84 cross fire
11-10-2007, 08:57 PM
#41
Former Vendor
Hey I've got an idea! Maybe I can find a cheap, high milage 85. Mod it the same way as CFI-EFI's 84 and we could do an episode of Pinks
Would my wife divorce me if I bought another Vette? Maybe its worth the risk
Paul
11-10-2007, 11:34 PM
#42
Le Mans Master
As cheaply as you can buy these....(duck!)..... right now would be the time to try this out.
of course, I'm a poor boy with four kids....but I'll watch and jeer.
of course, I'm a poor boy with four kids....but I'll watch and jeer.
11-11-2007, 12:00 AM
#43
Pro
Member Since: Oct 2006
Location: Oxford Pa
Posts: 503
Likes: 0
Received 0 Likes
on
0 Posts
well, don't get drawn into the discussion of how much your Crossfire sux.
basically it is a nice powerful Chevy V8 that runs pretty good in stock form.
I'd like reiterate my list as these are the things you are going to need to address if you are driving the car that much.
basically it is a nice powerful Chevy V8 that runs pretty good in stock form.
I'd like reiterate my list as these are the things you are going to need to address if you are driving the car that much.
Mine is just fine for me, fast enough for tickets. I have had a some issues, but it's an 84 and it's old. I know people with newer c4's that have issues too.
Bought a Factory Service Manual, learned how to adjust the TBI's it running fine. but it is a vette and they all have some issues.
Enjoy your vette
Last edited by Sprint7677; 11-11-2007 at 12:04 AM.
11-11-2007, 04:28 AM
#44
Burning Brakes
My 84 ran 15.5@88 dead stock. W/the cold air mod and K&N it went 15.4@89. 1.6 roller tips dropped it to 14.7@92 or 93. Fully porting the intake , including grinding off the EGR "hump" netted 14.3@96 best. That's w/127K miles
Crossfires even make magazines and money sometimes! Semifinals at the Nationals in Richmond.
Crossfires even make magazines and money sometimes! Semifinals at the Nationals in Richmond.
11-11-2007, 01:05 PM
#45
Melting Slicks
YAWN...
Is it really that hard for you to figure this out? Your CF posts are "hilarious and good entertainment" on your claims...but "boring and pointless" because we have to see the same thing over and over and over again from you, give it a rest.Eric, you and I know that for what you did until the 383 swap is very typical of a CF car with the money spent, which is still respectable for a CF motor with 127K. BTW: How are you coming on 383 anyway, haven't heard from you in a while.
However...Some of US with less mods on a stock motor are running 13s on a 165K+ CF motor. I guess there is only one person in this world that has the ultimate secret for going fast in a stock CF, because nobody else is doing it.
11-11-2007, 02:07 PM
#46
Race Director
Member Since: Sep 2000
Location: The Top of Utah
Posts: 17,298
Likes: 0
Received 23 Likes
on
22 Posts
Originally Posted by Buccaneer
However...Some of US with less mods on a stock motor are running 13s on a 165K+ CF motor. I guess there is only one person in this world that has the ultimate secret for going fast in a stock CF, because nobody else is doing it.
RACE ON!!!
11-11-2007, 05:38 PM
#47
Drifting
Member Since: Feb 2004
Location: Santa Maria CA
Posts: 1,277
Likes: 0
Received 0 Likes
on
0 Posts
Stock TPIs are not a lot better than the Crossfire. It is great sport for the masses to pooh pooh the lowly Crossfire, but the TPI guys would be in the same boat, or worse, if it weren't for the shear numbers of TPI production. The salvation of the TPI is big mouth intake manifolds, over sized runners, and special plenums. For $1000.00 to $1500.00 the TPI manifold can be up graded significantly, and the car turned into a performer. There is no such option for the low production Crossfire (thank goodness). The TPI is difficult to make a lot better, at home. The after market allows you to start over... at great expense. 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!!!
11-11-2007, 08:00 PM
#48
Drifting
My stock 84 crossfire has 171,000 miles. It's best time is 15.19 driven by a rank amateur and street tires. When the transmission finally died, I had it rebuilt with a shift kit and stall converter. I'm sure with a little pratice and a pair of drag radials, the car will run in the high 14's.
Now that my summer project is complete, I can dedicate the necessary time and port the intake base I picked up from a forum member and possibly pickup another tenth of so.
Now that my summer project is complete, I can dedicate the necessary time and port the intake base I picked up from a forum member and possibly pickup another tenth of so.
Last edited by Brimis; 11-11-2007 at 08:23 PM.
11-11-2007, 09:18 PM
#49
Le Mans Master
Here's a stock block 350 with a Xfire manifold and standard mods of headers/cam/heads running with an LT-4 12 years newer.
I won that race BTW.
I won that race BTW.
Last edited by Dominic Sorresso; 11-11-2007 at 09:22 PM.
11-11-2007, 09:19 PM
#50
Race Director
Member Since: Sep 2000
Location: The Top of Utah
Posts: 17,298
Likes: 0
Received 23 Likes
on
22 Posts
TENTH!!! Do it right and you can get 6 to 7 tenths, like I did. With some attention paid to detail and some judicious trial and error, test and tune, there is no reason my results can't be duplicated or exceeded.
RACE ON!!!
RACE ON!!!
11-11-2007, 09:28 PM
#51
Drifting
Member Since: Feb 2004
Location: Santa Maria CA
Posts: 1,277
Likes: 0
Received 0 Likes
on
0 Posts
I didn't get quite as much gain but my porting was about .4 tenths drop in ET and 4mph gain. Well worth the time/effort and all in the end its stock appearing.
11-11-2007, 09:49 PM
#54
Race Director
Member Since: Sep 2000
Location: The Top of Utah
Posts: 17,298
Likes: 0
Received 23 Likes
on
22 Posts
I think the biggest difference between my results and that of some others, is the time and effort I put into porting my manifold. I have a 3 pound coffee can full of aluminum grindings from my porting and I didn't remove my EGR channel. Most ported Crossfire manifolds don't allow 6000 RPM shifts to be productive.
RACE ON!!!
RACE ON!!!
11-12-2007, 02:15 AM
#56
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
on
2,602 Posts
St. Jude Donor '05
I dont see what all the henpecking is about..Point is, or at least it seems the Crossfire can be made to run much harder with nothing more than some time and a few tools rather than spending $1000+ on a whole new intake. So what if theres something faster, for chrissakes, these are stoneage technology cars-There better be faster out there!
11-13-2007, 02:41 PM
#57
Team Owner
Pro Mechanic
Originally Posted by Bucaneer
:I guess there is only one person in this world that has the ultimate secret for going fast in a stock CF, because nobody else is doing it.
1. There are (reletively) few around when compared to TPI cars
2. Even fewer people who have the motivation to properly or fully optimize them.
That makes it easy for folks to cite good TPI examples and bad mouth CFI's.
CFI EFI is the only person I know who has FULLY ported a CFI intake...and I mean FULLY. Even I didn't go as far as he did and I went much further than most do. If I didn't live near him and see his intake myself I might not believe his claims (I probably would though, based on my own results).
BTW, my old car would run 13.25 @105 through a ported by me CFI intake. SO CFI isn't the "only one" who's had good results.
