84 cross fire
Instructor
Joined: Jan 2006
Posts: 248
Likes: 14
From: Mesa
yep just watch out for those evo's and sti's though.
I was cruisin an 84 for a while never really had a problem with any rice.
I try to go to the pavs as much as possible but its hard to get off work though. let me know if you head out there anytime
I was cruisin an 84 for a while never really had a problem with any rice.
I try to go to the pavs as much as possible but its hard to get off work though. let me know if you head out there anytime
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Paul Ruggeri
OK, here are the magazine numbers. March 83, Road and Track; 84 Vette auto,3.31-1 gears=15.5@88.0mph. Dec. 84, Car and Driver; 85 Vette auto,3.07-1 gears=14.1@95.0mph. Is this a significant performance increase? Could an equally prepped 84 run circles around an 85? Only in someone's dreams. There will always be certain cars that run above their pay grade, but the average 84 is no match for the average 85, case closed.
Paul
Paul
Originally Posted by Paul Ruggeri
You have to have a real sense of humor to write stuff like that! There are completely stock TPIs that are faster than your car. You have to have a real sense of humor to write stuff like that!RACE ON!!!
Former Vendor
Joined: Nov 2006
Posts: 2,482
Likes: 3
From: Carmichael ca
Those test numbers for stock Corvettes prove nothing. I never said (there you go again) that a stock Crossfire was faster than than a stock TPI. It was YOU that said:You'd have to take a nap and a half for a 13.80 car to loose to a 14.10 car. What kind of case gets closed when you make a statement on one point and present proof for a totally different point? You have to have a real sense of humor to write stuff like that!
RACE ON!!!
You have to have a real sense of humor to write stuff like that!RACE ON!!!
Look, I don't want to get into a silly argument. The bottom line is TPI is a big improvement over CFI. That's a simple fact and all I'm saying. If people are happy with their CFIs, great
I own 3 Corvettes, I work on Corvettes for a living. I don't have a problem with any year Corvette......................... Can't we all just get along?
Come on CFI-EFI, have a sense of humor, we're on the same side.
Paul
Last edited by Paul Ruggeri; Nov 9, 2007 at 12:36 PM.
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Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by crazy247
those R&T times are kinda bad IMO it says the standard is a 15.6 and mine is 24 years old and 180xxx Klm and im no means a good driver but i can get my at 14.7 with a horrible reaction time
RACE ON!!!
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
I've had exceptional good luck with mine with only 65k(silver) on it. Even my second one with 219k (red) is a daily driver. The red is fully stock with no engine modifications and from what I understand has had no major work done to it.
I think you'll be happy with the 84.
I think you'll be happy with the 84.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Paul Ruggeri
I'm not sure where you got the napping story or the 13.8-14.1 business, that wasn't from me.
Originally Posted by Paul Ruggeri
There are completely stock TPIs that are faster than your car.
Originally Posted by Paul Ruggeri
OK, here are the magazine numbers... Dec. 84, Car and Driver; 85 Vette auto,3.07-1 gears=14.1@95.0mph.
Now you know where "the 13.8-14.1 business" came from. You provided the 14.1 and I provided the 13.8. Therefore, your own numbers help disprove your statement of:
Originally Posted by Paul Ruggeri
There are completely stock TPIs that are faster than your car.
Thank you for the details on the "in car" head porting. I don't think I care to bend over the car for that long, nor to take the risk of wayward grindings getting into my engine. Besides, as I said, I don't think this tired old dog is really worth the effort.
RACE ON!!!
Former Vendor
Joined: Nov 2006
Posts: 2,482
Likes: 3
From: Carmichael ca
The "napping" was a word I introduced to emphasize a point. I'll leave it out. Here is my previous post in clearer, hopefully easier to understand language. You said:To back up and justify that statement you posted the TPI ET.There, you have established the new, stock, 1985 TPI was good for a 14.1 ET. My Crossfire runs 13.80s.
Now you know where "the 13.8-14.1 business" came from. You provided the 14.1 and I provided the 13.8. Therefore, your own numbers help disprove your statement of:Also, since I have learned to never say never, I don't want to be accused of saying that there isn't SOME TPI somewhere that isn't faster than my Crossfire. I, personally, haven't run across the numbers and certainly not the car. As a rule, my car out runs stock and mildly modified TPIs on a regular basis. My car has never been beaten by a TPI that was close to stock.
