I swapped my 318 for a Magnum a year or so ago in my daily driver and included the A500OD trans.
This made the trans and converter bolt right up to the 5.9 with the correct balance only slightly egging one converter bolt hole.
The cam is a 214/224 duration with about .512 lift using the factory roller lifters and stock Magnum rocker gear.
The heads were replaced with EQ Magnum Iron heads drilled for LA intakes, 92cc closed chambers and 1.92 intake valves.
I'm only running an Edelbrock 600cfm and the 318/360 Edelbrock dual plane intake off the 318, and the 1 5/8 long tube headers with 2.5 inch duals with Flowmasters.
I paid right at $150 for the regrind cam from Oregon Cam Grinders, and Hughes 1110 springs with the higher lift retainers.
All the front is LA covers, water pump and Vbelt drive but a Carter electric pump.
I gained about 200hp and 8 miles to the gallon better on the hiway than the 318/904 combo.
Couldn't be happier with it.
(I didn't have a bunch of money to spend on it, and I have about 2,500-2,800 into the entire swap)
View attachment 1715085476
View attachment 1715085477
View attachment 1715085478
View attachment 1715085479