'82 cross-fire engine mods?
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
'82 cross-fire engine mods?
I was wondering what some of you has done to increase the HP of your cross-fire engines. I'm trying to get some ideas on how to increase it's HP. So far, I have a Hypertech chip and Flowmaster mufflers. What else can I do that's also smog legal?
Pro
Joined: May 2002
Posts: 518
Likes: 17
Your intake manifold is a hopeless restriction, and unportable, so aside from building a TPI/Super Ram/Mini Ram motor with new electronics etc, you could try this intake...
http://www.x-ram.com/
...with some good heads, good exhaust, and a better cam.
Whether this passes smog in your area is something you'll need to look into?
http://www.x-ram.com/
...with some good heads, good exhaust, and a better cam.
Whether this passes smog in your area is something you'll need to look into?
Pro
Joined: Oct 2006
Posts: 564
Likes: 0
From: London
Well where do we start:
1. cam
http://www.compperformancegroupstore...Category_Code=
2. heads
http://store.summitracing.com/partde...5&autoview=sku
3.
1.6 magnum roller rockers
4.
intake
http://www.x-ram.com/crossfireinfo.html
5.
Use a fuel pump from an 85 model(c4)
6.
Use a fuel regulator.
7.
Change gears in diff
8.
Upgrade computer.
When this is done you will have a nice fast crossfire.
The heads are the ones i would choose there are lots more options.
Plus the cam is built with the crossfire in mind and is computer friendly.
1. cam
http://www.compperformancegroupstore...Category_Code=
2. heads
http://store.summitracing.com/partde...5&autoview=sku
3.
1.6 magnum roller rockers
4.
intake
http://www.x-ram.com/crossfireinfo.html
5.
Use a fuel pump from an 85 model(c4)
6.
Use a fuel regulator.
7.
Change gears in diff
8.
Upgrade computer.
When this is done you will have a nice fast crossfire.
The heads are the ones i would choose there are lots more options.
Plus the cam is built with the crossfire in mind and is computer friendly.
Burning Brakes
Joined: Jan 2006
Posts: 1,154
Likes: 1
From: St Augustine FL
Ok if you are going to go with a larger cam, heads etc. and the xram intake. You need a new ECM the stock ECM is slow and weak unfortunately it can not tolerate much of change from the stock set up. your cell phone has a more powerfull computer in it then the stock ECM.
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Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
yes, CFI system has a fuel pressure regulator in the dr. side TB. All fuuel injection systems have a pressure regulator to maintain proper system rpessure since the fuel metering (injector pulse width/open time) is calculated assuming the system is at a given rpessure, otherwise the amount injected is not correct anymore.
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
Ok if you are going to go with a larger cam, heads etc. and the xram intake. You need a new ECM the stock ECM is slow and weak unfortunately it can not tolerate much of change from the stock set up. your cell phone has a more powerfull computer in it then the stock ECM.
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
Well where do we start:
1. cam
http://www.compperformancegroupstore...Category_Code=
2. heads
http://store.summitracing.com/partde...5&autoview=sku
3.
1.6 magnum roller rockers
4.
intake
http://www.x-ram.com/crossfireinfo.html
5.
Use a fuel pump from an 85 model(c4)
6.
Use a fuel regulator.
7.
Change gears in diff
8.
Upgrade computer.
When this is done you will have a nice fast crossfire.
The heads are the ones i would choose there are lots more options.
Plus the cam is built with the crossfire in mind and is computer friendly.
1. cam
http://www.compperformancegroupstore...Category_Code=
2. heads
http://store.summitracing.com/partde...5&autoview=sku
3.
1.6 magnum roller rockers
4.
intake
http://www.x-ram.com/crossfireinfo.html
5.
Use a fuel pump from an 85 model(c4)
6.
Use a fuel regulator.
7.
Change gears in diff
8.
Upgrade computer.
When this is done you will have a nice fast crossfire.
The heads are the ones i would choose there are lots more options.
Plus the cam is built with the crossfire in mind and is computer friendly.
Nice! Those heads are 50 state legal.
