525sc Rebuild
#16
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iTrader: (3)
Only thing Id be wondering , is the use of the intercooler with this setup. The 177 is gonna be small for a hot 454 with good heads and cam. If i recall, on the engine mike tkach is talking about , those blowers were at 115% overdrive to make about 5lbs on my old engines and the ones hes built (my old blowers). They didnt have intercoolers.
I know when i added the intercoolers under my 420 blowers, i had to really increase the overdrive to get the boost back. The core is an airflow restriction. I am assuming you will have to go with a pretty small upper pulley, just to get to 5psi on that setup. Prob still better than not having an intercooler at all though on that setup.
Couple things Id consider. Making sure you have enough carb, so your not handicapping the blower. They dont like to have inlet restriction. The 177s are not teflon tipped, and i would make sure the blower is tight and fresh. If the rotor to case clearance is excessive, this will further exacerbate the issue.
Also, keep an eye on the rear bearings. The rear of those blowers use a crankcase, and known to get fuel diluted when the seals wear.
With that being said, i dont think 650hp will be too hard. Should be a nice running setup.
I know when i added the intercoolers under my 420 blowers, i had to really increase the overdrive to get the boost back. The core is an airflow restriction. I am assuming you will have to go with a pretty small upper pulley, just to get to 5psi on that setup. Prob still better than not having an intercooler at all though on that setup.
Couple things Id consider. Making sure you have enough carb, so your not handicapping the blower. They dont like to have inlet restriction. The 177s are not teflon tipped, and i would make sure the blower is tight and fresh. If the rotor to case clearance is excessive, this will further exacerbate the issue.
Also, keep an eye on the rear bearings. The rear of those blowers use a crankcase, and known to get fuel diluted when the seals wear.
With that being said, i dont think 650hp will be too hard. Should be a nice running setup.