Efi 434
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Postmaster
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From: Delaware
Efi 434
I have decided to rebuild my EFI 400 as an EFI 434. Tim Meyer is going to do a short block stroker. We will assemble it with my CHI-3V heads and EFI setup and attempt to Dyno it.
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Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Peak Torque is 556@4500 RPM, peak HP is 560 @6000 RPM. Live Dynos seem to do a little better.
I ran some iterations on cams, and found one with longer lobe seperation and more exhaust duration. It produces less overlap and better peak Torque & HP at the same RPM.
It also has a later IVC, so I need to increase the CR to keep the same DCR.
Now the figures are peak torque is 564 @4500 RPM and HP is 582@6000 RPM. Low RPM torque is still a respectable 424ft-lbs @ 2000 RPM. I may change cams.
I ran some iterations on cams, and found one with longer lobe seperation and more exhaust duration. It produces less overlap and better peak Torque & HP at the same RPM.
It also has a later IVC, so I need to increase the CR to keep the same DCR.
Now the figures are peak torque is 564 @4500 RPM and HP is 582@6000 RPM. Low RPM torque is still a respectable 424ft-lbs @ 2000 RPM. I may change cams.
Last edited by danlee; Sep 17, 2006 at 07:32 AM.
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