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Originally Posted by scottsumrall
(Post 2245117)
Griff, also what is the weak link on the 525sc?
I don't think there really is one. Just some specific preventive maintanence that needs to be done. People have said the supercharger needs to be gone through every 300 hrs. Mine never was, but I changed the lube every 25-30hrs. The cam is not real big, so valve train issues are about the same a black engine. My 525sc also used half the oil that my now 250hr 502mpi's use. Lots of people have had problems with the factory Gil exhaust manifolds cracking. |
so is upgrading to an 8:71 the only way to get another 100hp?
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You could also go with a Merc 420, or 671. Many times you can find good deals on 420's and have them freshened at The Blower Shop. That will get you an extra 100hp, EASY.
Darrell. |
Originally Posted by Griff
(Post 2245376)
I don't think there really is one. Just some specific preventive maintanence that needs to be done. People have said the supercharger needs to be gone through every 300 hrs. Mine never was, but I changed the lube every 25-30hrs. The cam is not real big, so valve train issues are about the same a black engine. My 525sc also used half the oil that my now 250hr 502mpi's use.
Lots of people have had problems with the factory Gil exhaust manifolds cracking. |
Originally Posted by motoman450
(Post 2245413)
so is upgrading to an 8:71 the only way to get another 100hp?
IMO, he would be better off selling what he has and starting new with a 540. |
Originally Posted by Griff
(Post 2245575)
Its going to be hard to get 675 hp out of any 454ci even with a bigger supercharger. You would need new heads also.
IMO, he would be better off selling what he has and starting new with a 540. |
Originally Posted by DRIPPINWETII
(Post 2245596)
There is a guy here on Champlain that has trip 525sc's in a fountain that is getting 650hp. 9lbs of boost,no intercoolers!!
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Originally Posted by DRIPPINWETII
(Post 2245596)
There is a guy here on Champlain that has trip 525sc's in a fountain that is getting 650hp. 9lbs of boost,no intercoolers!!
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Originally Posted by Old Navy
(Post 2242832)
I did all the typical mods to my 525sc and gained a few MPH. I think I am going to put in a roller cam and be done with it. I believe the 177 blower and bravo drive are close their limits now and hope the cam will not break things. I am building a spare drive:D
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Originally Posted by Back4More
(Post 2246075)
With the 177's?
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