Looking for advice on putting Tuned Port Injection on my 79 L82
08-15-2016, 05:51 PM
#21
Burning Brakes
Member Since: Jul 2009
Location: Ashland PA
Posts: 1,246
Received 91 Likes
on
79 Posts
2021 C4 of the Year - Modified Finalist
Priya, anything to report back; what did you end up doing?
I'm now mulling over many of these same ideas with my own 79 L82.
I thought I was going to go with an off-the-shelf modern TBI EFI system like the about-to-be-released Holley Sniper EFI, BUT port EFI with a modern designed-for-air intake system and the extra fuel economy AND torque is calling my name all of a sudden...
Adam
I'm now mulling over many of these same ideas with my own 79 L82.
I thought I was going to go with an off-the-shelf modern TBI EFI system like the about-to-be-released Holley Sniper EFI, BUT port EFI with a modern designed-for-air intake system and the extra fuel economy AND torque is calling my name all of a sudden...
Adam
https://www.firstfuelinjection.com/services.html
The following users liked this post:
NewbVetteGuy (08-18-2016)
08-15-2016, 06:40 PM
#22
Le Mans Master
Thread Starter
Member Since: Dec 2009
Location: Saskatoon Saskatchewan
Posts: 6,397
Received 640 Likes
on
463 Posts
Priya, anything to report back; what did you end up doing?
I'm now mulling over many of these same ideas with my own 79 L82.
I thought I was going to go with an off-the-shelf modern TBI EFI system like the about-to-be-released Holley Sniper EFI, BUT port EFI with a modern designed-for-air intake system and the extra fuel economy AND torque is calling my name all of a sudden...
Adam
I'm now mulling over many of these same ideas with my own 79 L82.
I thought I was going to go with an off-the-shelf modern TBI EFI system like the about-to-be-released Holley Sniper EFI, BUT port EFI with a modern designed-for-air intake system and the extra fuel economy AND torque is calling my name all of a sudden...
Adam
08-15-2016, 06:50 PM
#23
Team Owner
Pro Mechanic
OP, I think you're looking at the wrong motor. If you criteria are the most efficient 325-350hp motor, and 6000 RPM rev range, the TPI isn't it. The LT1 is more efficient and has a much broader rev range. Even better would be a 5.3 Gen III engine.
08-15-2016, 07:04 PM
#25
Le Mans Master
Thread Starter
Member Since: Dec 2009
Location: Saskatoon Saskatchewan
Posts: 6,397
Received 640 Likes
on
463 Posts
I'm patterning my build after this one. This Vortec/TPI motor produced good power up to about 6000 rpm
http://www.thirdgen.org/forums/after...-tpi-dyno.html
http://www.thirdgen.org/forums/after...-tpi-dyno.html
08-15-2016, 07:08 PM
#26
Team Owner
Pro Mechanic
I know next to nothing about the LT1. I would consider the LT1 intake but I thought it wasn't compatible with the Vortech or early style SBC heads. What does it take to convert it to one of those?
What is the horsepower rating and at what RPM?
What is the rpm range where it produces best power?
What kind of distributor would it need and would that be compatible with my L82?
What is the horsepower rating and at what RPM?
What is the rpm range where it produces best power?
What kind of distributor would it need and would that be compatible with my L82?
*300 HP at 5000 RPM, Rev limiter @5850
*See this graph HERE Starts at about 2000 RPM.
*It uses the "optispark" distributor and not sure what you mean by compatible since your removing the L82 entirely.
08-15-2016, 07:10 PM
#27
Team Owner
Pro Mechanic
08-15-2016, 10:41 PM
#28
Instructor
This sounds like a pretty cool project! I have always admired the look of the tuned port's runners... Almost spider like!
I'm currently in the middle of a restoration involving a 1975 C3 Stingray that includes a conversion to a fuel injected LT1 (G2) engine. It's a LOT of work and we have already been thru two LT1 parts cars to gather up the parts. Looks like we might even have to pick up a C4 parts mule with the LT1 for all the brackets and such to make it look authentic.
Keep up the good work!
I'm currently in the middle of a restoration involving a 1975 C3 Stingray that includes a conversion to a fuel injected LT1 (G2) engine. It's a LOT of work and we have already been thru two LT1 parts cars to gather up the parts. Looks like we might even have to pick up a C4 parts mule with the LT1 for all the brackets and such to make it look authentic.
