[foxwolf321]

Good morning all,

I have done a little digging, but could not find anything specific on what i would need to do to get the most out of a 67 sprint using a 69 block. any help is greatly appreciated.

[boater bill]

The head will bolt up no problem. if the head is a 67 sprint head, it is a closed chamber head and will give you over 11-1 compression with the longer stroke 69 250. The valves are the same size for the 230 and 250 engines.

[foxwolf321]

hmm, dont want to get over 11-1 unless that can run on 93 octane?

I am completely new to the engine rebuilding thing (cars in general), so please forgive me if my questions are common knowledge.

I read that the timing is set up differently on a 69 block then it is on a 67. will i run into any trouble there?

thanks again

[boater bill]

The timing marks for the cam and crank are different, but the cams are the same except the manual shifted Sprints in 69 got a bigger cam.

[camerjeff]

If you use a 66 or 67 230 1bbl head your compression ratio should be around 9.2 or 9.3 but if you use a 230 4bbl head your CR will be over 11 to 1, not really streetable. All the parts off the 67 engine that have to do with timing will bolt to a 69 block.

The only issue with using the 230 1bbl head is getting the spring pockets machined for the duel valve springs used on the 4bbl heads

[Cammer-6]

if going in a 67 A body the 69 balancer will not fit

[camerjeff]

I keep forgetting about the large balancer clearance issue when putting one in the 66/67 A body chassis. Glad to have your input Gary, as I have never done that particular swap!!!!

[george kujanski]

I had a '67 Sprint Lemans, advertised 10.5:1 CR, when 100 octane went away, I was using 93 and the thing would ping when accelerating from a stop.

Finally put in a 5 speed T-50 with a lower first gear and all was good, even had a .8 to 1 OD.

George