Given recent discussion of leaky C4 oil pans:
Quote from: GT350AUS on April 28, 2020, 05:40:06 AM
I've constantly got a leak from the pan gasket.
I've removed the pan and straightened the ridge along the bolt holes, refitted a cork gasket and torqued the bolts to 15 foot pounds.
The leak continues.
I've don't it 3 times and still leaks.
I welcome suggestions as to what can fix this problem.
Acknowledging an aluminum pan for a C4 transmission is not original, is there a fully finned no-name pan out there, or one with enough meat so any raised name can be ball milled down to remove the name (or just leave the finned remnants there of)?
I haven't seen them in 30 years or so BUT there were three that appeared around the time that I bought my COBRA 351c oil pan. Maybe 1978 or so.
There were two depths. Standard and extended depth. Plain finned and COBRA lettered.
You are going to need to make the rounds with the vendors. I'd start with Branda since he has carried so many different products and see if they remember or know the source?
As I recall, didn't B&M offer one? Polished Cast aluminum with fins on the bottom and the B&M logo in the center of the fins. The ones I remember seeing in magazine ads I think were not C4 applications. Anyway that's what I remember. A Cobra one would be cool. Good luck in your search.
Cheers,
~Earl J
There are a few sources for the C4 ,aluminum pans. Most all are about 1" deeper than most stock pans and come with filter extension. Most Mustangs use a "case fill" ,where fill tube enters the case,not the pan. I think they have plenty of "meat" to mill a design.
There are several options at Summit Racing.
https://www.summitracing.com/int/search/part-type/automatic-transmission-pans/transmission-type/c4?N=part-type%3Aautomatic-transmission-pans%2Btransmission-type%3Ac4&SortBy=Default&SortOrder=Default
Roy
Be careful on the deep pans. They really hang down in harms way. Standard depth is safest in a Mustang. A pickup truck is another story. It's up there.
I have several. two from B&M, one "rare" one made by Craig Conley with COBRA logo in the finned area ( no not for sale) and a couple from SpeedMaster ( AKA Procomp). They use a bolt on pickup extension and Chrysler Torqueflite filter. These hold about two additional quarts and when used with a"modern" paper gasket and virtually leak free. They don't hang down lower than headers .
Randy
My vote would be for the no name Summit pan if you wanted to go with a extra cooling finned pan . The Cobra ones are extremely rare.I haven't seen one for sale for many years.
Quote from: gt350hr on April 30, 2020, 11:25:35 AM
I have several. two from B&M, one "rare" one made by Craig Conley with COBRA logo in the finned area ( no not for sale) and a couple from SpeedMaster ( AKA Procomp). They use a bolt on pickup extension and Chrysler Torqueflite filter. These hold about two additional quarts and when used with a"modern" paper gasket and virtually leak free. They don't hang down lower than headers .
Randy
Headers don't really care much if you put a flat spot on the collectors. The filter and pickup on the pan might feel differently and cast aluminum doesn't like getting crunched?
There was one cast iron manhole here, sticking up about 1-1/2" higher then it should have been. Towers would hang out near it waiting for the next victim. It was like that for ten years and I keep thinking of the Mangusta that needed a skid plate to help the bellhousing survive?
Do you need extra fluid capacity on a c4? I do think I had the B&M pan on the car when the c4 was still in it?
Don't mind me. I'm normally paranoid.
Here's another tip. When you are in the field and you hear this whip, whip buzzing at your ears, you don't stand up and say WTF, you get down on your belly because that sound is someone shooting at you from a distance and the bullets are whizzing past your ears. ;)
In my case I have a 3" smaller than stock diameter convertor which loses about two quarts of volume and it slips more generating more heat. For that reason I use the deep pan. Good thing is it doesn't see street miles.
Randy
Quote from: gt350hr on April 30, 2020, 01:42:50 PM
In my case I have a 3" smaller than stock diameter convertor which loses about two quarts of volume and it slips more generating more heat. For that reason I use the deep pan. Good thing is it doesn't see street miles.
Randy
I decide by making a fist. If I can hold it vertically between the ground and the item, that's enough clearance. If it only fits horizontally, then that's a no go.