Burning Brakes
Joined: Jan 2006
Posts: 1,154
Likes: 1
From: St Augustine FL
You still have to change the ECM..I have the hyperchip aswell. Unless you spend some $$$ and don't care about an original car the 82 is only a nice looking street cruiser. My 82 is 98% original. I am thinking about buying a new gm crate motor,playing with a beefed up crossfire system ( I have a complete spare crossfire system that I am going to send out for mods) and storing the original motor.
Listen to TT he knows what he is talking about and take a look on the crossfire forum.
Listen to TT he knows what he is talking about and take a look on the crossfire forum.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
That is a flat out lie. the intake is VERY portable and doing so is the single best thing you can to to a CFI fed engine. Ask me how I know.
1. Port the bejesus out of the intake
2. Check your fuel presure and replace the pump if necessary
3. Optimize the timing and FP mechanically for your combo
4. Headers and exhaust, Headers and exhaust, Headers and exhaust!
Changing ECM's is the BEST way to go about tuning, but NOT NECESSARY! If money is tight, there are other ways to achieve the desired results...
I ran 13.2x's @ 105 mph and got 24 highway mpg w/my CFI set up...al on the original, bone, box-stock ECM and chip.
Ask for details if you're interested...
-Tom
1. Port the bejesus out of the intake
2. Check your fuel presure and replace the pump if necessary
3. Optimize the timing and FP mechanically for your combo
4. Headers and exhaust, Headers and exhaust, Headers and exhaust!
Changing ECM's is the BEST way to go about tuning, but NOT NECESSARY! If money is tight, there are other ways to achieve the desired results...
I ran 13.2x's @ 105 mph and got 24 highway mpg w/my CFI set up...al on the original, bone, box-stock ECM and chip.
Ask for details if you're interested...
-Tom
Last edited by Tom400CFI; Jan 13, 2007 at 02:20 PM.
Pro
Joined: May 2002
Posts: 518
Likes: 17
Geez, a lie eh?
If you think 105 MPH trap speeds are fast then go for it, otherwise junk it and get the X-Ram, or upgrade to a Super Ram or Mini Ram depending on your power curve goals?
If you think 105 MPH trap speeds are fast then go for it, otherwise junk it and get the X-Ram, or upgrade to a Super Ram or Mini Ram depending on your power curve goals?
That is a flat out lie. the intake is VERY portable and doing so is the single best thing you can to to a CFI fed engine. Ask me how I know.
1. Port the bejesus out of the intake
2. Check your fuel presure and replace the pump if necessary
3. Optimize the timing and FP mechanically for your combo
4. Headers and exhaust, Headers and exhaust, Headers and exhaust!
Changing ECM's is the BEST way to go about tuning, but NOT NECESSARY! If money is tight, there are other ways to achieve the desired results...
I ran 13.2x's @ 105 mph and got 24 highway mpg w/my CFI set up...al on the original, bone, box-stock ECM and chip.
Ask for details if you're interested...
-Tom
1. Port the bejesus out of the intake
2. Check your fuel presure and replace the pump if necessary
3. Optimize the timing and FP mechanically for your combo
4. Headers and exhaust, Headers and exhaust, Headers and exhaust!
Changing ECM's is the BEST way to go about tuning, but NOT NECESSARY! If money is tight, there are other ways to achieve the desired results...
I ran 13.2x's @ 105 mph and got 24 highway mpg w/my CFI set up...al on the original, bone, box-stock ECM and chip.
Ask for details if you're interested...
-Tom
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
The X ram won't flow well either, the lower manifold will but the top box/planum is a very shallow thing meant to adapt the stock TB's and linkage and from a flow dynamics standpoint it's a nightmare, multiple 90 degree turns, no height in the path , opposing flows. The results of the X-ram can be had w/ the stock manifold with some work. Tom, what was dominic Sorresso running?
Last edited by Twin_Turbo; Jan 14, 2007 at 12:56 PM.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
The CFI is the most portable intake I've ever seen. You may not end up with 500 hp, but you can realize a HUGE improvement. Trapping 105 through a manifold that originally traps what, 85 mph? That (and the lbs of metal that you can remove) is the definition of "portable".
So maybe "lie" was a bit strong, but what you were posting was the opposite of the actual facts, so perhaps it was just "gross misinformation".
TT, What do you mean regarding Dom? Intake wise or trap speed? Dom is running a extude honed intake IIRC, and was trapping around 102, last I heard.
-Tom
