429 history?

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Feb 3, 2016 | 08:14 PM

#1

J ballan

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Fleet Mechanic

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From: Saskatchewan

429 history?

Hello everyone I picked up a parts truck recently that came with a 429. The heads read D0VE-C not sure about the block. I'm sure it came from a car because the frame was notched to clear the car manifolds and it has a huge front sump oil pan. I've read that some of these early 429s had pretty high compression and I'm not sure if I can run it on regular 87 octane pump gas? If not it's not much good to me as I don't want to be buying 90+ octane fuel. Thanks for your help.

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Feb 3, 2016 | 10:10 PM

#2

wtroger

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D0ve-c head are the most desirable of the stock 385 heads on a flattop piston 429 they will make 10.5 -1 compression. So pump gas might be an issue.

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Feb 3, 2016 | 10:29 PM

#3

85e150

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Some of those were 11.3 as OEM. 87...not.

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Feb 3, 2016 | 10:42 PM

#4

wtroger

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The key word is flat top Pistons. CJ engines didn't have flat top Pistons

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Feb 4, 2016 | 07:38 AM

#5

J ballan

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From: Saskatchewan

I'm pretty sure it's not a CJ but I will check the block casting numbers tonight. So that means it has 10.5-1 compression correct?

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Feb 9, 2016 | 04:36 PM

#6

smallello

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I have a 429 from a 1970 LTD. It has D0VE-C heads also. I run it on regular pump gas with no issues.

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Feb 9, 2016 | 05:31 PM

#7

J ballan

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From: Saskatchewan

Quote:

Originally Posted by smallello

I have a 429 from a 1970 LTD. It has D0VE-C heads also. I run it on regular pump gas with no issues.

Thanks for the reply. I've got a good TMyer 400 I'm going to use instead. I'll save the 429 for my mud truck.

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