352 - 390 rods? C1AE-A????

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Jan 17, 2004 | 02:22 PM

ceetwarrior

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From: Colorado

352 - 390 rods? C1AE-A????

Does anyone know if C1AE-A is a 352 rod or a 390 rod?

I was told that when I got a 390 crank for my 352 that I will need "390 rods" because they are shorter. Is this true??

So, I went by that. I bought new rods from my machinist that were supposed to be "390 rods" but I just found out they have the same part # as the rods that came out of my 352 which were C1AE-A.

So, If I have a 390 crank with the longer 352 rods, will that raise my compression since its going up farther?

Any help would be awesome. Thanks

Jan 17, 2004 | 03:00 PM

Ratsmoker

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From: Missouri

I beleive all the -A rods are the long 332/352/360 rods and the -B and -C are the 390/427/428 rods. I don't have my book on me right now. Compression will go up but you need to make sure the piston stays below the deck.

Jan 17, 2004 | 03:45 PM

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From: Brea CA

Yeah I'm away from all my resource material but I believe those are the long rods. Hey, I've heard quite a few folks using them to raise compression but like Ratsmoker said the piston has to stay in the block, worst case run them .010" out of the hole.

And if you do run them that high, check your valve clearance especially if the cam is aggressive, you might have to cut the reliefs deeper. Don't let the CR go above 10.0:1

Last edited by BB; Jan 17, 2004 at 03:51 PM.

Jan 17, 2004 | 04:40 PM

d44hd

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From: Maple Ridge BC Canada

The rods you have are indeed the long 352/360 rod..If you used them you would be above the deck about .040.if you used a stock piston.you could machine down the pistons,but you would be better off with the short rods as they are quite a bit beefier

Jan 17, 2004 | 05:02 PM

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From: Brea CA

Thanks d44hd I just noticed he's building a 352.

Ceetwarrier, where ya getting pistons for that?

Jan 17, 2004 | 08:31 PM

rusty70f100

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From: Iowa

The big determining factor if you can use long rods is the compression height of the pistons. If you use 1.680" compression height pistons with the long rods, you will end up 0.06" in the hole.

Jan 17, 2004 | 10:59 PM

ceetwarrior

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From: Colorado

Guys, I don't know what rods are in the truck, but I was reading my auto machine receipt and found it said "Rods C1AE-A $96". So, thats what I'm going by. Whichever rods are in the truck work fine but I was just wanting to know. I'm using a stock-type .030 non-flattop piston. This is confusing.... eek. Maybe this whole thing is just the machinists error on paper not partswise.

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Apr 7, 2004 | 12:30 PM

scamardo

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From: Charlotte

Should have a 2U cast on one of the crank weights or whatever you call it. Sorry, still learning but that is how I knew mine was a 390. Pull the pan, look towards the front.

Apr 7, 2004 | 03:00 PM

#10

ceetwarrior

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From: Colorado

What about a 352? What will it say?

Apr 7, 2004 | 07:19 PM

#11

scamardo

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From: Charlotte

Well, depending on the year, it should say C?AE-A, B, D or E. There were quite a few castings. If it was a 58, it would say EDD or a 59 would be 5752420.

Apr 15, 2004 | 09:30 AM

#12

ceetwarrior

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From: Colorado

I went out and looked at my old 352 crank. The ONLY marking that I could find is a "6" on one of the counterbalancers towards the front of it. So, is this what all 352's say?