Let's Build Another Turbo Engine!
All the parts I'm using are parts that nobody wanted and sold to me cheap. Now I'm using their old crap and gapping them on the street with a 6 speed. Everything about this setup should make it slow, but I take a lot of pride in it! Now I'm just trying to keep my car faster than theirs and if I can continue to beat them with their junk, I will lol.
Thread Starter
Teching In
Joined: May 2019
Posts: 34
Likes: 5
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
Water/meth can help with detonation threshold in the cylinder, but it isn't anywhere near as effective as cooling that mass of air as a good intercooler.
Thread Starter
Teching In
Joined: May 2019
Posts: 34
Likes: 5
So lets see where this puts us.
Crank: Stock
Rods: Stock
Pistons: Forged
Wrist pins: Stock
Block: Aluminum, Bore .020 to .030 to clean up cylinders (assuming everything is good and it can be used)
Heads: my decked 317's
Cam: my BTR Stage 2 Turbo cam
Turbo: my Billet 8475
Intercooler: Yes
Nitrous: No
Fuel: Ignite 114
Gameplan: To pour in as much boost as I need to run 8's.
Anything I should change?
*Speak now or forever hold your piece*
One more question:
I have been using a stock f body oil pan, should I consider something else?
Crank: Stock
Rods: Stock
Pistons: Forged
Wrist pins: Stock
Block: Aluminum, Bore .020 to .030 to clean up cylinders (assuming everything is good and it can be used)
Heads: my decked 317's
Cam: my BTR Stage 2 Turbo cam
Turbo: my Billet 8475
Intercooler: Yes
Nitrous: No
Fuel: Ignite 114
Gameplan: To pour in as much boost as I need to run 8's.
Anything I should change?
*Speak now or forever hold your piece*
One more question:
I have been using a stock f body oil pan, should I consider something else?
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
Stock F body pan sucks lol.
They are notorious for causing low oil pressure on a hard launch.
Just last week I was at the track with the corvette. Launching at 3000 RPM and just 2 PSI, cutting a 1.55 60 foot, the car would shut off from the oil pressure safety kicking on. Less than 30 PSI of oil pressure at 6000 RPM was killing it. Great oil pressure through 2nd and 3rd gear no matter the RPM.
Had to slow down the launch, 2800 RPM and 1 PSI, pulling 10 degrees on launch and tapering it back on over 3 seconds. Managed a 1.67 60 foot and a 10.61 @ 132 on wastegate only boost (9 PSI) in my cam-only 4.8 (which is the new IRS Dana 36 record btw). Any harder of a launch and the car would shut off. Hoping to go 9.99 with a hard launch on gate-only before I turn it up.
Which means I have to either.
1. Swap out the F body pan for something better.
2. Get a good baffle kit for it.
3. Accusump the car.
Adding
They are notorious for causing low oil pressure on a hard launch.
Just last week I was at the track with the corvette. Launching at 3000 RPM and just 2 PSI, cutting a 1.55 60 foot, the car would shut off from the oil pressure safety kicking on. Less than 30 PSI of oil pressure at 6000 RPM was killing it. Great oil pressure through 2nd and 3rd gear no matter the RPM.
Had to slow down the launch, 2800 RPM and 1 PSI, pulling 10 degrees on launch and tapering it back on over 3 seconds. Managed a 1.67 60 foot and a 10.61 @ 132 on wastegate only boost (9 PSI) in my cam-only 4.8 (which is the new IRS Dana 36 record btw). Any harder of a launch and the car would shut off. Hoping to go 9.99 with a hard launch on gate-only before I turn it up.
Which means I have to either.
1. Swap out the F body pan for something better.
2. Get a good baffle kit for it.
3. Accusump the car.
Adding
TECH Fanatic
Joined: Feb 2015
Posts: 1,080
Likes: 178
Stock F body pan sucks lol.
They are notorious for causing low oil pressure on a hard launch.
Just last week I was at the track with the corvette. Launching at 3000 RPM and just 2 PSI, cutting a 1.55 60 foot, the car would shut off from the oil pressure safety kicking on. Less than 30 PSI of oil pressure at 6000 RPM was killing it. Great oil pressure through 2nd and 3rd gear no matter the RPM.
Had to slow down the launch, 2800 RPM and 1 PSI, pulling 10 degrees on launch and tapering it back on over 3 seconds. Managed a 1.67 60 foot and a 10.61 @ 132 on wastegate only boost (9 PSI) in my cam-only 4.8 (which is the new IRS Dana 36 record btw). Any harder of a launch and the car would shut off. Hoping to go 9.99 with a hard launch on gate-only before I turn it up.
Which means I have to either.
1. Swap out the F body pan for something better.
2. Get a good baffle kit for it.
3. Accusump the car.
Adding
They are notorious for causing low oil pressure on a hard launch.
Just last week I was at the track with the corvette. Launching at 3000 RPM and just 2 PSI, cutting a 1.55 60 foot, the car would shut off from the oil pressure safety kicking on. Less than 30 PSI of oil pressure at 6000 RPM was killing it. Great oil pressure through 2nd and 3rd gear no matter the RPM.
Had to slow down the launch, 2800 RPM and 1 PSI, pulling 10 degrees on launch and tapering it back on over 3 seconds. Managed a 1.67 60 foot and a 10.61 @ 132 on wastegate only boost (9 PSI) in my cam-only 4.8 (which is the new IRS Dana 36 record btw). Any harder of a launch and the car would shut off. Hoping to go 9.99 with a hard launch on gate-only before I turn it up.
Which means I have to either.