Keep up the good work!
The following users liked this post:
Priya (08-15-2016)
08-18-2016, 12:05 AM
#29
Melting Slicks
If money were no object, I'd go for this: https://www.firstfuelinjection.com/services.html
*DROOL*
I'm guessing that there's no way in @#$#@ this will fit under a mid-rise C3 hood...
Adam
*DROOL*
I'm guessing that there's no way in @#$#@ this will fit under a mid-rise C3 hood...
Adam
08-18-2016, 12:07 AM
#30
Melting Slicks
*Complete engine, harness and ECM
*300 HP at 5000 RPM, Rev limiter @5850
*See this graph HERE Starts at about 2000 RPM.
*It uses the "optispark" distributor and not sure what you mean by compatible since your removing the L82 entirely.
*300 HP at 5000 RPM, Rev limiter @5850
*See this graph HERE Starts at about 2000 RPM.
*It uses the "optispark" distributor and not sure what you mean by compatible since your removing the L82 entirely.
There's a place that will convert one for you, but it just doesn't seem worth it especially given Priya's fuel economy goals. The stock TPI or slightly hacked TPI manifold would focus on fuel economy improving low to mid end torque more, right?
Adam
08-18-2016, 05:41 AM
#31
Burning Brakes
Member Since: Jul 2009
Location: Ashland PA
Posts: 1,246
Received 91 Likes
on
79 Posts
2021 C4 of the Year - Modified Finalist
If money were no object, I'd go for this: https://www.firstfuelinjection.com/services.html
*DROOL*
I'm guessing that there's no way in @#$#@ this will fit under a mid-rise C3 hood...
Adam
*DROOL*
I'm guessing that there's no way in @#$#@ this will fit under a mid-rise C3 hood...
Adam
08-18-2016, 10:37 AM
#33
Melting Slicks
depending on your budget you could look at this.
https://www.firstfuelinjection.com/services.html
https://www.firstfuelinjection.com/services.html
No idea if it could possibly fit under a C3 mid-rise hood, though.
Adam
08-18-2016, 10:38 AM
#34
Melting Slicks
Update: I found the link! http://noel.prodigitalsoftware.com/NCtpi.html
My problem is that "first" is about the worst search term, EVER; these guys should've named it something else to make it searchable...
Adam
Last edited by NewbVetteGuy; 08-18-2016 at 04:55 PM.
08-18-2016, 11:32 AM
#35
Team Owner
Pro Mechanic
Maybe in theory, but the LT1 typically gets better gas mileage than a TPI. Doesn't matter; sounds like the OP already bought his intake parts.
08-18-2016, 12:31 PM
#38
Team Owner
Pro Mechanic
08-19-2016, 01:02 PM
#39
Le Mans Master
Member Since: Oct 2002
Location: Las Vegas - Just stop perpetuating myths please.
Posts: 7,098
Received 373 Likes
on
356 Posts
Just thought I'd add my 2 cents here. That's a whole lotta mods all at once for any one trying it their first time. My advice is to just install one mod at a time then get the car running stable. Try the intake swap first or maybe just the ECM before really opening the motor up. You may find all your mistakes - and we make mistakes - can stack up against you.
Good luck Pyria and congrats on choosing a unique build. I think it will be peaky but fun to drive.
Good luck Pyria and congrats on choosing a unique build. I think it will be peaky but fun to drive.
The following users liked this post:
Priya (08-19-2016)
08-19-2016, 01:38 PM
#40
Priya, anything to report back; what did you end up doing?
I'm now mulling over many of these same ideas with my own 79 L82.
I thought I was going to go with an off-the-shelf modern TBI EFI system like the about-to-be-released Holley Sniper EFI, BUT port EFI with a modern designed-for-air intake system and the extra fuel economy AND torque is calling my name all of a sudden...
Adam
I'm now mulling over many of these same ideas with my own 79 L82.
I thought I was going to go with an off-the-shelf modern TBI EFI system like the about-to-be-released Holley Sniper EFI, BUT port EFI with a modern designed-for-air intake system and the extra fuel economy AND torque is calling my name all of a sudden...
Adam
I by the way can probably help you with any FAST fuel injection questions.