Now that I have finally completed the 403 swap on my 1985 Toronado, I have an empty engine stand which will soon be fitted with a 3.0 sourced from a 1989 Eagle Premier. With the helpful information from Bill and Farrar and a little additional research, I have confirmed that the valve timing difference between the odd-fire 2.8 PRV and the even-fire 3.0 PRV is the result of the timing chain that runs the fuel pump side cylinder head. (For the sake of simplicity of left / right references between rear engine Delorean as opposed to front engine Eagle, I will simply refer to the sides of the engine in terms of distributor side and mechanical fuel pump side.) Specifically, the Eagle engine uses the same timing chain as every odd fire PRV for the distributor side cylinder head. In contrast, the Eagle uses an Eagle specific chain for the fuel pump side! The reference points on the gears and the cams are the same. Even the procedure for setting the timing chains is the same between the Eagle shop manual and the DeLorean shop manual, the difference comes down to the reference timing links on the Eagle's center timing chain which runs the cam on the fuel pump side of the engine.
With regard to spark, I have opted to borrow Bill and Farrar's use of a cut-down AMC 4.2 distributor with a timing gear grafted from a stock DeLorean distributor.
In regard to fuel, I'm planning to utilize a fuel delivery system that has been successfully used by Alpine A310 tuners which consists of a Peugeot / Renault Alpine manifold modified to accept a Holley 390 4bbl carb.
However, since the 2.8 and the 3.0 use different head gaskets, this begs the question of what head gaskets to use when mating the 2.8 heads to the 3.0 block???
Any insight would be greatly appreciated!
Andrew
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