Building a supercharged engine
Thread Starter
Racer
Joined: Nov 2015
Posts: 379
Likes: 103
Building a supercharged engine
Hi,
I have a -86 C4 with automatic. I now have a supercharged L98 engine wich I now rebuild (I blow a piston) but I will sell it later. I´m dyno tested that and it gives over 400hp.
I´m starting to build a new supercharged engine. it’s going to be a long project, I’m not in a hurry.
First I have to decide which block is right where to start.
What kind of blocks have you used in supercharged if the target is about 700-800 hp?
I will use a Procharger P600B or D1 supercharger and meth/water injection.
What you think about those blocks? How much power do they last?
https://www.summitracing.com/parts/nal-10105123
or
https://www.summitracing.com/parts/drt-31161111l
or should i think of some other block?
What heads have you used?
AFR might be a one solutions...
Intake system?
Which engine management have you used?
Thanks,
I have a -86 C4 with automatic. I now have a supercharged L98 engine wich I now rebuild (I blow a piston) but I will sell it later. I´m dyno tested that and it gives over 400hp.
I´m starting to build a new supercharged engine. it’s going to be a long project, I’m not in a hurry.
First I have to decide which block is right where to start.
What kind of blocks have you used in supercharged if the target is about 700-800 hp?
I will use a Procharger P600B or D1 supercharger and meth/water injection.
What you think about those blocks? How much power do they last?
https://www.summitracing.com/parts/nal-10105123
or
https://www.summitracing.com/parts/drt-31161111l
or should i think of some other block?
What heads have you used?
AFR might be a one solutions...
Intake system?
Which engine management have you used?
Thanks,
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
The Dart SHP is a good base to start from. You would never hurt it at that power level and have plenty of head room to grow. The GM block is just a stock block.... it could live at that power but it wouldn't take a big miss on the tuneup to hurt it bad and possibly other parts go because of the block.
For cylinder heads talk with Chad Speier. He has the best 23 degree SBC heads as far as power potential and reliability....
http://speierracingheads.com/index.html
Intake.... I'd use a big single plane for EFI like the RHS, Profiler/Wilson or Motown.
ECM.... Holley Dominator. HP will work great at that power too.
Will
For cylinder heads talk with Chad Speier. He has the best 23 degree SBC heads as far as power potential and reliability....
http://speierracingheads.com/index.html
Intake.... I'd use a big single plane for EFI like the RHS, Profiler/Wilson or Motown.
ECM.... Holley Dominator. HP will work great at that power too.
Will
Last edited by rklessdriver; Nov 9, 2020 at 08:00 PM.
Thread Starter
Racer
Joined: Nov 2015
Posts: 379
Likes: 103
I have read good things to Dart, which could get a sustainable, efficient street car built. I think about it.
I also thought of building 383 of it so I wouldn’t have to use so much boost pressure to reach my goal
Nice heads, I need to think about those too. Very Pro heads!
I thought that AFR 195 Eliminator would be sufficient, but still need to examine further.
Perhaps a traditional a big single plate intake with modern Bosch EV14 nozzles could be a good solution. With that solution, the boost would be evenly distributed in each cylinder.
But of course I'm still wondering if Super Ram or Mini Ram or some other suction kit solution would come into play.
The Comp cams and Lunati have at least camshafts suitable for a supercharger.
What you think about the crankshafts, SCAT Series 9000 or F-43 lightweight or Pro Series superlight....
For the engine management system, I have think about Megasquirt. I have a few guys who could help with tuning.
Then the other functions of the car still work normally.
I also thought of building 383 of it so I wouldn’t have to use so much boost pressure to reach my goal
For cylinder heads talk with Chad Speier. He has the best 23 degree SBC heads as far as power potential and reliability....
http://speierracingheads.com/index.html
http://speierracingheads.com/index.html
I thought that AFR 195 Eliminator would be sufficient, but still need to examine further.
Perhaps a traditional a big single plate intake with modern Bosch EV14 nozzles could be a good solution. With that solution, the boost would be evenly distributed in each cylinder.
But of course I'm still wondering if Super Ram or Mini Ram or some other suction kit solution would come into play.
The Comp cams and Lunati have at least camshafts suitable for a supercharger.
What you think about the crankshafts, SCAT Series 9000 or F-43 lightweight or Pro Series superlight....
For the engine management system, I have think about Megasquirt. I have a few guys who could help with tuning.
Then the other functions of the car still work normally.
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
I am tuning my own supercharged L98 engine with Dynamic EFI's EBL. Currently maxed injectors and some other things. Too many dang projects.
Last edited by KyleF; Nov 10, 2020 at 04:52 PM.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
I have read good things to Dart, which could get a sustainable, efficient street car built. I think about it.
I also thought of building 383 of it so I wouldn’t have to use so much boost pressure to reach my goal
Nice heads, I need to think about those too. Very Pro heads!
I thought that AFR 195 Eliminator would be sufficient, but still need to examine further.
Perhaps a traditional a big single plate intake with modern Bosch EV14 nozzles could be a good solution. With that solution, the boost would be evenly distributed in each cylinder.
But of course I'm still wondering if Super Ram or Mini Ram or some other suction kit solution would come into play.
The Comp cams and Lunati have at least camshafts suitable for a supercharger.
What you think about the crankshafts, SCAT Series 9000 or F-43 lightweight or Pro Series superlight....
For the engine management system, I have think about Megasquirt. I have a few guys who could help with tuning.
Then the other functions of the car still work normally.
I also thought of building 383 of it so I wouldn’t have to use so much boost pressure to reach my goal
Nice heads, I need to think about those too. Very Pro heads!
