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  #1  
Old 03-07-2003, 11:03 PM
moparman318 moparman318 is offline
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Default Will these gaskets work?

The auto parts store had two different intake gaskets for a 83 truck 318. I got the ones that said 4Bbl 318 thinking that these must be the right ones cause it came 4Bbl stock. Heres a pic of the old and the new(blue) gaskets. My dad says to go back to the store and get the other ones. I say the blues will work and seal better. What do you guys say.
[IMG]C:\My Documents\My Pictures\intakegaskets.bmp[/IMG]
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Old 03-07-2003, 11:06 PM
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the pic didn't work. Are the new ones close or do they look the same?
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Old 03-07-2003, 11:11 PM
moparman318 moparman318 is offline
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The new ones are for a larger port. The gasket will hang over the manifold. I said wee could just razor blade any excess off. The eddy doesn't cover the whole head. If you give me your email I will send you the pic. He wants a second opinion.
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Old 03-07-2003, 11:13 PM
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t
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Old 03-07-2003, 11:13 PM
PLUM_72 PLUM_72 is offline
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When doing a 318, you have to be careful which intake and exhaust gaskets you buy. Most 318's have 2 barrel small port heads, if you use the larger 340/360 port gasket, sometimes you may get a leak. IMO, If you have 2 barrel heads, get the smaller 2 barrel gaskets.
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Old 03-07-2003, 11:19 PM
skankweirdall skankweirdall is offline
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Unless you have the large 4bbl intake. In which case use the large gaskets.
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Old 03-07-2003, 11:36 PM
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Looking at the pictures, I'd go get the other set.
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Old 03-08-2003, 12:36 AM
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It wont matter one bit. Most all gaskets hang out past the manifold too and you dont have to cut them if you dont want too. The factory gaskets are metal by the way and are one size fits all no matter if its a four or two bbl. manifold. You can even get them with the exhaust blocked off.
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Old 03-08-2003, 01:09 AM
moparman318 moparman318 is offline
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DWC: Will the new gaskets, which have a "organic" coating, seal any better than the old metal ones. When I first put the eddy intake on I used rtv because thats what the fel-pro box said to do. I have heard that this is not neccesary and have come to the conclusion that the gas might eat the rtv. BUT when I had some "accointances" swap the cam they didn't use rtv and it has been overheating ever since. I tried everything but ripping the block apart and getting it all hot tanked. I guess what I was aming for by putting new intake gaskets on was to eliminate a possible vaccum leak in the gaskets.

I stopped at the dealership today and they said the heat block off gaskets were like 11 bucks but couldn't be here until Monday. Has anyone ever used the Torque Plus gaskets. They have a mesh screen covering the ports sot the fuel re atomizes. this is supposed to give 10-15% better gas milage and more power\torque. http://www.jegs.com/cgi-bin/ncommerc...40&prmenbr=361
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Old 03-08-2003, 01:36 AM
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Gas will eat rtv sealler. I like the meatl one except on heads that have been milled a lot, 'cause you can go about .040 and not mill the intake if you use a paper gasket due to it's thickness. The gaskets fill in the irregularities of the metal to give it a seal so the surface has to have a certain amount of roughness for the gasket to embedd into. I'd rough the head and intake up a little with some fine paper and use the thick paper composite type gaskets.

The only rtv to be used is on the cork gaskets at the ends of the intake and a lot on the corners where the cork meets the intake gasket so it wont leak oil.

Toss those gaskets with the screens in them. What a rip off. For years on our race engines we try to speed up air flow and reduce restrictions cause heavy fuel ladden air does not like to change directions and slows down quick. This is just the oppisite. A huge restriction. Just another gimmick like the tornado that goes in the intake. What a crock. I'm surprise the FTC doesn't shut these people down faster than they do anyway.

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Old 03-08-2003, 02:07 AM
moparman318 moparman318 is offline
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I kinda thought they would cause a restriction. I do see the point about them slowing air down. But all flow being similar, would they work. I'm trying to find ways to up my milage. 8mpg isn't cutting it. I though about the tornado, and some fancy a$$ platinum injector contraption. I had to laugh at that. Their theory was basically put catalytic converter before the intake, because a cat in the exhaust just burns excess fuel left over from combustion. The crazy thing is that a cat just changes the combustion gases into a """"safer""" noxious gas. I haven't heard much about this at all, just some stupid magazine article.

