383 VS 396!
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 767
Likes: 0
From: Naval Station Guantanamo Bay Cuba N/A
383 VS 396!
I pretty much get the point that a 383 is an overbored .030 350 with some block modifications and a 400 crank. What i dont understand is the 396. As in what is done to produce one and is it considered a big block. How much is the block bored out for that type of stroker, Do you still utilize a 400 crank? Both require complete balancing of the rotating assembly right? What else has to be done for this type of project to work?
Advanced
Joined: Sep 2002
Posts: 62
Likes: 0
From: Demistan
Re: 383 VS 396! (sharkthehunter77)
A 396 is stroker with 3.875" stroke(400 is 3.75) and 4.040 bore.
If you bore it to 4.060 you'll get 401 :thumbs: and it's not a big block, simply because you are using a small block chevy BLOCK !
Of course since you are using new pistons,rods, and crank you have to get the rotating assemply balanced .
:seeya
Pro
Joined: Mar 2002
Posts: 511
Likes: 0
From: St. Louis MO
Re: 383 VS 396! (sharkthehunter77)
Are you trying to stroke a small block out to 396 or are you wanting to build a big block 396. There is a difference.
To make a 396 out of a small block your looking at a 4.1" bore (+.100) with a 3.75" stroke (400 crank).
Factory 396 Big Blocks use a 4.09 bore and a 3.76" stroke crank.
If you plan on building a motor with a butt load of torque and the potiential to hit the high r's I suggest the Big Block 396 over the stroker small block. But then I am kinda partial to a Big Block.
383 kits for the small block are readily avaiable and are much easier to come by than the 396 kits and the 396 big blocks are getting harder and more expensive by the day. The 383's can make just as much power as a lot of big blocks out there and I doubt you'd see that much difference between the 383 and 396 small block stroker motors
To make a 396 out of a small block your looking at a 4.1" bore (+.100) with a 3.75" stroke (400 crank).
Factory 396 Big Blocks use a 4.09 bore and a 3.76" stroke crank.
If you plan on building a motor with a butt load of torque and the potiential to hit the high r's I suggest the Big Block 396 over the stroker small block. But then I am kinda partial to a Big Block.
383 kits for the small block are readily avaiable and are much easier to come by than the 396 kits and the 396 big blocks are getting harder and more expensive by the day. The 383's can make just as much power as a lot of big blocks out there and I doubt you'd see that much difference between the 383 and 396 small block stroker motors
Advanced
Joined: Sep 2002
Posts: 62
Likes: 0
From: Demistan
Re: 383 VS 396! (sharkthehunter77)
What else has to be done for this type of project to work?
I didn't read about any 3.875 cank that requires external balancing(like a 400), but if so you'll need a flywheel and balancer of a 400 .
And yes, you'll need to heavily notch the block to clear that loooong stroke !
Advanced
Joined: Sep 2002
Posts: 62
Likes: 0
From: Demistan
Re: 383 VS 396! (442olds)
Are you trying to stroke a small block out to 396 or are you wanting to build a big block 396. There is a difference.
To make a 396 out of a small block your looking at a 4.1" bore (+.100) with a 3.75" stroke (400 crank).
Factory 396 Big Blocks use a 4.09 bore and a 3.76" stroke crank.
If you plan on building a motor with a butt load of torque and the potiential to hit the high r's I suggest the Big Block 396 over the stroker small block. But then I am kinda partial to a Big Block.
383 kits for the small block are readily avaiable and are much easier to come by than the 396 kits and the 396 big blocks are getting harder and more expensive by the day. The 383's can make just as much power as a lot of big blocks out there and I doubt you'd see that much difference between the 383 and 396 small block stroker motors
To make a 396 out of a small block your looking at a 4.1" bore (+.100) with a 3.75" stroke (400 crank).
Factory 396 Big Blocks use a 4.09 bore and a 3.76" stroke crank.
If you plan on building a motor with a butt load of torque and the potiential to hit the high r's I suggest the Big Block 396 over the stroker small block. But then I am kinda partial to a Big Block.
383 kits for the small block are readily avaiable and are much easier to come by than the 396 kits and the 396 big blocks are getting harder and more expensive by the day. The 383's can make just as much power as a lot of big blocks out there and I doubt you'd see that much difference between the 383 and 396 small block stroker motors
:blueangel:
Please when the last time you saw someone doing a 396 BBC stroker !
