you want to gain 15hp it should do the trick. If you bolt it on do not expect a 50hp gain on your all stock engine. The xram does not give enough hp per dollar for me. I am running a gasket matched stock intake with a lid spacer and stock TB's. I have a 327/350hp gm cam, trick flow heads and long tube headers no cats. 1.6 rockers and davis HEI, ect. 354 gears and stock trans. Stock ecm/prom. 300 crank HP? My best time is 14.20.
I would bolt on the intake since you have it. Buy a msd module and a hp hei coil. Then get a set of gears(best buy!)IMO. With the 700r4 you can go up to 373 and still be drivable. Hope this answers the ?'s. I am no expert, I just went with what I thought would work. Email me if you want a nice random tech high flow cat for your 82. It bolts in just like the stock unit. $75.00 - paid 220.00 stevehash@sbcglobal.net
I would bolt on the intake since you have it. Buy a msd module and a hp hei coil. Then get a set of gears(best buy!)IMO. With the 700r4 you can go up to 373 and still be drivable. Hope this answers the ?'s. I am no expert, I just went with what I thought would work. Email me if you want a nice random tech high flow cat for your 82. It bolts in just like the stock unit. $75.00 - paid 220.00 stevehash@sbcglobal.net
Safety Car
Joined: Jan 2004
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From: North of Atlanta GA
St. Jude Donor '05
Originally Posted by Twin_Turbo
I wouldn't know...I know nothing about crossfires.
Listen to the Twin master, he's the guru. He knows stuff GM wish they knew!
Race Director
Joined: Jun 2001
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From: The Only Corvette in Gila Bend, Az.
St. Jude Donor '09
You guys sure are rough on the newbies......
The Xram is ok, if you do alot of other work on the motor at the same time, Heads and Cam are the other big upgrades....
But you can also get good performance out of the stock manifold with some porting work, of course you will still need to replace the heads and cam to see major improvements.
You can also replace the ECM to a newer "tunable" one. If you get carried away with upgrades it wont run without tuning...
BTW, TT was one of the founders of the CFI forum...Maybe that will help you decide who's pulling your leg here...
The Xram is ok, if you do alot of other work on the motor at the same time, Heads and Cam are the other big upgrades....
But you can also get good performance out of the stock manifold with some porting work, of course you will still need to replace the heads and cam to see major improvements.
You can also replace the ECM to a newer "tunable" one. If you get carried away with upgrades it wont run without tuning...
BTW, TT was one of the founders of the CFI forum...Maybe that will help you decide who's pulling your leg here...