Here is the result. It degreed in at 105° dot to dot. Their sheet said if it’s an option to prefer 1° more advance then 1° less... so I used the 2° advance key way and closed it up. It’s stock bore and I used an NOS .020 steel shim on assembly. I did the exhaust manifold mod and die-ground the outlet open to an honest 2.25” to match the head pipe. I made a head pipe out of some mandrel bends down to just past the torsion bar crossmember. Then there is a Thrush welded (FM40 knock-off) that then has a 2.5” 12” long shorty cherry bomb welded directly to its outlet. I then welded a stick of 3” over the cherry bomb outlet that extends to just in front of the axle with a turndown. It sounds “ok”... honestly I was expecting a bit more rumpy idle from a whiplash but I guess the slants just don’t produce enough wind (in stock longblock form) and the manifold (not headers) isn’t helping either. It’s not fast but it’s stronger then it was and sound better at idle. Good enough that the intake makes sense. Hope this review might help someone choose (or not choose) a Whiplash for their slant.
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