500efi or 525 efi whippled- which is better?

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01-14-2004 | 06:05 PM

Buddy OO

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From: st. louis,mo.

500efi or 525 efi whippled- which is better?

want to repower and get reliable 650-750 hp which engine will work better. how do whipples work on each. how many hours can i get out of these?

01-14-2004 | 09:27 PM

mcollinstn

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From: tn

525 has better rods.
The rest is primarily in the fuel system and camming.

01-15-2004 | 01:25 PM

futz991

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Either way you have a very sound base for Whipples. Both are excellent motors, with all the best pieces in them.

01-15-2004 | 03:29 PM

ursus

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the 525 also has edelbrock aluminium heads

01-15-2004 | 04:08 PM

Breathe Later

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From: McHenry, IL

The alum heads make the 525 an excellent candidate-less worries about detonation= more potential boost.
HP500 EFI is probably the best bet cost wise though. I'm not sure of the $$ difference, but I'll bet it's substantial. There's a ton of these engines running with Whipples too. The Whippled HP 500 EFI makes close to 800 ponies. Either way, the Whipple is AWESOME.

Regards,

Mark S.