Some of the gas stations here also have very high filler necks for the tanks. They don't think so. They call me an AH.
Now if they actually knew me, then that's harder for me to defend against but just out of the blue, they have no documentation?
Is this what you are trying to find. It is aftermarket. Too nice to put on a car and not see.
Take care
Cory
Cory ,
That is a "newer" version than mine. Mine has the fins going front to back and has two COBRA logos ( similar to a '65 intake) in between the outer fins on each side.
Randy
Quote from: gt350hr on April 30, 2020, 05:24:03 PM
Cory ,
That is a "newer" version than mine. Mine has the fins going front to back and has two COBRA logos ( similar to a '65 intake) in between the outer fins on each side.
Randy
The one I had seen has the COBRA on the sides.
Quote from: gt350hr on April 30, 2020, 05:24:03 PM
Cory ,
That is a "newer" version than mine. Mine has the fins going front to back and has two COBRA logos ( similar to a '65 intake) in between the outer fins on each side.
Randy
Hi Randy,
Do you have a image to share? I'd love to see. When you say "newer" are we talking 1990's, 1980's or ? I wold guess my pan is a least 40 years old, but just guess. For sure it is not the 60's.
Take care
Cory
Currently on ebay
https://www.ebay.com/itm/383525080202
Quote from: KerryBWhite on April 30, 2020, 08:11:55 PM
Currently on ebay
https://www.ebay.com/itm/383525080202
Talk about ser·en·dip·i·ty . ;D
Quote from: shelbydoug on April 30, 2020, 05:46:22 PM
Quote from: gt350hr on April 30, 2020, 05:24:03 PM
Cory ,
That is a "newer" version than mine. Mine has the fins going front to back and has two COBRA logos ( similar to a '65 intake) in between the outer fins on each side.
Randy
The one I had seen has the COBRA on the sides.
That is the one I think seeing at one time, but also Cory's. The double small lettered pans-- on ebay and as described by Rusty are new to me. The one on ebay not being machined has my spidey senses going off-- bad casting, discarded before machining? Mating surfaces too thin?... the small innocuous (almost hidden) "COBRA" .... dont know... (even knowing wjo was behind the original castings)
I would like a finned pan on the car at the least; COBRA lettered on the sides a definite plus...
Come to think about it I wounder about macining my own with the intertwined CS on the sides with the C and S ends extended out as two side fins with 1 or 2 to balance?...
Quote from: gt350hr on April 30, 2020, 05:24:03 PM
Cory ,
That is a "newer" version than mine. Mine has the fins going front to back and has two COBRA logos ( similar to a '65 intake) in between the outer fins on each side.
Randy
Less than ten cast alum Cobra C4 deep pans (like Cory's) were made in the late 70's to early 80's. So, they are nearly 40 years old. As Randy said, the pans came with a steel bolt on extension to place a Chrysler Torq filter close to the bottom of the pan. The COBRA script was done to compliment the COBRA script on the engine oil pan. Very heavy 356-T6 casting (think bubba with a floor jack).
Quote from: KerryBWhite on April 30, 2020, 08:11:55 PM
Currently on ebay
https://www.ebay.com/itm/383525080202
What's funny to me is after looking closely at this person's auction pics and knowing what's currently available on different avenues, is this person to me seemingly pieced this "cobra" C4 pan together.
As an example, Craig Conley sells on eBay this "cobra" emblem practically identical to what's on an early Cobra or GT350 manifold. (I'm not picking on C Conley as this piece is available from a number of vendors, it just my example).
The person selling the pan, again to me looks like the similar pieces were fitted and attached (looks like tiny tig welds)/ tacked to a cheap cast pan, then painted. Look at my last attached close up pic. Doesn't that look like a seam? The emblem is raised and attached to the sides of the fins, and they're not even. Then painted ... pretty funny. It's guys and parts like this one needs to watch for.
Cheers,
~Earl J
Quote from: KerryBWhite on April 30, 2020, 08:11:55 PM
Currently on ebay
https://www.ebay.com/itm/383525080202
That is exactly what I have. The number inside is the B&M part number. IIRC these were made at Buddy Barr in the 80's for Craig. I don't think he ever advertised them for sale. Mine too was un machined when I got it from Craig except on the gasket surface.
