1978 Dodge 440 RV with cracked manifold

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1978 Dodge 440 RV with cracked manifold

Home > Discussion Forum > Mechanic's Corner - Engines

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All Messages in Thread	Author	Date
1978 Dodge 440 RV with cracked manifold	Frank	4-20-03
We own a 1978 RV with a Dodge 440 engine that has a cracked manifold on the passenger side. I am looking for a replacement and I don’t know where to start. Does any one know where I can go to find used or third party parts. Or should I just change out the exhaust system go to headers? The RV is old and I am trying to keep the cost down.
Re: 1978 Dodge 440 RV with cracked manifold	Ron	5-17-03
Ernie's right. Get Thorleys. Hedmans won't fit 440-3 and Hooker is too light duty. I didn't get 50 hits at car-parts.com that apply to your RV. Lots of car manifolds and other years. Maybe those could work. I paid $350 for my Thorleys. I needed both manifold replaced. The cheapest replacement I found at the time was $125 ea plus shipping those heavy cast iron manifolds($$$$). Which would have been cheaper over all, but that's still putting on USED equipment. The marriage of the headers to the existing exhaust system is very simple and not a factor in my decision.
Re: 1978 Dodge 440 RV with cracked manifold	larry	4-20-03
Go to baries auto parts.com
Re: 1978 Dodge 440 RV with cracked manifold	David	4-21-03
Http://www.car-part.com/ Got about 50 hits
Re: 1978 Dodge 440 RV with cracked manifold	john	5-15-03
If you're trying to keep costs down, headers aren't the way to go. Headman, Hooker and Thorley headers for a 440 motorhome engine will run about $350 -500 depending on the manufacturer. Plus you'll have to change the exhaust pipes from the headers back, either new or tie in to existing. You also have to be careful when purchasing header that they will fit a 440-3 engine, which is typically found in a motorhome. Most cheaper headers won't fit the 440-3, only the car 440. If you want to keep costs down look for a used manifold. Call a truck wrecking yard and have them look for you. You can also take the manifold to a welding shop and have them fix it. Today's products for cast iron welding are fabulous and they could probably fix it for about $35-50. good luck
Re: 1978 Dodge 440 RV with cracked manifold	Fay	12-29-03
I am looking for information on Dodge Transvans arround the 1978 year, I have a 1972 Dodge Motorhome, but may want to purchase a Transvan, I am located in central California. Pics, or Information, brochures, ect, anything you may have acess to would be appreciated. Thanks, Fay
Re: 1978 Dodge 440 RV with cracked manifold	Ernie	4-26-03
Contact Thorley Headers in California. If you replace the manifold it will crack again. Headers will improve engine temperture drasticaly,and help with power and gas mileage.
Re: 1978 Dodge 440 RV with cracked manifold	Ed	5-16-03
John's right,I would add a finish machining on the joint face for flatness.
Re: 1978 Dodge 440 RV with cracked manifold	cathy	9-3-03
Don't know much on where to find one. But I was curious because I have a 78 allegro also and haven't seen to many of them around. I have a dodge 440 also thats 26ft long. I have been looking to replace the tin on the front passenger side and have no idea where to find something like. I will keep looking and if I hear something I will let you know.