Before X-Ram Dyno's - 84 Crossfire Vette
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From: Austin TX
Before X-Ram Dyno's - 84 Crossfire Vette
I am going to install the X-Ram intake and run the before and after dyno's. I've already posted the before dyno to my pic page at: http://photos.yahoo.com/kenfusion242
If anyone has already been through this install please feel free to give me any advice.
-Ken
If anyone has already been through this install please feel free to give me any advice.
-Ken
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Re: Before X-Ram Dyno's - 84 Crossfire Vette (kenfusion)
Let us know how it works out. I'm in the process of porting and polishing the crossfire manifold.
Safety Car
Joined: Sep 2001
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From: modland CT
Re: Before X-Ram Dyno's - 84 Crossfire Vette (GiDvEtTe84)
i hope you dont run into the problems i ran into when i installed the x-ram on my car. :confused: my car developed a rev limiter problem even after installing new hi pressure fuel pump & new distributer. i was gonna try the valve springs next but decided to get a stroker & hopefully end the headaches. :confused: good luck... :cheers:
Drifting
Joined: Nov 2001
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From: Bucks county Pa
Re: Before X-Ram Dyno's - 84 Crossfire Vette (kenfusion)
Are you planning a cam and head work to take full advantage of an X-ram.What will you do for injectors? I persanally think 350 horses would be realistic with the right parts. :cool: Keep us posted
Burning Brakes
Joined: Feb 2002
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From: Montrose Colorado
Re: Before X-Ram Dyno's - 84 Crossfire Vette (blk90rdstr)
You might want to visit http://www.turbocity.com they have larger throttle bodies for the CFI plus updated ECM'S so you can take full advantage of your other mods.
Burning Brakes
Joined: Apr 2001
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From: Langley, BC, Canada
Re: Before X-Ram Dyno's - 84 Crossfire Vette (vettl83)
while thats a good idea turbo city is a total rip off, Dan plett on the crossfire foum can bore your tbi's to 2"(650cfm) for around 100 and sleeve them to 2.130" (750cfm) for 250 or so.
As for the ecm its just a 7747 from a 87-91 pickup 40-50 bucks from a junkyard, and we have better starter proms that turbo city.
As for the ecm its just a 7747 from a 87-91 pickup 40-50 bucks from a junkyard, and we have better starter proms that turbo city.
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From: Austin TX
Re: Before X-Ram Dyno's - 84 Crossfire Vette (vettl83)
Now we are truly tempting the devil...
In the engine I was originally planning to do the Intake, 1.6.1 roller rockers ans new valve covers. I have been really fighting off the urge to dig deeper and throw a more agressive cam, heads and tbi's. I'll keep you posted on my battle with temptation... l
In the next few weeks I will also be moving to 3.73 gears and to some sort of performance exaust. I need to do some more homework on what I am going to do with the exaust as the Vette is my daily cruiser and a racing exaust setup will drive the wife bonkers in about 5 minutes.
Many thanks for all the advice and great part links. Please keep em' coming! :reddevil
In the engine I was originally planning to do the Intake, 1.6.1 roller rockers ans new valve covers. I have been really fighting off the urge to dig deeper and throw a more agressive cam, heads and tbi's. I'll keep you posted on my battle with temptation... l
In the next few weeks I will also be moving to 3.73 gears and to some sort of performance exaust. I need to do some more homework on what I am going to do with the exaust as the Vette is my daily cruiser and a racing exaust setup will drive the wife bonkers in about 5 minutes.
Many thanks for all the advice and great part links. Please keep em' coming! :reddevil
Burning Brakes
Joined: Feb 2002
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From: Montrose Colorado
Re: Before X-Ram Dyno's - 84 Crossfire Vette (kenfusion)
You could go with a true dual exhaust system and loose the cat and double y-pipes. I did this on my 84 with good results. I think you can still purchase them from Central Corvette or Mid-America. As for sound you can put any mufflers you want on the set up. I chose the Mid-America square tip ZR-1 style (if you want to call them mufflers) they are more like two little round glass-packs on each side and they will wake the dead. We don't have any noise police here but after three years I am considering changing them to something else, while I still have some hearing left. Good luck with your CFI project.
Burning Brakes
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From: Langley, BC, Canada
Re: Before X-Ram Dyno's - 84 Crossfire Vette (kenfusion)
i know how you feel..i was just planning on porting the intake, now i've bought almost all the parts i need to port the heads, cam, exhaust, lid spacer..im guess-timating 275hp With the xram your setup for a good deal of hp, add larger injectors and 750cfm tbi's and your good for 400hp.
