04-08-2011, 09:43 AM
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CC Member
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Join Date: Jun 2008
Location: Chester Springs,
PA
Cobra Make, Engine: Kirkham 289 FIA #690, FRPP 427 Boss engine
Posts: 764
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Not Ranked
It all depends on what you want to do with the car as was detailed quite nicely in the other thread. Will your weber set up work well with the Z cam in your crate engine? I had the 430hp version of that engine in my FFR coupe with stack EFI and it was amazing. The initial and mid-range acceleration was intense. Where it suffered was at upper rpms where the lack of a common plenum caused it to run out of air (so yes to that question). I think you will see the same issue once you sort out the tuning. Hopefully, Bob will chime in on this as he has an EFI stack set up and runs it at the track with great results.
Personally, I like a big displacement small block for any driving requiring great handling which is what I enjoy. My Kirkham FIA has a 540hp 427w.
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RCR GT40 SOLD to Fast 5
Kirkham #690 289 FIA
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