84 C4 crossfire performance mods
Thread Starter
4th Gear
Joined: Feb 2008
Posts: 4
Likes: 0
From: PERTH, AUSTRALIA WA
84 C4 crossfire performance mods
Righto,
Gday all from downunder (western Australia)
If any one can give me any info would be much apreciated.
Im looking to squeeze some more power from my 1984 C4 cross fire and after trawling the net I have come up with the following,
Port the intake,
2040 Cam,
1.6 Roller Rockers,
3200 Hi Stall,
3.73 gears
Any feed back?
Also has any one had any experience with those performance chips you can get from Corvette America and Ecklers
Gday all from downunder (western Australia)
If any one can give me any info would be much apreciated.
Im looking to squeeze some more power from my 1984 C4 cross fire and after trawling the net I have come up with the following,
Port the intake,
2040 Cam,
1.6 Roller Rockers,
3200 Hi Stall,
3.73 gears
Any feed back?
Also has any one had any experience with those performance chips you can get from Corvette America and Ecklers
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
Those performance chips are a waste of money.
Port the living snot out of that intake. Take away as much meat as possible without damaging it of course.
Nice combo should give you that SOTP feel that your looking for I'm sure. Personelly I would go with 3:54's instead but thats just me
Port the living snot out of that intake. Take away as much meat as possible without damaging it of course.
Nice combo should give you that SOTP feel that your looking for I'm sure. Personelly I would go with 3:54's instead but thats just me
Thread Starter
4th Gear
Joined: Feb 2008
Posts: 4
Likes: 0
From: PERTH, AUSTRALIA WA
Those performance chips are a waste of money.
Port the living snot out of that intake. Take away as much meat as possible without damaging it of course.
Nice combo should give you that SOTP feel that your looking for I'm sure. Personelly I would go with 3:54's instead but thats just me
Port the living snot out of that intake. Take away as much meat as possible without damaging it of course.
Nice combo should give you that SOTP feel that your looking for I'm sure. Personelly I would go with 3:54's instead but thats just me
Thought they would be a waste of time.
Cheers for the heads up, I will give it a go.
Its hard to find anyone over in Western Australia that has had anything to do with corvettes
Melting Slicks
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
Loved Sydney
Thanks for the view of Perth.
After getting larger TBs, I was frustrated by the tiny ports, which I was told could not be enlarged. They kinda look that way, too, and really limit airflow.
I toyed with using a modified double quad intake or looking for a rare Smokey Yunick intake to put under the TBs, but eventually did the harder thing.
I may still use the TBI on the original engine, destined for my '55 F100. Any quickies on what you guys are doing to the CF intake to get some real power?
I did not like the 3.73s behind my warmed up CF; too little RPM and it felt like, shift-shift-shift-show's over; too quickly.
After getting larger TBs, I was frustrated by the tiny ports, which I was told could not be enlarged. They kinda look that way, too, and really limit airflow.
I toyed with using a modified double quad intake or looking for a rare Smokey Yunick intake to put under the TBs, but eventually did the harder thing.
I may still use the TBI on the original engine, destined for my '55 F100. Any quickies on what you guys are doing to the CF intake to get some real power?
I did not like the 3.73s behind my warmed up CF; too little RPM and it felt like, shift-shift-shift-show's over; too quickly.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 34
From: The Top of Utah
Originally Posted by whalepirot
After getting larger TBs, I was frustrated by the tiny ports, which I was told could not be enlarged. They kinda look that way, too, and really limit airflow.
RACE ON!!!
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Burning Brakes
Joined: Feb 2006
Posts: 1,098
Likes: 1
From: Webster Texas
My crossfire gained 4 tenths and 3mph in the quarter from just the porting of the intake. The 1.6-1 roller tipped rockers netted me 5 tenths and 4 mph. Porting the intake also gave 3-400 more useable rpms.
Melting Slicks
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
I guess I should search the X-fire place for pics. TY for the answer.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 34
From: The Top of Utah
Originally Posted by scottbeef
What kind of improvements did you get from just porting the intake?
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 34
From: The Top of Utah
Originally Posted by whalepirot
Knowing how tiny those ports are, I am not surprised. I have a pair of 2" TBs and saw little change.
Originally Posted by whalepirot
I guess I should search the X-fire place for pics. TY for the answer.
RACE ON!!!
Intermediate
Joined: Dec 2006
Posts: 27
Likes: 0
ecu mods
Can any members tell me where I can get a adaptor lead from the adl connection under dash to a lap top so I can see what is happening with my engine.
As I have just rebuilt the engine,I would like to get the best possible performance from the changes I have made,compression 10.3-1.2040 cam 1.6 r/rocker.Hedman long tube headers,no cats,true twin system with X pipe,also X-ram manifold with 2' bored t/bodies.
Any information along these lines would be well recieved.\
Cheers Gordon
As I have just rebuilt the engine,I would like to get the best possible performance from the changes I have made,compression 10.3-1.2040 cam 1.6 r/rocker.Hedman long tube headers,no cats,true twin system with X pipe,also X-ram manifold with 2' bored t/bodies.
Any information along these lines would be well recieved.\
Cheers Gordon
Pro
Joined: Jul 2002
Posts: 703
Likes: 0
From: Milwaukee Wi
go to winALDL site. Directions on how to make one. I bought mine a few years back from customefis.com. I would look at craigmoates website as well. His is USB. My cable was serial. I needed a serial/usb adapter.
Pro
Joined: Apr 2003
Posts: 552
Likes: 13
From: Oz
Pro
Joined: Apr 2008
Posts: 694
Likes: 1
From: Spokane WA
When grinding away the EGR channel, do you have to plug it off some how? What is the proper procedure for removing the EGR channel? I have seen pictures of it removed but what was done with the EGR, will it throw a code, or screw something else up?
When I look at the crossfire intake I have a tuff time seeing how the fuel gets properly distributed to the ports.
Who has removed the swirl veins? I think its time to open this can of worms and make a detailed approach step by step on porting and removing the EGR and swirl vein mods or removal.
When I look at the crossfire intake I have a tuff time seeing how the fuel gets properly distributed to the ports.
Who has removed the swirl veins? I think its time to open this can of worms and make a detailed approach step by step on porting and removing the EGR and swirl vein mods or removal.
Burning Brakes
Joined: Jan 2005
Posts: 847
Likes: 1
From: spring branch texas