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300 Intake / Exhaust Gasket ?

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  #16  
Old 01-05-2018, 11:37 AM
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With the general consensus in mind and my mild performance build, 9.3 CR / mild home port & polish / 1.84 intake, 1.6 exhaust / RV cam / 1.7 BBC roller rockers I think that maybe a set of EFI dual exhaust manifolds on my 1992 EFI head will work out fine and have the stock look I want. Sure don't need to get into any milling as I don't have one.
 
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  #17  
Old 01-05-2018, 03:50 PM
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Originally Posted by old28 View Post
With the general consensus in mind and my mild performance build, 9.3 CR / mild home port & polish / 1.84 intake, 1.6 exhaust / RV cam / 1.7 BBC roller rockers I think that maybe a set of EFI dual exhaust manifolds on my 1992 EFI head will work out fine and have the stock look I want. Sure don't need to get into any milling as I don't have one.
You can always do a little porting on the EFI manifolds too. It will get more flow out of them without going to headers. Headers will still outperform them. But it's a good compromise, to get the most performance out of the manifolds. The outlets on them can be opened up quite a bit.

Here's some pics of one I ported last year.

Stock:



Ported:



Runners stock:



Runners ported:


 
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Old 01-07-2018, 09:08 PM
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fordman75 -- Thanks for the pictures, nice port job. Still looking for a good used pair (front & back). Would be nice if I could purchase the one you did and have it for a pattern. Will see if I come up with any.
 
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Old 01-07-2018, 09:44 PM
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Originally Posted by old28 View Post
fordman75 -- Thanks for the pictures, nice port job. Still looking for a good used pair (front & back). Would be nice if I could purchase the one you did and have it for a pattern. Will see if I come up with any.

I bought the one I have just to port one again. I ported some in the past but just couldn't remember how much you could actually open up the outlets on them.

I really like doing the porting on stuff. I just kind of zone the rest of the world out and go to town on stuff with the grinder. But now I have a single ported EFI manifold and nobody wants just one.

I did some surfing on ebay last night. I found a reasonably priced front EFI exhaust manifold. So I bought it. Once it warms up this spring, I'll port the front one I just bought. Then I will have a pair of ported EFI manifolds I can sell.

That way I don't have a single manifold laying around collecting dust.
 
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Old 01-08-2018, 01:21 PM
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fordman75 -- maybe I can purchase both from you when you get the second one done. I might buy a stock EFI set just so I can mock up the intake/exhaust. I would be money ahead to have you port them as I do not have all the tools to do it. What did you have to pay for the one you got off ebay? Thanks again.
 
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Old 01-08-2018, 02:39 PM
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Originally Posted by old28 View Post
fordman75 -- maybe I can purchase both from you when you get the second one done. I might buy a stock EFI set just so I can mock up the intake/exhaust. I would be money ahead to have you port them as I do not have all the tools to do it. What did you have to pay for the one you got off ebay? Thanks again.

Well if you might be interested in them, I'll give you first shot at them when I sell them.

I don't buy them off Ebay unless I find a very good deal. The guy I bought this from had it listed for $19.99 or best offer. I offered $15.00 and he took that. That may seem really cheap. But the downside to buying them off ebay is shipping. This one cost me $21.00 shipping. So the total with shipping was $36.00. The local U-pull it yard charges $19.00 ea. for them. But I'm willing to pay a little more this time of year not to freeze pulling them off myself.

The prices can vary quite a bit on these. I've bought and sold these for as little as $25.00 a pair ( not including shipping ) . But I've seen them being sold for as much as $150.00 a pair.

A good place to check is this website Car-Part.com--Used Auto Parts Market It lets you search a bunch of salvage yards at once. In my area the yards charge $15-$60 ea. for those manifolds.


Another option is Ebay is getting flooded with the new china made reproduction manifolds. But with those you are chancing the fit. The reproductions aren't exactly known for their high quality on the fit and finish. Personally I prefer a set a used ones myself.

Sorry for the long reply to a short question.
 
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Old 01-08-2018, 06:12 PM
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fordman75 -- Thanks for the first shot offer. Please let me know when you are ready to sell. We don't have many used part places around my area. I am going to the Long Beach Hi Performance Swap Meet next month and well look for a good used pair. This swap meet is every month and has been running for 35+ years. Tom
 
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Old 01-08-2018, 07:43 PM
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Originally Posted by old28 View Post
fordman75 -- Thanks for the first shot offer. Please let me know when you are ready to sell. We don't have many used part places around my area. I am going to the Long Beach Hi Performance Swap Meet next month and well look for a good used pair. This swap meet is every month and has been running for 35+ years. Tom


Will do. It will probably be sometime in March, April at the latest. It will all depend on Mother nature. I do it all on a work bench in my driveway. So I'm kind of at the mercy of the weather. But I'm usually itching to do some work on something by the time march rolls around.

I like swap meets, but I don't have very good luck at them. Either I can't find what I'm looking for. Or they want way too much for it.
 
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Old 01-09-2018, 10:05 PM
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Your right on about swap meets
 
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