The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Np-833 - a833

D13 · 12-09-2012, 10:09 AM

Do you have an iron case or an aluminum case? Aluminum case versions are not as strong. It seems most of the 4wd cases are iron and most of the 2wd are aluminum. I personally would hesitate to use one on a 500hp HP LS motor. They were designed for fuel economy not racing.

12-09-2012, 10:09 AM	#5
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: Np-833 - a833 - np440 Do you have an iron case or an aluminum case? Aluminum case versions are not as strong. It seems most of the 4wd cases are iron and most of the 2wd are aluminum. I personally would hesitate to use one on a 500hp HP LS motor. They were designed for fuel economy not racing. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors