82 CFI performance upgrades??
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Melting Slicks
Joined: Jun 2011
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82 CFI performance upgrades??
I'm sure this has been discussed before but I'm fairly new here so bare with me. I want to keep my car looking stock but am looking for a little more power. I've found a Renegade intake although no one will email me back but other than boring the throttlebodies to 2" and a true dual exhaust is there much else I can do?? Maybe a set of aluminum GM heads off of a ZZ4?? Nothing crazy like I say would like to keep it looking stock. I would like to dump the air pump, EGR, ect.
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Melting Slicks
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Race Director
Joined: Nov 2002
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From: Taylor Michigan
I think that cam may only be available at GM performance....to the best of my knowledge it can be used with a stock converter...as 350 hp Vettes were both turbos or 4 speeds....ask for the 350 hp 327 65-68 last 3 part numbers are 151...for some unknown reason I believe 152 may also reference that 151 cam...and would be better with a set of 1970 LT-1 heads.....
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Joined: Dec 2007
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From: Cramerton NC
I believe DCS is still in business, however, they can be difficult to reach, they are a one or two man operation. Their products are top notch when you are able to get them. The renegade is out there and from reports of those who have them make a big difference. You can port your old intake but it will never flow as much as the renegade will and it it is a bunch of work to do. Keep in mind that the crossfire is a system, injectors, ECM, cam and heads all are part of the puzzle.
Team Owner
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From: Southbound
Cruise-In II Veteran
No disrespect, Al, but have you had a chance to drive your car much? Why not leave it as is, drive it this spring and summer, get aquainted with it, then decide what you might want to do?
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Le Mans Master
Joined: Jul 2000
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From: columbia city in
tom@crossfireinjection.net <tom@crossfireinjection.net>this is who you need to talk to .he makes the intake that you want.before you change anything else have you changed your cat .they plugup .change it or open it up.
Thread Starter
Melting Slicks
Joined: Jun 2011
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No in all honesty I've drove it twice since I bought it. I know it's nuts. I'm just getting ideas. Thanks though, I do want to leave it as is but maybe just a little masaging. (spelling??)
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From: IL, Chicago area.
St. Jude Donor '14-'15-'16
I'm sure this has been discussed before but I'm fairly new here so bare with me. I want to keep my car looking stock but am looking for a little more power. I've found a Renegade intake although no one will email me back but other than boring the throttlebodies to 2" and a true dual exhaust is there much else I can do?? Maybe a set of aluminum GM heads off of a ZZ4?? Nothing crazy like I say would like to keep it looking stock. I would like to dump the air pump, EGR, ect.
Any of the things you mentioned will be severely downgraded by the CFI, it is not made for power.
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From: San Jose CA
Le Mans Master
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From: columbia city in
you can make up to 400 hp with the cross-fire .i would think on the street that would be plenty.if you want to make easy hp the carb would be the way to do it . if you want to work with what you have that can be done to.300 hp is easy to get just by changing cam and heads and porting out the intake with a good exhaust .over that you have to bore out the throttle bodys and change the computer.race car go carb .a nice street car with good mpg the cross-fire is fine .before i get beat up ,,,,,i have done some of these mods and i know of others that have done all of them.my thick skin flame suit is on.
Race Director
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From: IL, Chicago area.
St. Jude Donor '14-'15-'16
Yup, I had an 84 with the CFI back in 1991 and attempting to wake that pitiful motor up was a waste of time because of that lame intake and small throttle bodies. Everyone I spoke to advised "ditch the crossfire" and put a TPI top end on it. Also it was hard to find guys who knew how to balance the throttle bodies so it at least ran smooth.
Le Mans Master
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From: columbia city in
that may have been true back in 1991,but today we have new intakes and people who can tell you how to balance the throttle bodys .that is something that you rarely do unless some one has messed with the linkage.http://www.crossfireinjection.net/gallery.htmtake a look at what is there for the cross-fire .if you took off the fuel injection from a mid year you would pay big bucks to find one now .they took them off then because no one new how to fix them ,now they do and there car is worth more with the injection .this motor will never be a lt1 or a l88 but it can be a great driver.
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Melting Slicks
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that may have been true back in 1991,but today we have new intakes and people who can tell you how to balance the throttle bodys .that is something that you rarely do unless some one has messed with the linkage.http://www.crossfireinjection.net/gallery.htmtake a look at what is there for the cross-fire .if you took off the fuel injection from a mid year you would pay big bucks to find one now .they took them off then because no one new how to fix them ,now they do and there car is worth more with the injection .this motor will never be a lt1 or a l88 but it can be a great driver.
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From: San Jose CA
Yes - and like I said, they are difficult to get. That doesn't solve the antiquated engine management system either, although you could probably wriggle your way around adapting a modern fuel management system to it.
By the time you're done, you will have spent a lot more than you would have switching to something else. But to some, I'm sure it's worth it and I can't blame them.
By the time you're done, you will have spent a lot more than you would have switching to something else. But to some, I'm sure it's worth it and I can't blame them.
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Joined: Dec 2007
Posts: 83
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From: Cramerton NC
If properly tuned and balanced the crossfire injection is reliable and performs as well as unmodified carbed engines of the low horsepower era. It is not a high performance system, it wasnt intended to be. Most mechanics know NOTHING about the crossfire except the horror stories they have heard and few have ever seen one. Unless you find a mechanic who KNOWS crossfire, you are asking for trouble if you let them touch it. Resourses are available online that can enable you to do most of your mods yourself. Try the email that Terry82 posted, they can help you. Modifications on the CFI are more involved than a carbed engine but possible. The renegade is supposed to make almost 30 more hp to the rear wheels without any further modifications and is backed up by dyno pulls. If you want more than that, you are goingto have do more drastic mods as Terry82 has said. Heads, cam, exhaust, larger injectors, bored throttle bodies, and ECM mods.
Last edited by crossfire1982; Feb 14, 2012 at 02:30 PM.