1. Swap out the F body pan for something better.
2. Get a good baffle kit for it.
3. Accusump the car.
Adding
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
LS1Tech Sponsor
Joined: Jan 2008
Posts: 2,233
Likes: 1,523
From: Ohio, Georgia, Nevada, Texas
Just so people know, the Press fit .945 pin versions have Spiralocks and Grooves for folks that need to hone the small end to get them to clean up.
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
We're big fans of the Improved Racing baffles. Well thought out. If you're backing away from the spray, end-gaps can be drawn back into the .021-.024 range. Also, going with a Gen. 4 rod, you're getting the bigger diameter .9433 pin. Standard material is more than enough due to the extra diameter over a .927. The SUM-326943785-7F is our .005 over piston and the SUM-326943810-7F is the .020. How the part numbers work is 326 is for the 1.326 compression height, 943 is the pin diameter, 785 is the bore size, 7 is the volume, F is for floating. If it were the Press fit version, there would be a P at the end.
Just so people know, the Press fit .945 pin versions have Spiralocks and Grooves for folks that need to hone the small end to get them to clean up.
Just so people know, the Press fit .945 pin versions have Spiralocks and Grooves for folks that need to hone the small end to get them to clean up.
I've seen the summit pistons. Very nice pieces. I'm still constantly weighing the decision to either go ahead and do a half-fill on the L33 block with summit rods/pistons or run it as-is with gen 4 stuff. My power goals keep bouncing around, but they're all above 4 digits since I'm knocking on that now with stock gen 3 stuff.
I run the improved racing baffle. Still saw a little drop on the launch. I don't log it, but def dropped 10-20psi w 6.5 qts and picks back up. I run 2qts overfull and it's fine. Also FWIW I believe Zbrown ran the Fbody pan forever without the baffle and 8qts. ( Back then I believe it was a mid 8 sec car with low 8 sec MPH ) Most don't overfill enough. The oil level drops a TON with the engine running. You can literally run 8qts in a stock Fbody pan if your turbo drain is high enough. I've heard horror stories about windage and this robbing tons of power. In practice it made no difference.
Try 8qts if your drains are high enough joe... I disconnected my drain and filled the engine till it started to overflow. (while running) Happened around 8.5 qts I believe....
https://ls1tech.com/forums/forced-in...-too-much.html
Try 8qts if your drains are high enough joe... I disconnected my drain and filled the engine till it started to overflow. (while running) Happened around 8.5 qts I believe....
https://ls1tech.com/forums/forced-in...-too-much.html
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
I run the improved racing baffle. Still saw a little drop on the launch. I don't log it, but def dropped 10-20psi w 6.5 qts and picks back up. I run 2qts overfull and it's fine. Also FWIW I believe Zbrown ran the Fbody pan forever without the baffle and 8qts. ( Back then I believe it was a mid 8 sec car with low 8 sec MPH ) Most don't overfill enough. The oil level drops a TON with the engine running. You can literally run 8qts in a stock Fbody pan if your turbo drain is high enough. I've heard horror stories about windage and this robbing tons of power. In practice it made no difference.
Try 8qts if your drains are high enough joe... I disconnected my drain and filled the engine till it started to overflow. (while running) Happened around 8.5 qts I believe....
https://ls1tech.com/forums/forced-in...-too-much.html
Try 8qts if your drains are high enough joe... I disconnected my drain and filled the engine till it started to overflow. (while running) Happened around 8.5 qts I believe....
https://ls1tech.com/forums/forced-in...-too-much.html
I'm running 6.5 - 7 quarts. Will another another quart or two next time out. It didnt lose oil pressure on the hit, but I'll instead at the top of first every time.
He also ran some roll pins in the push rods to help limit oil flow to the top end. Factory LS stuff tends to over oil the valve train, pump too much out of the pan for drag applications with central sumps.
I always thought an oil accumulator might be the best answer. They add oil capacity to the system and would prevent any momentary starvation on the launch. Cheaper and easier to mess with than installing an aftermarket pan as well. Always meant to do it... haven't had the time. I run the DOD pump on my 4.8. DOD spring with 2 links cut. Holds 55+ hot at idle with 30wt oil. 75-80 WOT.
I always thought an oil accumulator might be the best answer. They add oil capacity to the system and would prevent any momentary starvation on the launch. Cheaper and easier to mess with than installing an aftermarket pan as well. Always meant to do it... haven't had the time. I run the DOD pump on my 4.8. DOD spring with 2 links cut. Holds 55+ hot at idle with 30wt oil. 75-80 WOT.
Last edited by Forcefed86; Oct 31, 2019 at 07:54 AM.
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
I've had great luck with an Accusump, and they aren't terribly priced. I may pick one up just in case because the car goes fast in more than straight lines.
Other than that, the IR baffle and 7.5 quarts should be more than enough for a good launch with an F-body pan.
Other than that, the IR baffle and 7.5 quarts should be more than enough for a good launch with an F-body pan.
TECH Fanatic
Joined: Jan 2010
Posts: 1,074
Likes: 17
From: sarasota fl
I've never understood the "I want to run as little boost as possible" ideology. You aren't doing yourself any favors. Keep it simple, pour on the boost.
Make sure that you have a good fuel pressure regulator with a boost reference and that you are able to keep intercooler piping sealed up.
A higher static compression ratio will put more stress on the engine than a higher peak boost will in most circumstances,
and you're spending extra money and going through extra precautions to do it with almost no benefits over more peak boost.
Make sure that you have a good fuel pressure regulator with a boost reference and that you are able to keep intercooler piping sealed up.
A higher static compression ratio will put more stress on the engine than a higher peak boost will in most circumstances,
and you're spending extra money and going through extra precautions to do it with almost no benefits over more peak boost.
Boy if these arent words to live by.......