Hi Grant, great to know there are a few of us on here.
I have an 11cab C30 which I'm hoping to put the 261 in. I would be very greatfull of any info you have on installing this engine in the C15A as its the same cab style.
What are the differences between the Pontiac and USA large truck engines?
How do they perform on the road?
I can get my C30 wound up to 40mph on the flat which I'm happy with but any sniff of an incline and I'm down through the box, most hills round my way leave me in 2nd at about 5mph.
My dad used to have a C15A 12cab, he's on Maple Leaf Up - thanks for the link, I'll have a good nosey through.