Internal or External 383 stroker kit?
Drifting
Joined: Aug 2005
Posts: 1,682
Likes: 3
From: League City TX
The 454 is of course still in production. If you want a current sbc example, just look to the zz383.
I realize you didnt use the word garbage, but you did say it was asking for trouble.
I didn't think exact wording was such a big deal.
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
I didnt say SBC, I said engines. The 400 & 454 were both introduced in 1970.
The 454 is of course still in production. If you want a current sbc example, just look to the zz383.
I realize you didnt use the word garbage, but you did say it was asking for trouble.
I didn't think exact wording was such a big deal.
The 454 is of course still in production. If you want a current sbc example, just look to the zz383.
I realize you didnt use the word garbage, but you did say it was asking for trouble.
I didn't think exact wording was such a big deal.
just look to the zz383
This thread was about 383's not 454's but if in case you didn't know the 454 uses a much larger snout then the SBC.
Last edited by BLOCKMAN; Dec 28, 2011 at 04:27 PM.
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
It's just a matter of what's right for the application. I think it's the absolutes - either way - that get people riled up.
Drifting
Joined: Aug 2005
Posts: 1,682
Likes: 3
From: League City TX
You can take a look at one here - http://www.race-mart.com/GM_Performa...-12498008.html
From what I'm reading, that's an externally balanced piece.
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Don't understand why this subject gets so out of hand but it does. The Truth of this internal external argument is that there is really two reasons why internal balance is better!
(1) is the ease of replacing clutches and such and still be able to balance them to work in the engine and the cost savings in some cases in not buying external balance parts, though the added cost of internal balancing may off set this some.
(2) is the additional dollars a shop gets for this work and for some people to have another BENCH racing thing to talk about!!
(1) is the ease of replacing clutches and such and still be able to balance them to work in the engine and the cost savings in some cases in not buying external balance parts, though the added cost of internal balancing may off set this some.
(2) is the additional dollars a shop gets for this work and for some people to have another BENCH racing thing to talk about!!
I have seen alot of guys drag in an internally balanced rotator with their neutral balanced flywheel and balancer only to have to charge them for new externally balanced flywheel and balancer which is good for me but not the customer plus extra money to push the balancer on and put on the flywheel. Then you have to strip everything off and polish the crank as the cast cranks have never been polished but have a grind finish!!!!!
So I make out pretty good and the customer has to spend extra money LOL!!!
An externally balanced SBC on the front is more of a weak link compared to an internally balanced rotator plus external is more costly for the consumer
Burning Brakes
Joined: May 2009
Posts: 1,232
Likes: 6
From: Tucson AZ
St. Jude Donor '12
For me the decision to spend extra $ stronger parts or better build techniques boils down to how much I'll have to worry every time I put my foot in it. When I know the engine, trans, and driveline are up to the task of taking the torque my engine will produce and the engine is tight through the rpm range, then I can straighten my right leg and smile at the same time.
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Are you sure about that? The balancer part number for the engine is 1249800.
You can take a look at one here - http://www.race-mart.com/GM_Performa...-12498008.html
From what I'm reading, that's an externally balanced piece.
You can take a look at one here - http://www.race-mart.com/GM_Performa...-12498008.html
From what I'm reading, that's an externally balanced piece.
I doubt its been made for the last 40 years!!!!!
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Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
The issue I see is that the weight on internal balanced engine is bearinged on both sides of the counter weight. On the external the counter weight has the additional weight beyond number 1 and 5 main bearing. These weights, number 1 more than 5 are forward unsupported.
Balanced well both will work. I think at higher Rs the internal will last longer maybe. They are engines and by there nature will fail. Just do the best you can aford, to make that point in time later more than sooner.
Longer rods do as Blockman says. I think there is a point when extreemly long can reduce a life span also.
Balanced well both will work. I think at higher Rs the internal will last longer maybe. They are engines and by there nature will fail. Just do the best you can aford, to make that point in time later more than sooner.
Longer rods do as Blockman says. I think there is a point when extreemly long can reduce a life span also.
