Originally Posted by Blueabyss (Post 4822531)

Has anyone done a 500 efi or 525 efi clone with the 3.8 Whipple?
Chris

Originally Posted by F-2 Speedy (Post 4822534)

bensini231 on here just had a pair of 525's 3.8 Whip's built

Originally Posted by getrdunn (Post 4822536)

I didn’t look up but what was the outcome? Sounds like fun.

Originally Posted by Blueabyss (Post 4822531)

Has anyone done a 500 efi or 525 efi clone with the 3.8 Whipple?
Chris

Originally Posted by bencini231 (Post 4822160)

The 3.8's are super efficient and some may be disapponted when they wind them up, because they are so quiet. You really can't hear them at all like the ones before, which is a good thing because they aren't producing a lot of heat. My 525 efi's whith the 3.8's dyno'd 830 hp @ 7.8 lbs of boost and can go to 11lbs if wanted. Only downfall for me is my factory cooling on the 525's is really good for up to 900 hp, so i'll never fully use all the boost I have. This is just a reference for the 3.8 whipple question.

Originally Posted by Blueabyss (Post 4822561)

Were they clones or did they come from Merc?
Chris

Originally Posted by bencini231 (Post 4822625)

Mine were the factory 525 EFI's that were tired and needed refreshing. So we decided to give them a little more power when I found out the new 3.8's had been released. My compression is 8:1 on these engines and they are so efficient we are using a 3 3/4 pulley and getting 7.8lbs boost.

Originally Posted by ICDEDPPL (Post 4822456)

I`m thinking lower the compression to 7.5:1 and keep the boost and blower speed up at 10psi vs. 8.3:1 and 8psi .
Thoughts?