They are NOT SAI parts but are cool as hell.
Randy
Hopefully, NOBODY, will EVER think any of the are from SAI. They are ALL someone else's imaginative creation to satisfy some inner designer/engineer, or market void. I leave this as a marker for anyone stumbling on this thread and coming away misinformed.
Quote from: SFM5S000 on May 01, 2020, 09:33:25 AM
Quote from: KerryBWhite on April 30, 2020, 08:11:55 PM
Currently on ebay
https://www.ebay.com/itm/383525080202
What's funny to me is after looking closely at this person's auction pics and knowing what's currently available on different avenues, is this person to me seemingly pieced this "cobra" C4 pan together.
As an example, Craig Conley sells on eBay this "cobra" emblem practically identical to what's on an early Cobra or GT350 manifold. (I'm not picking on C Conley as this piece is available from a number of vendors, it just my example).
The person selling the pan, again to me looks like the similar pieces were fitted and attached (looks like tiny tig welds)/ tacked to a cheap cast pan, then painted. Look at my last attached close up pic. Doesn't that look like a seam? The emblem is raised and attached to the sides of the fins, and they're not even. Then painted ... pretty funny. It's guys and parts like this one needs to watch for.
Cheers,
~Earl J
Earl, FYI Craig made those Cobra intake letters (notice the notch on the end like genuine) so that vintage racers could weld them to intake . After getting rid of OEM mfg trademark the racers would weld the Cobra trademark on so as to comply with vintage regulations that allowed a Cobra marked intake on a GT350. The scrutineers would only look for "Cobra" even if on a Edelbrock single plane torker intake and "most " of the time let it pass. Also the intake one is much bigger the the one in between the fins of the pan on ebay.
Funny you should mention that Bob. I have a Vic Jr done by Dave Dralle( rip) with the COBRA "grafted" onto #1 runner. It took about two seconds to be "outlawed" at a vintage race. Dave "just happened to have" a dual plane at the track so his customer WAS able to race after re inspection LOL.
Randy
I too remember when Jack Schroll tried to get away with a cobra emblem welded onto the first gen Edelbrock Torker. He got it past a couple races but was eventually caught. His more recent busts involved fireworks...
~E
Quote from: SFM5S000 on May 01, 2020, 01:20:47 PM
I too remember when Jack Schroll tried to get away with a cobra emblem welded onto the first gen Edelbrock Torker. He got it past a couple races but was eventually caught. His more recent busts involved fireworks...
~E
Jack Schroll was the first person I knew of that did that.
My lips are sealed but Jack could have raced with a 2bbl and won.
Quote from: gt350hr on May 01, 2020, 03:34:57 PM
My lips are sealed but Jack could have raced with a 2bbl and won.
Hello Randy,
We used to go and watch the vintage races in Steamboat Springs, Colorado over the Labor Day weekend back in the 80s and 90s. Jack brought his '66 GT350 (SFM6S830?) out here to race for a lot of those years. That car of his was extremely well prepped (borderline legal) and driven extremely well. I hung out around Jack's trailer quite a bit during those weekends and spoke to him at length. I believe that he only won that race in 1991, but he was always in the top 3 unless the car broke. I believe he broke an axle right before the start of the feature race in 1994. He and that car were awfully fast and great fun to watch. The last race at Steamboat was in 1998. Bill Murray won that race driving CSX3274. I really miss those races.
Thanks,
Eric
It was always about what the rules "didn't" say.
Quote from: gt350hr on May 04, 2020, 12:39:53 PM
It was always about what the rules "didn't" say.
Hello Randy,
Yes. There were a lot of interesting modifications done to that car, and I am sure that I did not see them all. I loved watching that car show its tail end to most of the Corvettes (big and small blocks).
Thanks,
Eric
Cory, my COBRA C-4 trany pan looks the same as yours, but without the red paint. No manufacturer's casting mark found on it.
It also appears that this C-4 pan didn't have the "B" in COBRA cast as deeply as the one in your photo. See the difference?