C3 Tpi????
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Depends on what your car is, and how you drive it....
just a PT weekender....everyday driver....and if so, what kind of distances and speeds....
for instance my stock '72 got 12-14 mpg with the L48 Muncie 336 rear....lousey in my book....so on went a TPI and it doubled the MPG with no other changes....
but it damn rarely ever saw 80 mph and if so, for maybe 30 seconds....
traffic, and cops in the DC area of Maryland....so cruise was about 60 on the freeways....
around town it was 2nd to 4th....due to the TPI torque....
down here in Florida....do an overdrive of some sort...cruise if easy 75 sometimes PLUS, depending on flow of traffic....
It an easy cheep swap IF you are used to wiring....if not....you maybe have troubles...
just a PT weekender....everyday driver....and if so, what kind of distances and speeds....
for instance my stock '72 got 12-14 mpg with the L48 Muncie 336 rear....lousey in my book....so on went a TPI and it doubled the MPG with no other changes....
but it damn rarely ever saw 80 mph and if so, for maybe 30 seconds....
traffic, and cops in the DC area of Maryland....so cruise was about 60 on the freeways....
around town it was 2nd to 4th....due to the TPI torque....
down here in Florida....do an overdrive of some sort...cruise if easy 75 sometimes PLUS, depending on flow of traffic....
It an easy cheep swap IF you are used to wiring....if not....you maybe have troubles...
Burning Brakes
Joined: Nov 2005
Posts: 1,143
Likes: 0
From: Leander Texas
It is easier than you might think. If you chose to do the swap be sure to try to get the complete system from your friend. There is alot of info to be had here. Do a search of the tech section for TPI. Ask questions, and some one will answer. Everyone here was a great help when I did my swap. It took me about a full weekend to complete once I hadn aquired all the parts, and fabricated a few things. Here is the link to the thread I posted.
http://forums.corvetteforum.com/show...&highlight=TPI
And this site was a huge help!!!
http://www.chevythunder.com/
Please feel free ask questions. I can only pay the help the other members here had given me forward.
http://forums.corvetteforum.com/show...&highlight=TPI
And this site was a huge help!!!
http://www.chevythunder.com/
Please feel free ask questions. I can only pay the help the other members here had given me forward.
Thread Starter
Pro
Joined: Jun 2003
Posts: 618
Likes: 0
From: Kingston Springs Tn
I am really leaning that way. I just like the looks under the hood as much as anything......wiring is not a big issue with me, i will try anything once, twice if I like it!....
Thanks
Thanks
Burning Brakes
Joined: Sep 2006
Posts: 1,071
Likes: 86
From: Rotonda FL
You can find a really informative guide to TPI engine swaps at jagsthatrun.com. It will take you through all of the questions and the little details that you frequently don't consider until you get stuck.
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
Here's a good thread...that's on the front page of Tech right now: http://forums.corvetteforum.com/show....php?t=1580191
As for any other questions about TPI: http://forums.corvetteforum.com/show....php?t=1603168
As for any other questions about TPI: http://forums.corvetteforum.com/show....php?t=1603168
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Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
I don't think GM made a port injection system for big blocks. I'm pretty sure there are some aftermarket manifolds available, but they're expensive and would require a custom computer chip.
Burning Brakes
Joined: Sep 2006
Posts: 1,071
Likes: 86
From: Rotonda FL
I suggest that you look on the Street & Performance website (hotrodlane.cc). They have a variety of fuel injection intake manifolds that will allow variations of TPI to be fitted to both small and big blocks.
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
www.lt1intake.com
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
I recently looked into all kinds of FI systems, but deemed the tpi not adequate for a high hp unit (read better breathing engine). If you really want to equip an engine like that with FI there are not many options, certainly not if you have heads with a suitable magnitude runner in it. The only system I could probably work with was a victor jr manifold- based efi system, but on this system plenum is to small to really make good use of the hp potential a fi system has to offer. I would have opted for an ITB system, but apparently there are not to many around that will suit my needs or they are overly expenive. Finally i decided to stick with a carb and a little less hp.
Good luck
Good luck
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Carbs will make as much or more hp than an efi system; the benefits of efi are better all around driveability, easier cold weathers starts and better gas mileage although using a wideband to tune a carb can bridge that gap.
Instructor
Joined: Oct 2006
Posts: 219
Likes: 0
From: Jupiter FL
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
Look at the power ratings of the modern Corvettes - more power from less displacement than all but the all-out race motors like the L88.
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
You'd be choking a 383 with a TPI setup. Get an LT1 manifold modified to run a conventional distributor, you can run it on the same computer as a TPI.
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
Drifting
Joined: Jan 2004
Posts: 1,991
Likes: 3
From: Piscataway NJ