Hot Rods THE INDUCTION THREAD

Ever see one of these?

 

Rat motor developed for NASCAR?

 

Nope, canted valve 302.

 

I think this is an AMC engine.

 

Yeah looks like the one that was in the rebel sst funny car that Hayden Proffit ran


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Trans Am ( SCCA, not Pontiac ) motor ?

 

Z/28 prototype 302.... Chevy's answer to the Ford tunnel port 302....

 

The all aluminum engine is 1 of 1, a GM test mule, been in a few hands, I can imagine the appreciation rate was considerable at each sale.

 

Remember those late 60's AMC commercials.

 

Looks like it's only running around 5 pounds of boost.....

 

Interesting that it appears to have a forged crank - off the shelf unit perhaps - rather than a nice Moldex billet.

 

This engineering program was an extension of the Z/28-302 that used a 3” crank and with those being readily available there was no need for a custom crank. Also, I don’t know how rigid homologation regulations were to keep an engine legal for Trans-Am but I would expect all components had to be RPO items.

 

The pistons in the '69 302s we're all factory installed TRW Forged units....
My ponys also had factory installed TRW Forged pistons....

 

I have several sets of factory Z28/302 pistons, one set is brand new. The heaviest pistons known to man <almost> No one trying to make any serious power would ever use them today. I just wonder if Traco was actually using them back in the day.

 

You should check out some 409/409 HP pistons.

 

You can bet that whatever was the standard " back in the day" Traco was on the leading edge.

 

They probably looked like ashtrays after machining.

 

I can well imagine....

 

Yup, can't get much heavier than those.

 

I may have gave a run against one of those striped cars....nah, no way.

 

I think they used the 12:1 pistons.... Not sure..

 

11 to one in my 67 302.