Pontiac Iron Duke
 

I am wondering if the Pontiac Iron Duke 4 cylinder engine would be competitive in NHRA stock or SS class racing or is factored too high?

Re: Pontiac Iron Duke
 

You might want to narrow that list down just a bit. There are a bunch of GM combos that use very different variations of the "Iron Duke" based on year and body style. Some are OK and some not so much.

Re: Pontiac Iron Duke
 

Our fleet of Hyster and Yale forklifts at the plants had 181 cu in GM iron Dukes. Years before that they were 151 cu in GM dukes.

Re: Pontiac Iron Duke
 

The 181 was/is an industrial and marine variation. Check out the cylinder head if you get the chance, it's very good!

Re: Pontiac Iron Duke
 

The 62-69 Novas had a 4 cylinder option available. It was not called an Iron Duke.

Re: Pontiac Iron Duke
 

That would be the granddaddy of the "Iron Duke". Yac and I have brain-farted for years about doing a 4 cylinder 62-3-4 Chevy II 100 for W stick (Yac) or auto for years!

Re: Pontiac Iron Duke
 

Bottom ends/main area of the 151 block are very weak along with the crankshafts being very spindly---heads are a problem with no flow u will have see what they allow as a stocker I would forget it as a SS it all depends on what they will let you get away with--and the carbs probably are lacking any thing to be used for performance---no support for the cam shafts only 3 bearings you need 5 to keep it from whipping around--- you will have to make or really scrounge around for any parts to make it work---if you never ran a 4 before its going to be a long learning curve to be successful-- FED 387

Re: Pontiac Iron Duke
 

Sorry for my stupidity....was looking at the 1986 151 cu in 4 cylinder.....don't understand why you are not a mind reader

Re: Pontiac Iron Duke
 

Thanks for all the feedback and input,,, saves a "bad" investment

Re: Pontiac Iron Duke
 

I have a super duty block I would probably part with.