But then that all costs money :D
But then that all costs money :D
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From: Los Angeles, CA
Re: Before X-Ram Dyno's - 84 Crossfire Vette (nsimmons)
Nick,
As a fellow owner of a Lt. Met. Bronze '84, I've got to know: do you have any dyno or perf figures on your ride with the mods? Mine is stock...for the moment.
As a fellow owner of a Lt. Met. Bronze '84, I've got to know: do you have any dyno or perf figures on your ride with the mods? Mine is stock...for the moment.
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From: Los Angeles, CA
Re: Before X-Ram Dyno's - 84 Crossfire Vette (kenfusion)
Ken,
I'm in the planning stage on my own '84, so I'm gonna be keeping an eye on this thread to see how things come out.
As for my two cents on the exhaust issue...
Magnaflow does a setup with hi-flow front Y, hi-flow cat (they sub in an '86-91 unit), and cat-back with "Mirror Finish Performance Mufflers." It's all 2.5-inch tubing, which should support hp numbers into the 300s. That's what I'm planning on going with, unless I get a better idea.
I also like Dynamax's cat-back, 'cause it has a balance tube on the rear Y. It's 2-1/4-inch tubes, and they dont' have the other goodies, but you can always mix and match.
The straight pipes and all that are nice, but I'm not prepared to sacrifice all noise control.
There's an interesting thread up the line that talks about swapping in a true dual exhaust system from a later C4. Some seem to think it's worth it, some don't . Might be worth looking at.
I'm in the planning stage on my own '84, so I'm gonna be keeping an eye on this thread to see how things come out.
As for my two cents on the exhaust issue...
Magnaflow does a setup with hi-flow front Y, hi-flow cat (they sub in an '86-91 unit), and cat-back with "Mirror Finish Performance Mufflers." It's all 2.5-inch tubing, which should support hp numbers into the 300s. That's what I'm planning on going with, unless I get a better idea.
I also like Dynamax's cat-back, 'cause it has a balance tube on the rear Y. It's 2-1/4-inch tubes, and they dont' have the other goodies, but you can always mix and match.
The straight pipes and all that are nice, but I'm not prepared to sacrifice all noise control.
There's an interesting thread up the line that talks about swapping in a true dual exhaust system from a later C4. Some seem to think it's worth it, some don't . Might be worth looking at.
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From: Austin TX
Re: Before X-Ram Dyno's - 84 Crossfire Vette (JohnEVette)
John,
Sure, let me be the gunie pig! j/k We are getting close! I took this Friday off and am hopefull to do both the intake and gears this weekend. I'm hoping the intake gasket comes in tomorrow as planned. I'll let you guys know how the adventure goes. Any interest in some pics of the process?
Sure, let me be the gunie pig! j/k We are getting close! I took this Friday off and am hopefull to do both the intake and gears this weekend. I'm hoping the intake gasket comes in tomorrow as planned. I'll let you guys know how the adventure goes. Any interest in some pics of the process?
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From: Austin TX
Re: Before X-Ram Dyno's - 84 Crossfire Vette (nsimmons)
Nick, was there a particular reason why you are doing the port and polishing rought v.s. just buying a set of heads and cam?
So far I am thinking (longer term - next year) to eventually do a full rebuild and replace the heads, cam, bearings etc. and go with 6" piston arms and appropriate piston heads. Would I be missing out on something going thid direction?
So far I am thinking (longer term - next year) to eventually do a full rebuild and replace the heads, cam, bearings etc. and go with 6" piston arms and appropriate piston heads. Would I be missing out on something going thid direction?
Burning Brakes
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From: Langley, BC, Canada
Re: Before X-Ram Dyno's - 84 Crossfire Vette (kenfusion)
John, my car ran a 15.1 stock now it runs mid 14's with my best 14.3, after my mods im estimating 13's, im also adding an ads chip soon. I've seen enough people run 14 flat with my mods and a chip and shift kit.
Ken,
MONEY! All this work im doing is going to cost me approx 250-300 dollars thats including the cam, porting tools, complete felpro gasket set. Im also replacing every seal in the engine. Another $100 for headers, 20 for chrome tips, and what ever the exhaust work costs. That wont be for 6 or 7 weeks.
If i was to buy a set of heads it would cost around a grand.
