I have had success by removing only the front hinge/hood bolt on each side. This allows the hood to "open" further while leaving it 'mostly' in place.
This may help:
225 Engine Specs
WIDTH
Outside Valve Cover to Prod. Exhaust Manifolds 17.3"
LENGTH
Bellhousing Face to:
- Front of Block 27.7"
- Center Line of Fan Belt 28.0"
- Front of Fan 32.3"
HEIGHT
Bottom of Pan to:
- Top of Prod. Air Cleaner 29.6"
- Top of Carb. 26.5"
- Top of Valve Cover 23.8"
Pan Rail to:
Top of Valve Cover 19.7"
