Solution to the tired Crossfire system
Thread Starter
Heel & Toe
Joined: Feb 2010
Posts: 24
Likes: 0
Solution to the tired Crossfire system
After soul searching over what to do with my very underpowered 82, change is coming. Within the next month it'll have headers, a performance camshaft, and tuned-port injection. This is being done by Fuel Injection Specialties in San Antonio TX. When it's done, it will have something it never had before...CAJONES!!! They'll be doing a Dyno test on it upon completion. I'll report back with the horsepower at the rear wheels numbers.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,117
From: Crossville TN
Without new [better breathing] heads, it will make more power...but not a BIG jump in horsepower. It will certainly get much better mileage and run smoother, idle smoother, and start easier. Sounds like a nice setup.
Instructor
Joined: Aug 2010
Posts: 149
Likes: 0
From: Atlantic Beach FL
Have them dyno it before the improvements, so you can see the difference on paper. Sometimes it is hard to remember the feel before, so you can't tell the before and after difference.
Enjoy the improvements.
Enjoy the improvements.
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
i dont see that much gain from what you are having done .get it dynoed ,so that you can see exactly what gains you have made .i dont think you can gain over 30 hp.the new intake for the cross-fire will get you 20 hp .any new cam should be a improvment.replace the heads and cam .get the new intake, replace your cat .you will get more for your money .if you want a new fuel injection,the f.a.s.t unit would be better than the cross-fire or tpi.this is all my opinon. its your car do what you are happy with.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
i dont see that much gain from what you are having done .get it dynoed ,so that you can see exactly what gains you have made .i dont think you can gain over 30 hp.the new intake for the cross-fire will get you 20 hp .any new cam should be a improvment.replace the heads and cam .get the new intake, replace your cat .you will get more for your money .if you want a new fuel injection,the f.a.s.t unit would be better than the cross-fire or tpi.this is all my opinon. its your car do what you are happy with.
Melting Slicks
Joined: Aug 2001
Posts: 2,043
Likes: 1
From: Elkhorn WI
After soul searching over what to do with my very underpowered 82, change is coming. Within the next month it'll have headers, a performance camshaft, and tuned-port injection. This is being done by Fuel Injection Specialties in San Antonio TX. When it's done, it will have something it never had before...CAJONES!!! They'll be doing a Dyno test on it upon completion. I'll report back with the horsepower at the rear wheels numbers.
- exhaust breathing (headers, catless or high-flo cats, mufflers)
- heads (swap in some better ones)
- cam (match the heads, rear gears and the desired intake system)
- then the upgrades will do something....with the above done, the intake of fuel is the issue, so TPI is good bottom end, but nowadays there are improvements to those systems. If you already have the C4 TPI, that's ok. Replace the runners with High-Flo. The intake can be swapped for a better one. The Throttle body can be upgraded to better as well as the injectors. If they are getting you the TPI, your paying good money for a system that is kind of aged.
If you want more power, there are better ways than TPI. If you just want reliability, a great looking intake system, the TPI will be fine and look cool, but not too much more power, as it's not the main reason your "seat of the pants feel" isn't that good.
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Le Mans Master
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
If you're looking for decent power on a budget, maybe consider an LT-1 from a later model C-4, as believe these will drop right in. Had one in a mid 90's Z-28 Camaro and was a real mover. Don't think 350 hp's to far off with a little tweeking and header's.