I thought that AFR 195 Eliminator would be sufficient, but still need to examine further.
Perhaps a traditional a big single plate intake with modern Bosch EV14 nozzles could be a good solution. With that solution, the boost would be evenly distributed in each cylinder.
But of course I'm still wondering if Super Ram or Mini Ram or some other suction kit solution would come into play.
The Comp cams and Lunati have at least camshafts suitable for a supercharger.
What you think about the crankshafts, SCAT Series 9000 or F-43 lightweight or Pro Series superlight....
For the engine management system, I have think about Megasquirt. I have a few guys who could help with tuning.
Then the other functions of the car still work normally.
https://www.molnartechnologies.com/d...-crank-shafts/
Camshaft. Talk with Mike Jones at Jones Cam Designs.
http://jonescams.com/
The thing with a Dart block is that you are not constrained to a 4.0x bore anymore. With a common 3.75 stroke you can build a 400 or 406 easily in the Dart block.... making your power goal that much easier. 3.75 stroke and a 5.7 or 5.850 rod gives you a great compression height piston.... even a 6.0 rod is 1.125 CH which is plenty strong (I spray 400+ in my personal car with that CH piston). Why build small, as it costs nothing extra to build big. I just helped a guy with a 406 Dart build earlier this year that made 940RWHP with a Procharger F1A-94 on low boost. Brodix T1 225 heads.... this is a C4 Vette with a 4L80E and D44 IRS.
Miniram would also work fine.
There's nothing wrong with AFR but 210s at a minimum on a 383 or bigger engine and there is so much better heads out there for not much more.
Will
Last edited by rklessdriver; Nov 11, 2020 at 12:49 PM.
Thread Starter
Racer
Joined: Nov 2015
Posts: 379
Likes: 103
-350 stock bottom
-113# stock heads
-1.6" rockers
-260XFI H13 cam ( https://www.summitracing.com/parts/cca-k12-365-4 )
-Hedman headers with 2.5" exhaust x - pipe
-33lb EV14 Bosch 4 nozzles
-ported intake, SLP runners and plenium
-P600B with D1SC impeller
-TIAL blow off
-Reinstalled ventilation system
-PLX wideband
-Fuel pressure gauge
-Boost gauge
-Aguamist HFS-3 methanol/water injection with 1 x 1.0mm nozzle, using 50/50%
-Colder plugs
-Aeromotive performance fuel pump
Thread Starter
Racer
Joined: Nov 2015
Posts: 379
Likes: 103
Stay away from all of those cranks for supercharged engines. The 9000 is cast and lightweight cranks won't live long. The standard weight 4340 Scat would be the minimum crank I would use in your application. A step up would be a Molnar Technologies.
https://www.molnartechnologies.com/d...-crank-shafts/
Camshaft. Talk with Mike Jones at Jones Cam Designs.
http://jonescams.com/
The thing with a Dart block is that you are not constrained to a 4.0x bore anymore. With a common 3.75 stroke you can build a 400 or 406 easily in the Dart block.... making your power goal that much easier. 3.75 stroke and a 5.7 or 5.850 rod gives you a great compression height piston.... even a 6.0 rod is 1.125 CH which is plenty strong (I spray 400+ in my personal car with that CH piston). Why build small, as it costs nothing extra to build big. I just helped a guy with a 406 Dart build earlier this year that made 940RWHP with a Procharger F1A-94 on low boost. Brodix T1 225 heads.... this is a C4 Vette with a 4L80E and D44 IRS.
Miniram would also work fine.
There's nothing wrong with AFR but 210s at a minimum on a 383 or bigger engine and there is so much better heads out there for not much more.
Will
https://www.molnartechnologies.com/d...-crank-shafts/
Camshaft. Talk with Mike Jones at Jones Cam Designs.
http://jonescams.com/
The thing with a Dart block is that you are not constrained to a 4.0x bore anymore. With a common 3.75 stroke you can build a 400 or 406 easily in the Dart block.... making your power goal that much easier. 3.75 stroke and a 5.7 or 5.850 rod gives you a great compression height piston.... even a 6.0 rod is 1.125 CH which is plenty strong (I spray 400+ in my personal car with that CH piston). Why build small, as it costs nothing extra to build big. I just helped a guy with a 406 Dart build earlier this year that made 940RWHP with a Procharger F1A-94 on low boost. Brodix T1 225 heads.... this is a C4 Vette with a 4L80E and D44 IRS.
Miniram would also work fine.
There's nothing wrong with AFR but 210s at a minimum on a 383 or bigger engine and there is so much better heads out there for not much more.
Will
I'm still only building a powerful street cars.
Will getting idle small enough become too difficult if I increase the size of the engine to over 383 and with heads larger than 210cc?
I also need to get the exhaust gases HC and CO to stay low enough due to emissions.
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Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Okey, Thanks a lot for the post, now I'm starting to get a little idea of what kind of engine I'm starting to pile up.
I'm still only building a powerful street cars.
Will getting idle small enough become too difficult if I increase the size of the engine to over 383 and with heads larger than 210cc?
I also need to get the exhaust gases HC and CO to stay low enough due to emissions.
I'm still only building a powerful street cars.
Will getting idle small enough become too difficult if I increase the size of the engine to over 383 and with heads larger than 210cc?
I also need to get the exhaust gases HC and CO to stay low enough due to emissions.
Will
Thread Starter
Racer
Joined: Nov 2015
Posts: 379
Likes: 103
But I want to build the engine myself, as long as I first figure out what parts of the engine I will build.
Now I am rebuilding my old L98 engine from which I blow the piston...