Your plan sounds good. You really have no limitaion with an xram, it flows as well as the super ram the tpi guys use, its just a little more do it yourself with the crossfire. As for a stock manifold, if you do some heavy grinding on it (10-12hours) you can get about 325-350hp out of the engine, good enough to run low-mid 13's. Thats about it for the stock manifold, it just cant be opened up any more without serious machine work.
[Modified by nsimmons, 11:17 PM 5/8/2002]
Ken,
MONEY! All this work im doing is going to cost me approx 250-300 dollars thats including the cam, porting tools, complete felpro gasket set. Im also replacing every seal in the engine. Another $100 for headers, 20 for chrome tips, and what ever the exhaust work costs. That wont be for 6 or 7 weeks.
If i was to buy a set of heads it would cost around a grand.
Your plan sounds good. You really have no limitaion with an xram, it flows as well as the super ram the tpi guys use, its just a little more do it yourself with the crossfire. As for a stock manifold, if you do some heavy grinding on it (10-12hours) you can get about 325-350hp out of the engine, good enough to run low-mid 13's. Thats about it for the stock manifold, it just cant be opened up any more without serious machine work.
[Modified by nsimmons, 11:17 PM 5/8/2002]
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From: Austin TX
Re: Before X-Ram Dyno's - 84 Crossfire Vette (nsimmons)
Nick,
That is awesome! I wish I had the knowledge and time to do a similar rought. Let us know how all the port and polishing goes, I would really like to learn more about the process.
Have a good one!
Ken
That is awesome! I wish I had the knowledge and time to do a similar rought. Let us know how all the port and polishing goes, I would really like to learn more about the process.
Have a good one!
Ken
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From: Los Angeles, CA
Re: Before X-Ram Dyno's - 84 Crossfire Vette (kenfusion)
Well Ken, all I'll say is that I'd like to know how things come out...and that I'd like to take Friday off to work on my car.
Nick, thanks for the numbers. The first things I'm doing to my '84 is a TransGo shift kit; the second thing I'm doing is a trans cooler. Then I'll head out to the street legal drags at Cal Speedway just for s***s and grins.
By the way, any of you guys have any thoughts on installing an oil cooler on the X-fire? I think it's a good bit of insurance, others seem to think its sort of overkill on an engine that hardly revs to 5 grand. I just want to keep things cool when I autocross and do Silver State.
(Well, now I know you can't say s*** on the Forum, but "poopies" is alright.)
[Modified by JohnEVette, 12:27 PM 5/9/2002]
[Modified by JohnEVette, 12:29 PM 5/9/2002]
Nick, thanks for the numbers. The first things I'm doing to my '84 is a TransGo shift kit; the second thing I'm doing is a trans cooler. Then I'll head out to the street legal drags at Cal Speedway just for s***s and grins.
By the way, any of you guys have any thoughts on installing an oil cooler on the X-fire? I think it's a good bit of insurance, others seem to think its sort of overkill on an engine that hardly revs to 5 grand. I just want to keep things cool when I autocross and do Silver State.
(Well, now I know you can't say s*** on the Forum, but "poopies" is alright.)
[Modified by JohnEVette, 12:27 PM 5/9/2002]
[Modified by JohnEVette, 12:29 PM 5/9/2002]
Burning Brakes
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From: Langley, BC, Canada
Re: Before X-Ram Dyno's - 84 Crossfire Vette (JohnEVette)
good call on the transgo go, its the only way to go, ones in my cars future too.
As for the oil temp, i think its over kill unless your gonna road race the car. I took my car for a 300 mile road trip through steep mountain roads a few weeks ago, the engine worked pretty hard, oil never got over 179
As for the oil temp, i think its over kill unless your gonna road race the car. I took my car for a 300 mile road trip through steep mountain roads a few weeks ago, the engine worked pretty hard, oil never got over 179
Intermediate
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From: Los Angeles, CA
Re: Before X-Ram Dyno's - 84 Crossfire Vette (nsimmons)
Nick,
There's actually a thread down the line discussing oil coolers. If you're only seeing 179 degrees, I'm wondering if I have other probs, since I normally see something around 225 degrees. Assuming that's a normal reading, my thinking is that a small cooler will help keep the temp there when I autocross and open-road race. In the scheme of things, though, I think the trans cooler is much more important.
There's actually a thread down the line discussing oil coolers. If you're only seeing 179 degrees, I'm wondering if I have other probs, since I normally see something around 225 degrees. Assuming that's a normal reading, my thinking is that a small cooler will help keep the temp there when I autocross and open-road race. In the scheme of things, though, I think the trans cooler is much more important.