Building an L98
Thread Starter
Race Director
Joined: Feb 2008
Posts: 19,691
Likes: 322
From: Alexandria VA
Building an L98
So trying to maximize hp from a 'stock" l98. Complete track car.
Looking to build an absolute indestructible bottom end in the 400chp mark. Like, invincible while giving more HP. Goal is ~10.7:1 CR w/ a .045 quench.
What crank/pistons/rods should i get?
Looking to build an absolute indestructible bottom end in the 400chp mark. Like, invincible while giving more HP. Goal is ~10.7:1 CR w/ a .045 quench.
What crank/pistons/rods should i get?
Racer
Joined: Feb 2024
Posts: 268
Likes: 113
From: New York
400 chp NA?
Scat 9000 crank
Scat 6" Pro Series rods w/7/16 rod bolts.
Mahle 4032 forged PowerPak pistons
w/1mm/1mm/2mm ring pack.
You could step up to a forged crank for a lot more money but not necessary for that power level.
You could also run a 6.125" rod using Mahle PowerPak pistons and a stock 3.48 stroke crank.
Your stock lower end has a 2 bolt main 638 block. Have it magnafluxed and use ARP main studs.
Any reason for not building a 383?
Scat 9000 crank
Scat 6" Pro Series rods w/7/16 rod bolts.
Mahle 4032 forged PowerPak pistons
w/1mm/1mm/2mm ring pack.
You could step up to a forged crank for a lot more money but not necessary for that power level.
You could also run a 6.125" rod using Mahle PowerPak pistons and a stock 3.48 stroke crank.
Your stock lower end has a 2 bolt main 638 block. Have it magnafluxed and use ARP main studs.
Any reason for not building a 383?
Last edited by C4industries; Jul 15, 2024 at 03:45 AM.
Thread Starter
Race Director
Joined: Feb 2008
Posts: 19,691
Likes: 322
From: Alexandria VA
400 chp NA?
Scat 9000 crank
Scat 6" Pro Series rods w/7/16 rod bolts.
Mahle 4032 forged PowerPak pistons
w/1mm/1mm/2mm ring pack.
You could step up to a forged crank for a lot more money but not necessary for that power level.
You could also run a 6.125" rod using Mahle PowerPak pistons and a stock 3.48 stroke crank.
Your stock lower end has a 2 bolt main 638 block. Have it magnafluxed and use ARP main studs.
Any reason for not building a 383?
Scat 9000 crank
Scat 6" Pro Series rods w/7/16 rod bolts.
Mahle 4032 forged PowerPak pistons
w/1mm/1mm/2mm ring pack.
You could step up to a forged crank for a lot more money but not necessary for that power level.
You could also run a 6.125" rod using Mahle PowerPak pistons and a stock 3.48 stroke crank.
Your stock lower end has a 2 bolt main 638 block. Have it magnafluxed and use ARP main studs.
Any reason for not building a 383?
Planned on splaying.
Series will charge me points for doing stroker.
Racer
Joined: Feb 2024
Posts: 268
Likes: 113
From: New York
One of the main reasons for choosing a 6" or a 6.125" rod (aside from rod ratio) is piston weight. The longer the rod, the lighter the piston because the piston is shorter. So your reciprocating weight is reduced which is better at high RPM. The thin ring pack is also lighter with less drag and better sealing/conformability. And the slipper skit design and the shorter pin further help reduce weight. I recommend calling Mahle and describing your application. You'll get a knowledgeable and helpful tech on the line straight away.
Mahle Motorsports PowerPak #
888-255-1942
Choose optio 6 (tech questions)
Mahle Motorsports PowerPak #
888-255-1942
Choose optio 6 (tech questions)
