Engine Durability with S/C

[ShelbyGT350]

To those owners with Whipple or KB superchargers (Phase 1 - 750HP), at that power level, and moderate boost (not more than about 8 psi), are you concerned at all with the durability of the engine with cast aluminum pistons and powdered metal/sinter forged connecting rods as opposed to fully forged pistons and connecting rods such as on Ford's Aluminator SC engines, and if so, to what extent? Likewise on durability of the transmission, differential and rear suspension and brakes? Eventually I do want to add a power adder, but not blow-up my engine or drivetrain the process. I am not a drag racer, but periodically participate in HPDE's. Thanks.

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[jhatley7]

To those owners with Whipple or KB superchargers (Phase 1 - 750HP), at that power level, and moderate boost (not more than about 8 psi), are you concerned at all with the durability of the engine with cast aluminum pistons and powdered metal/sinter forged connecting rods as opposed to fully forged pistons and connecting rods such as on Ford's Aluminator SC engines, and if so, to what extent? Likewise on durability of the transmission, differential and rear suspension and brakes? Eventually I do want to add a power adder, but not blow-up my engine or drivetrain the process. I am not a drag racer, but periodically participate in HPDE's. Thanks.

Is this for a gt or 350? Auto or standard? I damaged my motor last weekend pushing 18psi to 8K on e85. If you only plan to push 8psi, I would not worry about damaging the motor one bit. With good 93 the limit looks to be around 12psi before you get into the danger zone.

If you do decide to build I would go straight to a Sleeved block. As i'm sure you have already read, you will need good tires, half shafts, clutch (if MT) to safely push 750+ hard.

 

[Boduke0220]

Making 650 on my street tune and 700-720 on my e85 tune. Not too worried. These little motors can take a beating if you keep the tune good and don't flog it. Plenty of them living at upper 700s to low 800s. I've had mine on for 8k miles no issues!

 

[Phoenix]

8psi on a blower is about 600whp. You're fine if you have 91 or 93

I do suggest the oil pump gear and cam gears.

 

[MadCow]

To those owners with Whipple or KB superchargers (Phase 1 - 750HP), at that power level, and moderate boost (not more than about 8 psi), are you concerned at all with the durability of the engine with cast aluminum pistons and powdered metal/sinter forged connecting rods as opposed to fully forged pistons and connecting rods such as on Ford's Aluminator SC engines, and if so, to what extent? Likewise on durability of the transmission, differential and rear suspension and brakes? Eventually I do want to add a power adder, but not blow-up my engine or drivetrain the process. I am not a drag racer, but periodically participate in HPDE's. Thanks.

The durability of everything will be less. By how much, who knows, but be ready. As for the engine there are lots of threads. To sum it up, do oil pump gear and crank gear. The rods and pistons are as strong as the stock sleeves. If not doing sleeves just leave the motor stock.

 

[Boduke0220]

I will say the engine will outlast the drivetrain if you have sticky tires lol

 

[nicktechla]

the durability of your rear tires will be less for sure

 

[beefcake]

we feel pretty good about 650 on pump and 750 on e85 on these cars. they seem to be holding up well.

that said, there is always a chance of something dropping off when you are nearly doubling the factory output of an engine

 

[jvandy50]

OP, we talkin voodoo or coyote here?

 

[venumous]

I should be at 700whp on pump with the MAK inlet if it ever ships... not too worried, maybe I should be lol.

 

[whatsup62]

I will say the engine will outlast the drivetrain if you have sticky tires lol

Yeah.... 3 clutches and 3 transmissions later...I would say that's very accurate..:cheers:

 

[venumous]

Yeah.... 3 clutches and 3 transmissions later...I would say that's very accurate..:cheers:

I have to say man your experience has led me away from even attempting to run the RXT that is sitting in my garage. I'm going to put that baby up for sale and pick up the RST or something similar. I've got the motor out of my Terminator now and am building it so I probably will never drag the S550 at this point.

 

[Boduke0220]

Yeah.... 3 clutches and 3 transmissions later...I would say that's very accurate..:cheers:

Geeez lol I'm hoping an RST, carbon driveshaft and g force axles will save me from too many head aches!

 

[whatsup62]

Geeez lol I'm hoping an RST, carbon driveshaft and g force axles will save me from too many head aches!

Those two should do it.

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