Intake manifold gasket replacement
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Junior User
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From: Whitehorse, Yukon, CAN.
Intake manifold gasket replacement, alum or steel intake?
Greetings from the Yukon,
I will soon be picking up a '76 f250 4x4 with what I believe to be a 360 even thought the folks with the truck say it has a 390.
One problem with the truck is that a recent intake manifold replacement has seemingly caused blue smoke from the left bank.
My question is if I am going to the trouble of replacing the gasket for the second time and I can afford an aftermarket manifold in aluminum would this be a good idea rather than stick with the stock steel unit.
I believe the current carb is a two barrel unit and I'm thinking of a 650 cfm four barrel c/w aluminum manifold. For the price of these parts and being that the job would be like one third done after the dismantle would the gains realized be worth it or would it be better to just stuff new gaskets in and go. I don't mind a little more grunt but i also want a driver. What do you think on this one?
Also the area where I live has winter temperatures in the -40 degree range sometimes and reliability takes precedence over trickness for me as this will be a daily driver, rain, shine or 40 below.
Tia on this one,
Bob
I will soon be picking up a '76 f250 4x4 with what I believe to be a 360 even thought the folks with the truck say it has a 390.
One problem with the truck is that a recent intake manifold replacement has seemingly caused blue smoke from the left bank.
My question is if I am going to the trouble of replacing the gasket for the second time and I can afford an aftermarket manifold in aluminum would this be a good idea rather than stick with the stock steel unit.
I believe the current carb is a two barrel unit and I'm thinking of a 650 cfm four barrel c/w aluminum manifold. For the price of these parts and being that the job would be like one third done after the dismantle would the gains realized be worth it or would it be better to just stuff new gaskets in and go. I don't mind a little more grunt but i also want a driver. What do you think on this one?
Also the area where I live has winter temperatures in the -40 degree range sometimes and reliability takes precedence over trickness for me as this will be a daily driver, rain, shine or 40 below.
Tia on this one,
Bob
Last edited by yukonhighboy; Oct 18, 2003 at 01:50 PM.
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
On a stock engine there is little to be gained over the stock 2bbl manifold but if you plan on getting a hotter cam or rebuilding it a little hotter in the future I would save your back the trouble and grab the aluminum.
Laughing Gas
Joined: Jul 2003
Posts: 826
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From: New England
I suggest either a factory 4bbl intake (ideally an aluminum PI, but that is probably not easy to dig up), or an Edelbrock Performer (not the RPM on a stocker).
For a carb, if you have a spread-bore intake (like the Performer), grab a Rochester Quadrajet. With a stock square-bore flange, I suggest the tried-and-true 600cfm 1850-series Holley vacuum-secondary.
For a place that cold, you may want a manual choke.
For a carb, if you have a spread-bore intake (like the Performer), grab a Rochester Quadrajet. With a stock square-bore flange, I suggest the tried-and-true 600cfm 1850-series Holley vacuum-secondary.
For a place that cold, you may want a manual choke.
Thread Starter
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Junior User
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From: Whitehorse, Yukon, CAN.
So, in your opinion the performer with the 1850 series holley (600 cfm) would be a good choice and allow for future mods as well?
With a combo like this are there linkage / supply issues that enter into the picture? The reason i ask is that I will be passing through a major city on my way to the truck and if I make mods before hitting the road for my 1200 mile drive I can probably get better prices in the city as opposed to the more rural area where the truck is.
With a combo like this are there linkage / supply issues that enter into the picture? The reason i ask is that I will be passing through a major city on my way to the truck and if I make mods before hitting the road for my 1200 mile drive I can probably get better prices in the city as opposed to the more rural area where the truck is.
Last edited by yukonhighboy; Oct 18, 2003 at 07:09 PM.
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
If you are going to keep the engine mild forever then yes a performer with a 600cfm carb would be right on target. If you are planning on bulding a screamer then the performer RPM would be the way to go. You won't loose much bottom end with it vs the performer. The RPM doesn't have the heat crossover that the performer does. As for buying parts I would do it online. It will save you a good bit of money vs buying them from a speed shop. Summit or Jegs is a good place to start.
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Junior User
Joined: Oct 2003
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From: Whitehorse, Yukon, CAN.
Likely I will just redo the gaskets and split as really my main priority is to get the truck home safely and without too much delay. I am going to get a shop manual on the way some where. any suggestion here? I have used the standard chilton / haynes type autostore type stuff and have frequently been less than satisfied with the exception of the wiring diagrams.
I already have some work to do before coming home (emergency brake cables) so time is kind of an issue.
Thanks for the advice, I'll likely use it once I'm home.
Bob
I already have some work to do before coming home (emergency brake cables) so time is kind of an issue.
Thanks for the advice, I'll likely use it once I'm home.
Bob
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Laughing Gas
Joined: Jul 2003
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From: New England
Originally posted by Ratsmoker
The performer only comes as a squarebore man.
The performer only comes as a squarebore man.
Edit: OK, so maybe I don't. I just went and looked--it's a spread-bore Perf, but not for an FE. Oops...sorry.
Last edited by Jarlaxle; Oct 18, 2003 at 08:35 PM.
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From: Sun River St. George
OKAY! As I see it you are 1200 miles from home, you have a handfull of tools and an intake manifold tucked under your arm and a carburetor under the other! Think about this for a minute! Arent there any 4x4 Fords closer to home? I know you are out there but when I lived in Alaska everybody had a 4by, most had plows. How about this? Pay somebody you trust to re-do the intake and go over this truck with a fine tooth comb. Be sure there are no problems that will nail you on the way home (in the winter no less). Good luck! Please post back with the end of the story this will be an adventure for sure. Wish I was going along.
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Joined: Oct 2003
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From: Whitehorse, Yukon, CAN.
Hey William,
Wish there was something closer but in truth there seems to be a good selection and good prices in Alberta. The folks that have the truck now run a helicopter business and theres a hanger onsite to do the work in.
Don't know anyone to go over the truck but have talked quite a bit to the owners and they seem to be concerned over making sure I know the truck's problems as it is a long trip to get there and be disappointed. At worst I guess I would have to spend a little more spookign around looking for another truck but like I said there seems to be a good selection.
Check out canadatrader.com and look around. I was pleasantly surprised. I was thinking of bringning back a 1952 m37 dodge 4x4. Now that would have been an adventure for sure.
I am looking forward to the trip with a little trepidation for sure.
1200 miles seems alot but things are kind of spread out around here and 600 miles a day is not that long a drive really, used to work on the road for 10 years and made these kind of miles regularly. Still though when things starting going south thats when it seems like a long way from home.
See ya
Bob
Wish there was something closer but in truth there seems to be a good selection and good prices in Alberta. The folks that have the truck now run a helicopter business and theres a hanger onsite to do the work in.
Don't know anyone to go over the truck but have talked quite a bit to the owners and they seem to be concerned over making sure I know the truck's problems as it is a long trip to get there and be disappointed. At worst I guess I would have to spend a little more spookign around looking for another truck but like I said there seems to be a good selection.
Check out canadatrader.com and look around. I was pleasantly surprised. I was thinking of bringning back a 1952 m37 dodge 4x4. Now that would have been an adventure for sure.
I am looking forward to the trip with a little trepidation for sure.1200 miles seems alot but things are kind of spread out around here and 600 miles a day is not that long a drive really, used to work on the road for 10 years and made these kind of miles regularly. Still though when things starting going south thats when it seems like a long way from home.
See ya
Bob
Last edited by yukonhighboy; Oct 23, 2003 at 10:26 PM.
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