514 stroker kit question
New User
Joined: Jun 2010
Posts: 5
Likes: 0
am i correct in assuming that a 429 will turn more rpms than a 460 becaus eof hte shorter stroke? i really dont want to spend an additional 12k more like 5k is my budget so i really dont want to change the heads unless i m going to get big gains from it i would really like to buy a good cam and pistons and roller the lifters and rockers. i think that would get 450 hp but i dunno 450 from a almost stock 429 is that realistic?
Lead Driver
Joined: Mar 2004
Posts: 8,924
Likes: 153
am i correct in assuming that a 429 will turn more rpms than a 460 becaus eof hte shorter stroke? i really dont want to spend an additional 12k more like 5k is my budget so i really dont want to change the heads unless i m going to get big gains from it i would really like to buy a good cam and pistons and roller the lifters and rockers. i think that would get 450 hp but i dunno 450 from a almost stock 429 is that realistic?
Lead Driver
Joined: Mar 2010
Posts: 5,250
Likes: 11
From: West Virginia
In theory, a 429 would be capable of higher RPM's, yes. Engines with a "square" ratio of bore to stroke are the most well balanced and will usually spin the fastest.
However, the larger displacement bore/stroke will generally yield more area "under the curve."
This is desireable for a heavy truck application. The higher rpm's would be better for a drag type motor.
This is all in theory. In reality, I think anything but an expensive build with all balanced and forged internals will be limited to the same redline. You can get edelbrock heads for about $1200 which is pretty reasonable and I've seen them make something like 30-40 hp in some dyno comparisons online. You can port and polish your own heads or pay someone to do them pretty cheaply and pick up a lot of the gains of aftermarket heads, too. That will save you some coin.
I'd place getting good heads on there before stroking or boring the motor. I think you'll see bigger gains from the same amount of money.
However, the larger displacement bore/stroke will generally yield more area "under the curve."
This is desireable for a heavy truck application. The higher rpm's would be better for a drag type motor.
This is all in theory. In reality, I think anything but an expensive build with all balanced and forged internals will be limited to the same redline. You can get edelbrock heads for about $1200 which is pretty reasonable and I've seen them make something like 30-40 hp in some dyno comparisons online. You can port and polish your own heads or pay someone to do them pretty cheaply and pick up a lot of the gains of aftermarket heads, too. That will save you some coin.
I'd place getting good heads on there before stroking or boring the motor. I think you'll see bigger gains from the same amount of money.
Thread
Thread Starter
Forum
Replies
Last Post
Boostcrazy99
1999 - 2016 Super Duty
29
Aug 15, 2016 11:56 AM
4x4man514
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
0
Apr 11, 2016 08:56 PM
vettman
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
4
Jul 24, 2011 12:40 PM
shadow_almanza
1973 - 1979 F-100 & Larger F-Series Trucks
14
Mar 2, 2011 07:41 PM
shadow_almanza
Performance & General Engine Building
23
Jan 7, 2011 02:51 AM