The tornado would probably be more effective if it was in the intake itself. Or may be the heads. Kinda like swirl port heads.
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Old 03-08-2003, 02:17 AM
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Trust me that junk dont work. What's in your engine? Might can help you more if I know what's in it, but milage is hard to come by.
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Old 03-08-2003, 02:39 AM
moparman318 moparman318 is offline
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stock heads 178 I believe, stock short block, Eddy performer cam .420"/204, Eddy performer intake, Eddy performer 600 cfm carb, stock ignition, stock manifolds w/ 2" true dual exhaust runnin cherry bombs, 14X3 open element air filter(the cheap ones sold at all parts stores), 180*(?) t-stat. Thats about it. I did have a accel high vibration coil that put out 45,000 volts I think. I took a crap after a couple months. Blew all their fancy epoxy out of the top. I think that was partially my fault though. The 3.21 gears and 31-10.5 BFG's probably kill me during city driving. That and the 80 lb. bumber I have on the front end( never know when you might come across a cow standing in the middle of the interstate ).
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Old 03-08-2003, 02:54 AM
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Yeah, the tires are a killing you. I run the same gear and 32 x 11.5 BFG A/t's with a 360 4 spd. Ramcharger. And you thing your truck is heavy ... hah. Mine turns around 3200 to 3500 doing 55 to 65 so I know your is hurting.

First get some 1 5/8 tube long type headers and add an H or x pipe to the system. That will increase the bottom end torque some and help fule milage some. 2 1/4 to 2 1/2 would help too. I take it no converter 'cause that cost 20 to 40 horse and destroies fuel milage.

180stat's good. If you did not use the resistor that came with that coil or the right one it will blow up. I blew the top off one too. Working on a race car,I left the switch on and over time it heated up and blew the plastice top apart,right there at all four corners where it's bolted on.

Carbs too small. 800 thermoquad would be better performance and fule milage wise. Plus a stock filter with the hose that picks up air from the grill will help a lot too. If you use any type of spacer for the carb use the 4 hole ones on the street. They even make for the thermo quad too.

An o.d 5 spd would help too. Wished I could find one for my '85 Ramcharger, so I could just make it a bolt in job one afternoon. This should help some.
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Old 03-08-2003, 03:10 AM
moparman318 moparman318 is offline
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Headers are on the list. Thats what I am planning on to cap the 302's I also am planning on getting. MP headers are 1 5/8" with a 3" collector, Only problem is I don't know if cherry bomb makes 3 inchers. O well I guess I will have to straight pipe it I also was hoping for a 4 spd conversion. maybe 5 spd. but once I get the engine running good I am going to through the milage back to were it was to start with, in the form of a 4" lift and the tallest tires I can possibly run. Course 4.10's and a sure grip in the rear will accompany that. Man look at this list. Lots of dreams but not enough money.
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Old 03-08-2003, 03:17 AM
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Hedmans or Hookers would be cheaper than the mopr ones and probably much better. Cherry bombs should at least go to 2 1/2 that slip on the pipes plus they still make header mufflers that bolt direct to them, but I'd advise not to use them. Headers 2 1/4 or 2 1/2 the most with an X or H pipe in the system all the way to the rear. I'd use flowmaster. 2 chambers are plenty loud ans the perfromance is there.

Have fun with it.
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Old 03-08-2003, 07:16 AM
skankweirdall skankweirdall is offline
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I beg to differ, the large runner intakes came with the 360 gasket. If you use the small 318 metal gasket you could possibly end up with an unsealed port, or at least might miss part of the sealing bead in the gasket.

Secondly, if you mill the heads without milling the intake surfaces as well you are moving the two heads closer together and would need thinner gaskets for the intake, not thicker ones. If you find you are having to use thicker intake gaskets it's because the end rails are holding the intake up. You will have a mismatch in the intake ports that way. You might be able to use RTV for end seals or maybe the Magnum intake seals, (by the way the magnum intake gaskets work on non Magnum heads as well) to get the intake to sit down lower.
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Old 03-09-2003, 04:01 AM
moparman318 moparman318 is offline
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Well against majority advise I put the new gskets on instead of getting the "proper" gaskets. from what I can tell so far it run the same if not better. I am planning some 302's and thinner head gaskets(MP4120094), to boost compression 1 point. Will I
be able to run regular 89 octane pump gas wilth this? I think I might be able to run 89 if I use a colder plug and retard the igniton timing a little but I am not sure.
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Old 03-09-2003, 04:08 AM
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You can mill the head .035 on a stock 318 and run pump gas just fine. As long as it's around 9.5: 1 your o.k. 10.1 : 1 on 93 with timming turned down and colder plugs and healthy jets will sqeak by. Going in a 4 x 4 with all the rpm you will turn you would be much better off with a stock set of X or j heads with 2.02 1.60 valves. They out flow stock 302's without any mods that you always have to do to the little heads to make them work good. Much cheaper and more hp in the long run. Besides before it's over with you will upgrade again and then you will have to buy them anyway soo ... Might as well get 'em now.
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Old 03-09-2003, 04:32 AM
moparman318 moparman318 is offline
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Well I'm moving my last post in modified form to a new thread. I will get more than one response and not get off topic. It will be titled "302s in a 4X4". also more informative as to what I plan to do.
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