Scott H.

Here's some cool information on the Cobra Jets

http://www.428cobrajet.com/cj-vs-scj.html

http://en.wikipedia.org/wiki/Ford_FE_engine

http://auto.howstuffworks.com/30008-...-explained.htm

BTW: this was just a quick google search. There is a lot more information out there than just this.

HTH,

Scott

rmodel65

i was talking about the 03-04 sc cobras

baddog671

I was looking through a magazine and I saw an ad for 351 aluminum blocks. Kind of expensive but it only weighed 92 pounds lol.

Gun Jam

Is that true about expansion and contraction of an aluminum block being too much for a daily driver?

Isnt just about every modern car that’s not a total pos come stock with an aluminum block now days?

Gun

baddog671

There are different grades of aluminum used in parts though isnt there?

Scott H.

Alloyed aluminum makes a great choice. The part determines the alloy and heat treating process. Aluminum blocks are even used in diesel applications. No worries for daily, or track use.
Unlike the duratec motor in Vega's of the 70's we've come a long way...baby
They have even had success with using a special formuated type of plastic to make an engine block. To the best of my knowledge it is still in the developemental stages. Although I did see something about dyno graphs on one.
I think 92 lbs, sounds a bit light for the 351, I thought they were closer to 100 lbs, (but I could be thinking of the Dart Block).

Stop and think about it, We all ready use aluminum pistons and aluminum heads (w/half inch or thinner decks), why not an aluminum block. The dry fit cylinder liners are steel, and much thicker than the walls of a stock block. Also they use billet steel 4 bolt main caps.
the down side would be coolant system maintenance. Definitely LLC and distilled de-ionized water only. And change it every two years. Of course we should be doing that anyways.

Gun Jam

Scott

That’s what I thought, The fella who posted earlier seemed to think otherwise. I’m just calling em how i see em (geez doesn’t every car have aluminum blocks now).

As for plastic Ill steer clear as long as I can, that just feels way too tacky to say (even though its going to probably be pretty good) They will have to come up with some really cool name for it like "Petroleum Carbonate Block" a "plastic block" just wont float

Gun

rmodel65

haha it probably would