Cross Fire Injection
Thread Starter
Racer
Joined: Jul 2007
Posts: 399
Likes: 0
From: ontario
Cross Fire Injection/Lowering an 80 C3
Anyone have thoughts on crossfire injection vettes...good, bad, easy to maintain or service...etc.
can a C3 be lowered..what needs to be done who can do it and how much could it cost?
can a C3 be lowered..what needs to be done who can do it and how much could it cost?
Last edited by 69rag; Aug 14, 2009 at 06:13 PM.
Race Director
Joined: Aug 2007
Posts: 11,889
Likes: 8
From: Whitefish Falls Ontario
St. Jude Donor '08-'09
I have an 84 crossfire, that I've had for a little over 2 1/2 years. About a year ago I had a problem with the TPS sensor and replaced it. since then the only problem I've had is keeping enough gas in it to satisfy my passion to drive it.. ( get anywhere from 24- 28 MPG depends on my lead foot) Car has 126k miles on it and still can scare my wife..
Racer
Joined: Jan 2005
Posts: 375
Likes: 0
From: Montreal Drive it like you test it !
My 1984 is 500,000 km. Never had problem with the crossfire. I drive 12 months a year. I it has always started even below -25 c.
On the engine side, I replaced connecting rod and main bearing, 2 lifters, timing chain and gear, damper, EGR valve, maf sensor, oil pump 3 times, and air filter xxx times :-)
Touching wood....
On the engine side, I replaced connecting rod and main bearing, 2 lifters, timing chain and gear, damper, EGR valve, maf sensor, oil pump 3 times, and air filter xxx times :-)
Touching wood....
Drifting
Joined: Oct 2004
Posts: 1,343
Likes: 10
From: Oakville ON "Real Corvettes have folding tops..."
Now my information is dated but here is what I used to do to lower a C3
Rear is simple. longer spring bolts, Check alignment as you lower this way on a C3 you will increase negative camber on the rear.
The fronts there are 2 ways both require removing the coils. One is cut coils ( I do not recommend this).
The second and best way I know is to buy the GM F-41 springs for a 65, 66 or 67. They fit and have a lower ride height. Current availability of these... I don't know.
If you go for coil cutting I have a set of front springs out of an L48 air car that have less than 30,000 miles on them.
Rear is simple. longer spring bolts, Check alignment as you lower this way on a C3 you will increase negative camber on the rear.
The fronts there are 2 ways both require removing the coils. One is cut coils ( I do not recommend this).
The second and best way I know is to buy the GM F-41 springs for a 65, 66 or 67. They fit and have a lower ride height. Current availability of these... I don't know.
If you go for coil cutting I have a set of front springs out of an L48 air car that have less than 30,000 miles on them.
Safety Car
Joined: Apr 2006
Posts: 4,057
Likes: 421
From: BC
Now my information is dated but here is what I used to do to lower a C3
Rear is simple. longer spring bolts, Check alignment as you lower this way on a C3 you will increase negative camber on the rear.
The fronts there are 2 ways both require removing the coils. One is cut coils ( I do not recommend this).
The second and best way I know is to buy the GM F-41 springs for a 65, 66 or 67. They fit and have a lower ride height. Current availability of these... I don't know.
If you go for coil cutting I have a set of front springs out of an L48 air car that have less than 30,000 miles on them.
Rear is simple. longer spring bolts, Check alignment as you lower this way on a C3 you will increase negative camber on the rear.
The fronts there are 2 ways both require removing the coils. One is cut coils ( I do not recommend this).
The second and best way I know is to buy the GM F-41 springs for a 65, 66 or 67. They fit and have a lower ride height. Current availability of these... I don't know.
If you go for coil cutting I have a set of front springs out of an L48 air car that have less than 30,000 miles on them.
You can get a longer rear bolt kit for adjustable ride height from Corvette Central for $39.99. It comes with 8" bolts, poly cushions, nuts, and washers, and is part #582059. Easy install! An hour max. I think I would try cutting the fronts. If you make a mistake or decide you don't like it, a new set is only 75 bucks. Stock front C3 springs are rated at 293 lbs. The F-41 C3 springs are rated at 550 lbs, as are the C2 springs, but the C2 springs could be shorter? Not sure... Don't forget the 4 wheel alignment!
Last edited by CanadaGrant; Aug 15, 2009 at 11:33 AM.
Thread Starter
Racer
Joined: Jul 2007
Posts: 399
Likes: 0
From: ontario
Now my information is dated but here is what I used to do to lower a C3
Rear is simple. longer spring bolts, Check alignment as you lower this way on a C3 you will increase negative camber on the rear.
The fronts there are 2 ways both require removing the coils. One is cut coils ( I do not recommend this).
The second and best way I know is to buy the GM F-41 springs for a 65, 66 or 67. They fit and have a lower ride height. Current availability of these... I don't know.
If you go for coil cutting I have a set of front springs out of an L48 air car that have less than 30,000 miles on them.
Rear is simple. longer spring bolts, Check alignment as you lower this way on a C3 you will increase negative camber on the rear.
The fronts there are 2 ways both require removing the coils. One is cut coils ( I do not recommend this).
The second and best way I know is to buy the GM F-41 springs for a 65, 66 or 67. They fit and have a lower ride height. Current availability of these... I don't know.
If you go for coil cutting I have a set of front springs out of an L48 air car that have less than 30,000 miles on them.
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The ORIGINAL and bestest
Joined: Oct 2000
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From: Toronto Ontario
Toronto Events Coordinator
At first when I lowered mine, I used Vette Brakes & Products 550 springs in the front and 8" bolts in the back. I was able to lower the car a little over an inch. I wanted to go lower, so I switched to 10" bolts in the back, and converted the front to a composite mono spring like the back, which gives me almost infinite adjustments. My car is now down over 2", and I could go lower if I wanted to, but I only have about 3" clearance at my header collectors right now, so thats as low as I will go!!
For reference:
For reference:
Drifting
Joined: Oct 2004
Posts: 1,343
Likes: 10
From: Oakville ON "Real Corvettes have folding tops..."