Thank you for the details on the "in car" head porting. I don't think I care to bend over the car for that long, nor to take the risk of wayward grindings getting into my engine. Besides, as I said, I don't think this tired old dog is really worth the effort.
RACE ON!!!
Now you know where "the 13.8-14.1 business" came from. You provided the 14.1 and I provided the 13.8. Therefore, your own numbers help disprove your statement of:Also, since I have learned to never say never, I don't want to be accused of saying that there isn't SOME TPI somewhere that isn't faster than my Crossfire. I, personally, haven't run across the numbers and certainly not the car. As a rule, my car out runs stock and mildly modified TPIs on a regular basis. My car has never been beaten by a TPI that was close to stock.
Thank you for the details on the "in car" head porting. I don't think I care to bend over the car for that long, nor to take the risk of wayward grindings getting into my engine. Besides, as I said, I don't think this tired old dog is really worth the effort.
RACE ON!!!
I agree that porting your heads on the car is a lot of work. I wouldn't do unless you're going to pull the manifold anyway and don't want to buy better heads. At the time, the 80s, this was a good solution.
Paul
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Hey bhepp, since you live in Phoenix we can meet up at the Pavilions this staurday if you like and meet some other CF owners and join our little group and talk about your CF motor more. We'll look for you anyway.
This CFI vs TPI discussion is getting rather boring and is pointless...
This CFI vs TPI discussion is getting rather boring and is pointless...
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Paul Ruggeri
OK, I see what you're saying about the times. I'm sure I've seen post by stock TPI owners with faster times. Maybe my memory is faulty.
Originally Posted by Paul Ruggeri
My main point is, all things being equal a TPI is faster than a Crossfire. I don't think that's debatable.
Originally Posted by Paul Ruggeri
I agree that porting your heads on the car is a lot of work. I wouldn't do unless you're going to pull the manifold anyway and don't want to buy better heads. At the time, the 80s, this was a good solution.
Paul
Paul
Originally Posted by Buccaneer
This CFI vs TPI discussion is getting rather boring and is pointless...
RACE ON!!!
Le Mans Master
Joined: Sep 2000
Posts: 6,303
Likes: 714
From: Bartlett IL
... With the Crossfire, one is virtually forced to "do it yourself", for little expense, but significant gains. A home rodded Crossfire will run circles around a similarly rodded (for similar cost) TPI.
To convert a Crossfire to a TPI for an increase in performance would be a huge waste of time and money. To convert a Crossfire to a TPI just so it can receive typical TPI up grades would be too. Now converting it directly to a Mini Ram or a Super Ram, or whatever is a different story.
RACE ON!!!
To convert a Crossfire to a TPI for an increase in performance would be a huge waste of time and money. To convert a Crossfire to a TPI just so it can receive typical TPI up grades would be too. Now converting it directly to a Mini Ram or a Super Ram, or whatever is a different story.
RACE ON!!!
IMO Xfire was intentionally held back so the TPI "looked" more powerful. Doesn't take much to get a Xfire to run with a TPI motor.If I hadn't bought a ZR-1, the MR was going to be the next upgrade for my 84 Xfire. As it was, it trapped at 104.5mph with a Xfire manifold.
The motor is a SBC. So it responds to the same mods any SBC does.
Go visit 3rdGen.org to see what people have done with TBI motors.
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
I'll be going up there this afternoon/tonight and hang out for a few hours, I'll look for you.
As for... The sputum that you post is hilarious and good entertainment about your CF, but still boring and pointless, just give it up already.
This is just my opinion and I'm sure yours will vary.
As for...
The sputum that you post is hilarious and good entertainment about your CF, but still boring and pointless, just give it up already. This is just my opinion and I'm sure yours will vary.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Buccaneer
As for... The sputum that you post is hilarious and good entertainment about your CF, but still boring and pointless, just give it up already. This is just my opinion and I'm sure yours will vary.
The sputum that you post is hilarious and good entertainment about your CF, but still boring and pointless, just give it up already. This is just my opinion and I'm sure yours will vary.RACE ON!!!