429 I.D.
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5th Wheeling
Joined: Oct 2010
Posts: 28
Likes: 1
From: Utah
429 I.D.
I have a 429 engine. It has C8VE-E on the heads, and a factory four barrel. I checked the stroke and its 3.59 so I definately have a 429 but I dont know which one, or how many HP it came with from the factory. Can someone help me. Thanks
Elder User
Joined: Aug 2001
Posts: 942
Likes: 0
From: South Texas
Depends on the pistons/block. Later blocks had a slightly taller deck height so it affects CR somewhat also.
Original 68 429's had flat top pistons. around 10.5:1 compression ratio and were rated at 360 HP. C8 heads were small chamber, around 77CC's. I have 2 sets of C8's and 1 set DOVE's and all are NEARLY identical.
If someone rebuilt it, put in dished pistons to drop the CR down then HP would be less.
Original 68 429's had flat top pistons. around 10.5:1 compression ratio and were rated at 360 HP. C8 heads were small chamber, around 77CC's. I have 2 sets of C8's and 1 set DOVE's and all are NEARLY identical.
If someone rebuilt it, put in dished pistons to drop the CR down then HP would be less.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Depends on the pistons/block. Later blocks had a slightly taller deck height so it affects CR somewhat also.
Original 68 429's had flat top pistons. around 10.5:1 compression ratio and were rated at 360 HP. C8 heads were small chamber, around 77CC's. I have 2 sets of C8's and 1 set DOVE's and all are NEARLY identical.
If someone rebuilt it, put in dished pistons to drop the CR down then HP would be less.
Original 68 429's had flat top pistons. around 10.5:1 compression ratio and were rated at 360 HP. C8 heads were small chamber, around 77CC's. I have 2 sets of C8's and 1 set DOVE's and all are NEARLY identical.
If someone rebuilt it, put in dished pistons to drop the CR down then HP would be less.
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
They were ACTUALLY the same compression ratio.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Then why quote two different compression numbers if they were the same? The FE engines had different compression ratios for the 4V and the 2V so why not he 429?
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Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
FE engines used different heads for different applications. 385 series engines didn't use different heads for any of the standard 429/460 engines within any given year. (obviously the boss and CJ/SCJ are the exception to that)
They are the same.
They are the same.
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