Gary Palmer

In response to several comments:    Engine is coupled up to a C6 driving a non LSD 3.55. 8.5 x 16 rims.

A few comforts not available in 1971.... Cruise control,  A/C  &  heater.  Power steering from a Datsun 240K  next project!

I tried to attach a photo but it's too big. Well, too big for me to attach.

The 300 does not produce impressive fuel economy around town, but out in the open I get around 21 or so mpg. [you youngsters can google that into modern lingo]. There are numerous means by which to raise that figure to 24 - 25 or so.

I've only averaged 2,000 miles per year since 1978 so fuel economy is no biggy. [this calendar year it's traveled  42 km].

With very basic bolt ons there's no problem squeezing out 250+HP.  

 It certainly does not have the 'slap you back in the seat' zip of a modern engine, but it could tow the Queen Mary out of a mud flat. I'm still toying with the idea of a Barra just for fun.

I bought this truck when I was 23 & I'm now 65.  It was my wedding car - now it's just a distraction half way through a back to metal re-paint. 

I still have the 240.

This thread is quite old, but it caught my attention.

I have a 300ci factory EFI six in my 1971 F100. I transplanted it in 1998 - ousting the original 240.

It's a 4.9 litre, 4" bore with 3.98" stroke. Armour guard brought 6 into Queensland during Expo in '88. They were fitted into F250's. 

4 were ultimately crushed would you believe? Two survived - I have one and I believe the other went to a South Australian farmer who removed the EFI. 

Just though that may be of interest to some.

Cheers.