CLASS RACER FORUM

CLASS RACER FORUM (https://classracer.com/classforum/index.php)
-   Stock and Super Stock (https://classracer.com/classforum/forumdisplay.php?f=3)
-   -   Pontiac Iron Duke (https://classracer.com/classforum/showthread.php?t=88512)

Chuck Weissberg 11-08-2024 12:08 PM

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?

Billy Nees 11-08-2024 01:24 PM

Re: Pontiac Iron Duke
 
Quote:

Originally Posted by Chuck Weissberg (Post 705157)
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 11-08-2024 01:56 PM

Re: Pontiac Iron Duke
 
Quote:

Originally Posted by Billy Nees (Post 705165)
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 11-08-2024 01:59 PM

Re: Pontiac Iron Duke
 
Quote:

Originally Posted by Jeff Niceswanger (Post 705166)
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 11-08-2024 02:37 PM

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

Billy Nees 11-08-2024 02:42 PM

Re: Pontiac Iron Duke
 
Quote:

Originally Posted by Lyn Smith (Post 705170)
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 11-08-2024 03:32 PM

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

Chuck Weissberg 11-08-2024 03:34 PM

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

Chuck Weissberg 11-08-2024 03:37 PM

Re: Pontiac Iron Duke
 
Thanks for all the feedback and input,,, saves a "bad" investment

James Hill 11-08-2024 03:42 PM

Re: Pontiac Iron Duke
 
Quote:

Originally Posted by Chuck Weissberg (Post 705179)
Thanks for all the feedback and input,,, saves a "bad" investment

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


All times are GMT -4. The time now is 03:56 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.