CAMARO6 - View Single Post - Help with procharger pulley size and question on lowside

Daniel20162ss · 10-08-2018, 06:26 PM

Ok guys, getting ready to drop the motor back down in my car after the build and have a few unansered questions. Ill start with the mod list of whats done.

Engine:
Carrillo forged piston/rod combo(drops to 10.5/1 compression
Pray Stage 2 blower cam-0* lockout and supporting items
Katech ported heads
1-7/8 kooks headers to offroad pipes
D1sc procharger/stage 2 a2a/red race valve
High flow lt4 injectors/hpfp
I do also have a zl1 intank(not installed yet), along with a smg low side pump.
Snow performance stage 2 progressive meth/water dual #5(375ml) nozzles

Trans:
Hurst short throw
Light weight flywheel
Stage 3 dual disc clutch

Suspension:
Bmr springs
Dss axles

First question is whether I really need to drop the tank to do the zl1 pump since I am installing the smg low side aux pump. I dont want to unless I need to, but will.

Second question is what pulley I need for my setup. Before the internals and on stock compression I was running the 4.5” pulley making right at 10lbs at 6400rpm. Keep in mind, heads are now cnc ported and pistons dropped compression ratio.

Im looking to take the lt4 equipment just under max on 93oct, have a tune for that and just using the meth for cooling/off, and then another strip tune using the meth for added fuel with more timing etc.

Last but not least, i bought a .060 fuel lash cap to run on my 32% lobe and lt4 hpfp. Everything Ive read says this is what I want to do and not to use the .080 you would with lt1 hpfp or it will over stroke it, but verifying this would make me feel good.

10-08-2018, 06:26 PM	#1
Daniel20162ss Drives: 2016 2ss Join Date: Jan 2017 Location: Dayton Ohio Posts: 118	Help with procharger pulley size and question on lowside Ok guys, getting ready to drop the motor back down in my car after the build and have a few unansered questions. Ill start with the mod list of whats done. Engine: Carrillo forged piston/rod combo(drops to 10.5/1 compression Pray Stage 2 blower cam-0* lockout and supporting items Katech ported heads 1-7/8 kooks headers to offroad pipes D1sc procharger/stage 2 a2a/red race valve High flow lt4 injectors/hpfp I do also have a zl1 intank(not installed yet), along with a smg low side pump. Snow performance stage 2 progressive meth/water dual #5(375ml) nozzles Trans: Hurst short throw Light weight flywheel Stage 3 dual disc clutch Suspension: Bmr springs Dss axles First question is whether I really need to drop the tank to do the zl1 pump since I am installing the smg low side aux pump. I dont want to unless I need to, but will. Second question is what pulley I need for my setup. Before the internals and on stock compression I was running the 4.5” pulley making right at 10lbs at 6400rpm. Keep in mind, heads are now cnc ported and pistons dropped compression ratio. Im looking to take the lt4 equipment just under max on 93oct, have a tune for that and just using the meth for cooling/off, and then another strip tune using the meth for added fuel with more timing etc. Last but not least, i bought a .060 fuel lash cap to run on my 32% lobe and lt4 hpfp. Everything Ive read says this is what I want to do and not to use the .080 you would with lt1 hpfp or it will over stroke it, but verifying this would make me feel good.