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Mustang Technical Discussion > Pre 1973 > What's a fair price for CJ FE exhaust manifolds? > Community Forums > Mustang Forum Australia - Mustang Tech

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What's a fair price for CJ FE exhaust manifolds? Reply to topic

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mungus
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Not exactly a tech question so apologies...

Found a set of 2nd hand OEM correctly numbered 69-70 CJ exhaust manifolds for sale, so I'm wondering what would be a fair price in the opinions of the learned viewers here?

No cracks, just been blasted but no studs etc. I had decided to buy a new pair from Scott Drake or FPA headers but I figure these save time and shipping and may do the trick for my 390 build...

Thanks in advance.


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69candy
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No expert, but I would say $4-500. Repos run around $400 us each from mem


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mert
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If you can get a good pair for $400-500 Aus buy as many as you can.

The good repros are $750-ish US for a pair.

A good set of clean OEM, matched date correct, are easily worth a grand to a concours type.

Price depends on if the seller knows what they have... anything under $700 US and you are ahead as good OEM always brings more then repro.


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mungus
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Thanks Mert, he's asking $700 AUD for the pair, but I've yet to see them close up.
If they are good I figure that's not too bad, but of course who knows what the stud threads are like etc.

Scott Drake repros are around $770 USD a pair +post.

www.ebay.com/itm/1968-...mp;vxp=mtr

Hoping to have a look at them soon. Maybe won't flow quite as well as the FPA headers, but no doubt a big improvement on my OEM 390 ones.


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mert
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Stud threads are really not a big issues. Buy a new set of studs for $20, heli-coil or red Loctite in if you have to, cheap fix.

As for any staggering improvements over the stock 390, +10-15 Hp and +15-20 lb-ft of torque for the 428CJs based on dyno pulls on a few engines Jay Brown tested for his FE Intake Comparo book... measureable, but not overwhelmingly significant.


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mungus
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Given that modest increase and the head fitting issues I may just drop the whole idea and just go for my first idea from a few months ago and buy a pair of Edelbrock 60065 heads and fit FPA ceramic headers.

By the time I try to tune my "GT" 390 smog heads and muck around fitting CJ exhaust & PI manifolds it seems I'm going to spend a lot of time and a fair bit of $$$ for not that much more HP & TQ and still have a pig heavy front end. As someone pointed out to me on the phone today, the CJ manifolds weren't fitted to 390's as OEM anyway, so it was never going to look STD to even a semi trained eye! Maybe better to go Edelbrock alloy everywhere (heads, manifold & water pump) and still paint it all FORD blue with a new 67 OEM repro open air cleaner and my OEM Autolite Petronix switched and recurved dizzy. That plus the HYD roller cam AND maybe the 431 stroker and it should pull well and still look "pseudo" factory.

So its plan C now.... Smile

Thanks for the input everyone. Bloody thing is still on the ship too! Nov 29 they are saying now... GRRRR


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Last edited by mungus on Sat Nov 14, 2015 5:09 pm; edited 1 time in total

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mert
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so it was never going to look STD to even a semi trained eye!


Telling the difference between a 390 block and a 428 when installed and with all the kit on it is not that easy...

What is this?





Or this?




Or This





Can you tell what block is in each car?

But yes, going for the true OEM look is costly. if "Max HP" is your goal, better options.

On the FPAs, they did do better than the 428CJS, about the same bump again over the 390GTs, +20-25ish depending (over the 428s). Hooker Super Comps did very well, but have hear they are a real PITA to install.

Funny that Dynomax FE Truck Headers proved to be far better than most of the others on the dyno.... and cheaper! But sadly don't fit a Mustang....


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boofhead
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They are all boat anchors .......... Outta here!


I will someday think of something clever to say.

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boofhead
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Why don't you use a proper big block ford engine (385 series) like a 460 and then stroke it to 545 cid and have the bees knees. Lots of great heads that flow the kind of air you really need to flow. You can peel the tyres off the rims any time.

www.coasthigh.com/Ford...s/1301.htm

www.enginelabs.com/new...der-heads/

It really is just a big windsor engine.....


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mungus
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Good post Mert, thanks.

I'd like to stick with my 390 block and keep some kind of factory appearance. The idea of running the 67 OEM air cleaner and fitting a Monte Carlo bar is one I've seen in TX and I liked it. Looked very nice and should help a bit.

I'm not chasing huge HP. More a case of looking at the best use of my $ to get a nice streetable 400 odd hp and good torque without making a mess and creating headaches for myself. Mixing and matching 390GT and CJ bits has a few hooks it seems and it all costs $$$, so given that the Edelbrock heads / manifold / water pump etc all save weight as well as adding HP and work together nicely, that may be the logical way to go.

I'll probably still blast, oil and bag all the old OEM bits anyway, just so I've got it all should someone want to go concourse one day.

Anyway at least its given me a decision on the topic of the CJ manifolds. Simply don't want them now!
Would just be an expensive PITA and all compromise with my 390 smog heads it seems.


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boofhead
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Mert is a quality poster for sure.

Your plan makes a lot sense. Good on you for having a well thought out plan.
Just ignore my fun jabs. I am just having some fun.


I will someday think of something clever to say.

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goldscode
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Quality Poser alright !! Lucky boy


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nassi
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goldscode wrote
Lucky boy


Yep, the harder he worked the luckier he got.
😄


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boofhead
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There is that word again...... worked....... maybe I need to listen to it - but I only want to be lucky.


I will someday think of something clever to say.

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69candy
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I am just putting my CJ engine back together now. I went with a set of BBM heads for a bit more. Also fitting a set of Hooker super comps. They tell me they will fit in ok with them bolted to the engine. Will know next weekend all going well!! This is in a 69. got the hookers out of WA from ebay About $750 delivered. Mine will also be stock looking bar the headers


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