Which would you choose?
Thread Starter
Racer
Joined: Aug 2016
Posts: 354
Likes: 54
Which would you choose?
LS2 application with 6 spd.
Replacing my engine, and since I am rebuilding will upgrade a bit. Here is the plan thus far:
- fully forged rotating assy
- coated pistons
- bronze bushed lifters
- shortblock is rated to 1000hp
- LS3 CNC heads
- LS3 intake with LS2 TB
- BTR custom cam (it will be close to a Stage 3 turbo cam)
- ID1000 injectors
- 10.7:1 SCR (factory 10.9:1)
- upgraded fuel pump
- staying with the current APS TT kit
- methanol injection
The shortblock comes in one of two sizes 393cid or 427cid (same price).
Either way, the HP will be similar, as I recognize the APS turbo kit (airflow) is the limiting factor. I have no plans to build it to 1000WHP in the future. It will likely stay at ~700-750WHP for the remainder.
Which size would you build, and why?
Replacing my engine, and since I am rebuilding will upgrade a bit. Here is the plan thus far:
- fully forged rotating assy
- coated pistons
- bronze bushed lifters
- shortblock is rated to 1000hp
- LS3 CNC heads
- LS3 intake with LS2 TB
- BTR custom cam (it will be close to a Stage 3 turbo cam)
- ID1000 injectors
- 10.7:1 SCR (factory 10.9:1)
- upgraded fuel pump
- staying with the current APS TT kit
- methanol injection
The shortblock comes in one of two sizes 393cid or 427cid (same price).
Either way, the HP will be similar, as I recognize the APS turbo kit (airflow) is the limiting factor. I have no plans to build it to 1000WHP in the future. It will likely stay at ~700-750WHP for the remainder.
Which size would you build, and why?
Melting Slicks
Joined: Jan 2001
Posts: 2,022
Likes: 194
From: palm harbor/murphy Fl/NC
C6 of Year Finalist (performance mods) 2019
St. Jude Donor '11, '14
I would ask the company that makes the turbo. They surely would be able to give you their been their done that answers. I am sure this has been done many times.
Good luck.
Good luck.
Thread Starter
Racer
Joined: Aug 2016
Posts: 354
Likes: 54
APS does not provide these kits in the market currently.
I thought that others would have an opinion on route to choose between 393 cid or 427 cid.
If they both provide similar HP and the costs are the same, it really wouldn't make much difference. However, I would expect the TQ to be greater with the 427 and the peak HP to come in at a higher RPM with the 393.
Cooling would likely be similar, as heat required to be dissipated is a function of work performed (HP). Fueling the 427 would be marginally higher at lower RPM due to the larger cubic inches (though really not a concern on this build).
I was really just hoping for some thoughtful feedback from the CF group....
I thought that others would have an opinion on route to choose between 393 cid or 427 cid.
If they both provide similar HP and the costs are the same, it really wouldn't make much difference. However, I would expect the TQ to be greater with the 427 and the peak HP to come in at a higher RPM with the 393.
Cooling would likely be similar, as heat required to be dissipated is a function of work performed (HP). Fueling the 427 would be marginally higher at lower RPM due to the larger cubic inches (though really not a concern on this build).
I was really just hoping for some thoughtful feedback from the CF group....
Last edited by KSA Aaron; Nov 11, 2016 at 04:37 AM.
