400hp 318

[ivegonediving]

I am putting together a 400hp 318 for a 72 Barracuda and I was wondering if a high volume oil pump would push too much oil through the system?

I know this is kind of a wierd question, but I heard that the Chevy 350 will create oil leaks with a high volume pump because the oil will have no where to go with all the extra oil being pushed through resulting in too high of a pressure in the engine. Has anyone had this problem with a Mopar engine?

 

[AlleyoopMgv]

I don't know the answer to your question, but a 318 with 400 horse, Very cool!

 

[ivegonediving]

When I started the build I had to start with what I had, so the 318 was in the car and I had to go that way. I found an article in Mopar Muscle Magazine on a bolt together 400hp 318, I have been following that blueprint but then questions arise and MMM is not real good at answering questions.

I did send the grille off to Classic Car Ranch in Canada to see if they could rebuild it, it will be a miricle if they can because it was in two pieces with some missing parts. I sent them pictures and they said it could be done, hope I can afford it. lol

I am going to start a thread on the restoration forum with some pictures soon.

 

[sheetmetaldan]

Is the article online?

Is that article you mention online?I have a stock 318 and wouldnt mind some bolt on horsepower would love to read it myself.Thanks!

 

[ivegonediving]

The article is online, if you type "318" into the search engine of the MMM website and I think its the last article in the first 10 listed.

 

[/6 matt]

When I started the build I had to start with what I had, so the 318 was in the car and I had to go that way. I found an article in Mopar Muscle Magazine on a bolt together 400hp 318, I have been following that blueprint but then questions arise and MMM is not real good at answering questions.

I did send the grille off to Classic Car Ranch in Canada to see if they could rebuild it, it will be a miricle if they can because it was in two pieces with some missing parts. I sent them pictures and they said it could be done, hope I can afford it. lol

I am going to start a thread on the restoration forum with some pictures soon.

http://www.moparmusclemagazine.com/techarticles/mopp_0409_318_engine_build/index.html

 

[Rob C]

I am putting together a 400hp 318 for a 72 Barracuda and I was wondering if a high volume oil pump would push too much oil through the system?

No, but it'll use up a few extra HP due to the larger rotors and volume of oil. A standrad oil pump will do fine.

I know this is kind of a wierd question, but I heard that the Chevy 350 will create oil leaks with a high volume pump because the oil will have no where to go with all the extra oil being pushed through resulting in too high of a pressure in the engine. Has anyone had this problem with a Mopar engine?

I have not heard this about a Chevy engine. It certainly didn't create an issue with any of my MoPar engines when I used them.

When I started the build I had to start with what I had, so the 318 was in the car and I had to go that way. I found an article in Mopar Muscle Magazine on a bolt together 400hp 318, I have been following that blueprint but then questions arise and MMM is not real good at answering questions.

A basic rebuild and some general research will settle everything. A book called hot to rebuild and hot to hot rod my S/B MoPar will set you up with lots of info at your finger tips when your rebuilding the engine.

What questions do you have?

 

[ivegonediving]

Thanks Rumblefish, I talked to a place called Hughes Engines, www.hughesengines.com and they said the same thing about the oil pump. They said they are building 600-700 HP small blocks and all they ever use are standard oil pumps. I have never heard of these guys before but all they sell is mopar engine parts. If anyone knows anything about them please pass it on. Good or bad.

I really don't have many questions but I'm not an engine builder either so some things that are obvious to some are not always to me, I did e-mail MMM once to clarify the article and got no responce.

 

[Rob C]

Most of us know Huges engines. They were very helpful to me and I have used them for clarification (SP?!) on pushrod geo. I also purchased pushrods from them. They made it simple.

What was your question on the 400 hp 318 build?

 

[ivegonediving]

In the article they said they had a 273 forged crank laying around and just popped it in. My question was, if I could get a part number or a little more information on the crank before I spent $750 on a part that was not correct. I never received an answer on that.

I went with an Eagle forged 4340 steel crank with a stock 3.310in stroke and it seems to fit everything fine.

The reason I was asking about the oil pump in the first place was I am getting ready to short block the engine and need to buy one before the windage tray and pan go on.

The pictures are what I am starting with for the restore.

 

[Rob C]

In the article they said they had a 273 forged crank laying around and just popped it in. My question was, if I could get a part number or a little more information on the crank before I spent $750 on a part that was not correct. I never received an answer on that.

OH! All small block cranks, except the 360, will interchange, AKA drop in. What the issues to look out for are;

If it is forged or not. The cast cranks have a thin part line while the forged have a wide 1/2 to a big fat 5/8 line down there length.

At the rear of the crank, you'll want to make sure of;

If your useing a 4spd, the piolt hole is drilled for a manual trans or not. It can be machined in easy.
The flange must be a bit newer than the earliest one for easy use of newer parts.
6 bolt flange, not an 8 bolt (More likely a race part) or a odd older crank with weird flanged ends.

There is a parts imterchange book that has casting /part numbers that wouold cover this. For the most part, this is something that would be very odd to uncover/find during a build up.

 

[sheetmetaldan]

Nice car thats a pretty good starting point!