Quote:
Originally Posted by BBC71Nova
One issue I'm having is what to do with the dampner mounted trigger wheel. I'm running the Frontrunner and I'd prefer not to space out the crank pulley and then everything else. ATI makes a dampner shell with crank trigger magnets installed that would solve the dimension issue. However, the issue there is 1. it is magnetic pickup, 2. lower resolution signal when compared to a 58x/60-2 hall effect setup. ATI said they have and can build a dampner with 60-2 style wheel but that it is a 120day custom order and cost like $800. A "not so sure it is possible", more drastic idea I had was to take a wheel and machine out the inner section to match the outer dimension of the crank pulley. Weld them together and machine it flat. Sort of a pulley/trigger wheel in one.
The other issue is lack of a good solution for providing a cam signal. EFI Connection has a modified OE 7.4l distributor that is popular it seems. Others are just cutting reluctor tabs off of their old MSD distributors making them 1x cam sync signals. Surely there is a more elegant solution to this cam sync. Others tell me no, there just isn't much market and I should just go LS like the rest of the world. I'm putting lipstick on a pig...
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http://www.chevroletperformance.com/Parts/catalog.jsp
Go to page 305 of latest Chevrolet Performance Parts catalog - Item H
H. 19260247
Big-Block Crank Trigger Ignition Conversion Kit
• Enables the use of the latest aftermarket electronic control systems
• 58X reluctor ring for installation on the front of the crankshaft
timing gear
• 4X camshaft gear
• New front cover with camshaft position and crankshaft
position sensors
• Double-row timing chain for greater durability, stability and timing
accuracy
• Requires aftermarket ignition controller capable of 58X signal
• Coil packs are not included
NOTE: Minor machining of the cylinder block and the damper is required.
Can run a big block off Performance Parts Crate Engine controller kit (E67) if you want - else have great 58x crank / 4x cam pickup assembly.
If run with Crate Engine Controller, can run individual coils rather than distributor.
Dave