............................ 
Erod ls3
Safety Car
Joined: Mar 2005
Posts: 4,472
Likes: 1,224
From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C4 of the Year Finalist- Modified
2020 C4 of the Year Finalist - Modified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
Thread Starter
Melting Slicks
Joined: Feb 2011
Posts: 2,322
Likes: 6
From: Los Altos CA
I'm keeping my schedule as open as possible these days so I can collect it on minimal notice.
My brother lives a few hundred miles from the shop & I was hoping to visit him after collecting the vette both 'cause I want to see my brother and as a test drive within towing distance. The mountain pass between them may make that impossible, though.
There are a couple of routes home so a snow free transit should be possible.
My brother lives a few hundred miles from the shop & I was hoping to visit him after collecting the vette both 'cause I want to see my brother and as a test drive within towing distance. The mountain pass between them may make that impossible, though.
There are a couple of routes home so a snow free transit should be possible.
Melting Slicks
Joined: Apr 2007
Posts: 2,616
Likes: 111
following this one........great thread for sure..........
I have my 85 in great shape and went through a whole engine rebulding/6 speed conversion/3.73 gear rebuld Dana thing several years ago...at the time 400 chp (2002/3) was good enough to keep you competitive......not so much anymore.....
but more importantly, getting these dinosaurs dyno tuned at a local shop is nearly impossible (around my neck of the woods anyway) but...
everyone and their brother has the software for the LS series mills/electronics.....that is a big incentive to convert to the later technology for me........I am hoping to see the computer/ECM/PCM/ or whatever engine management system you utilize as much as the performance gains.....that is just as big of a story for me....especially since these early c4's do not utilize the ECM for guage functions (speedo/tach, etc.) as much as the later c4's rely on....
I have my 85 in great shape and went through a whole engine rebulding/6 speed conversion/3.73 gear rebuld Dana thing several years ago...at the time 400 chp (2002/3) was good enough to keep you competitive......not so much anymore.....
but more importantly, getting these dinosaurs dyno tuned at a local shop is nearly impossible (around my neck of the woods anyway) but...
everyone and their brother has the software for the LS series mills/electronics.....that is a big incentive to convert to the later technology for me........I am hoping to see the computer/ECM/PCM/ or whatever engine management system you utilize as much as the performance gains.....that is just as big of a story for me....especially since these early c4's do not utilize the ECM for guage functions (speedo/tach, etc.) as much as the later c4's rely on....
Safety Car
Joined: Mar 2005
Posts: 4,472
Likes: 1,224
From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C4 of the Year Finalist- Modified
2020 C4 of the Year Finalist - Modified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
3D,
Any updates?
I'm wondering how your car is progressing.
Any updates?
I'm wondering how your car is progressing.
Pro
Joined: Oct 2011
Posts: 716
Likes: 0
I hve to say you have way more patience than I do. this has been a forever project, I understand it was going to take awhile but your poor car has been off the road for over a year now. Poor Baby.........
i can say for sure I would not be able to wait that long...
i can say for sure I would not be able to wait that long...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Racer
Joined: Sep 2006
Posts: 289
Likes: 0
From: Newark DE
Are they using the DD for the speedo, or other adapter? I just picked up a SGI-5 to drive both my ECMs with a speedo signal. The setup I thought was working (VSS -> LT1 ECM -> LS ECM) would stop reading after 60mph. I'm thinking it was on the bottom limit of attenuation trying to drive all the CCM, LS ECM, etc that after 60mph they were dropping pulses...
Thread Starter
Melting Slicks
Joined: Feb 2011
Posts: 2,322
Likes: 6
From: Los Altos CA
I believe it's one for the speedometer and a second for the tach.
He was looking for a place to put them in the dash but, last time we talked, had decided it would be better to have them accessable & was going to mount them in a box near/behind the brake booster.
He was looking for a place to put them in the dash but, last time we talked, had decided it would be better to have them accessable & was going to mount them in a box near/behind the brake booster.
.. What color will the intake be? 
Safety Car
Joined: Mar 2005
Posts: 4,472
Likes: 1,224
From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C4 of the Year Finalist- Modified
2020 C4 of the Year Finalist - Modified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
Thread Starter
Melting Slicks
Joined: Feb 2011
Posts: 2,322
Likes: 6
From: Los Altos CA
Not my place to say.
He has worked on several other EROD swaps while working on mine & is learning a lot about that package.
I think the exhaust/CAT fitment and CA compliance are the tough parts of this swap, complicated by starting with an '87---the radiator configuration and shock towers are in the way.
He has worked on several other EROD swaps while working on mine & is learning a lot about that package.
I think the exhaust/CAT fitment and CA compliance are the tough parts of this swap, complicated by starting with an '87---the radiator configuration and shock towers are in the way.
Thread Starter
Melting Slicks
Joined: Feb 2011
Posts: 2,322
Likes: 6
From: Los Altos CA
It's alive!!!!
Just got off the phone...
"fired right up"
There are some minor issues---exhaust leak due to wrong C5 manifold gasket, Dash not lighting up due to a ground wire (probably), wants to re-do the MAF location---but says it runs nicely, all the readings he checked were good.
He'll shoot some video when the exhaust leak is fixed.
WooHoo
Just got off the phone...
"fired right up"
There are some minor issues---exhaust leak due to wrong C5 manifold gasket, Dash not lighting up due to a ground wire (probably), wants to re-do the MAF location---but says it runs nicely, all the readings he checked were good.
He'll shoot some video when the exhaust leak is fixed.
WooHoo