Pontiac Iron Duke

[Chuck Weissberg]

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?

[Billy Nees]

Originally Posted by Chuck Weissberg

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?

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.

[Jeff Niceswanger]

Originally Posted by Billy Nees

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.

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.

[Billy Nees]

Originally Posted by Jeff Niceswanger

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.

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

[Lyn Smith]

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

[Billy Nees]

Originally Posted by Lyn Smith

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

[FED 387]

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

[Chuck Weissberg]

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

[Chuck Weissberg]

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

[James Hill]

Originally Posted by Chuck Weissberg

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

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