I prefer the small block due to the weight saving -I think about 200 lb.
4.1" bore = aftermarket block = BIG $$$$$$ :seeya
Instructor
Joined: Jan 2003
Posts: 222
Likes: 0
From: Ventura CA
Re: 383 VS 396! (2BAD)
:blueangel:
Please when the last time you saw someone doing a 396 BBC stroker !
I prefer the small block due to the weight saving -I think about 200 lb.
4.1" bore = aftermarket block = BIG $$$$$$ :seeya
Please when the last time you saw someone doing a 396 BBC stroker !
I prefer the small block due to the weight saving -I think about 200 lb.
4.1" bore = aftermarket block = BIG $$$$$$ :seeya
Just my opinion, but it seems if you're going to use a 400 stroke, then bore your 350 block out to within .025 of a 400 bore, spend lots of money, and end up within 4 inches of a 400, why didn't you just build a 400? they're not all that hard to find, and big main journals seems like a good idea as well as siamese bores that give you more than a paperswidth of cylinder wall.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Drifting
Joined: Jun 2001
Posts: 1,809
Likes: 0
Re: 383 VS 396! (Jeff 6T9)
Sharkthehunter77; haven't checked the price of stroker kits latley but it seemed like the 383 & 396 kit were about the same.
Jeff6T9; yea isn't that killer and a 2 year warranty, them boys must really be confident to offer a warrant on a 600 hp engine (think that's what it was)
Although theres something about a sb 427 that tickles me too. :D :cheers:
[Modified by Tominator, 3:53 PM 6/3/2003]
Jeff6T9; yea isn't that killer and a 2 year warranty, them boys must really be confident to offer a warrant on a 600 hp engine (think that's what it was)
Although theres something about a sb 427 that tickles me too. :D :cheers:
[Modified by Tominator, 3:53 PM 6/3/2003]
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: 383 VS 396! (Jeff 6T9)
It cost the same to build a 396 ci small block (4.030X3.875) as a 383 ci (4.030X3.75)
IMO the 396 is the only way to go. Don't even think in terms of 400 crank in a 350 block and bore that was 20 years technology. You can buy all quality parts in kit's depending on how thick your wallet is.
Another alternative is the 408 ci 4.030X4.00. One of the guys here on the forum owns a ATI centrifical blower one that dynos at over 600 RWHP.
I have built a few stroker motors and that's all I'll ever build again.
IMO the 396 is the only way to go. Don't even think in terms of 400 crank in a 350 block and bore that was 20 years technology. You can buy all quality parts in kit's depending on how thick your wallet is.
Another alternative is the 408 ci 4.030X4.00. One of the guys here on the forum owns a ATI centrifical blower one that dynos at over 600 RWHP.
I have built a few stroker motors and that's all I'll ever build again.
Drifting
Joined: Jun 2001
Posts: 1,809
Likes: 0
Re: 383 VS 396! (gkull)
It cost the same to build a 396 ci small block (4.030X3.875) as a 383 ci (4.030X3.75)
IMO the 396 is the only way to go. Don't even think in terms of 400 crank in a 350 block and bore that was 20 years technology. You can buy all quality parts in kit's depending on how thick your wallet is.
Another alternative is the 408 ci 4.030X4.00. One of the guys here on the forum owns a ATI centrifical blower one that dynos at over 600 RWHP.
I have built a few stroker motors and that's all I'll ever build again.
IMO the 396 is the only way to go. Don't even think in terms of 400 crank in a 350 block and bore that was 20 years technology. You can buy all quality parts in kit's depending on how thick your wallet is.
Another alternative is the 408 ci 4.030X4.00. One of the guys here on the forum owns a ATI centrifical blower one that dynos at over 600 RWHP.
I have built a few stroker motors and that's all I'll ever build again.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: 383 VS 396! (Tominator)
How do I say it? Read my lips! Another alternative is the 408 ci 4.030X4.00.
4 inch stroke in 350 blocks requires epoxy filled lower block in the water jackets and splayed caps to hold the bottom of the motor together. Personaly I would not make one although I've considered it.
4 inch stroke in 350 blocks requires epoxy filled lower block in the water jackets and splayed caps to hold the bottom of the motor together. Personaly I would not make one although I've considered it.
Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
Re: 383 VS 396! (gkull)
or just go for the gusto and get a dart iron eagle block and build a small block 481 :yesnod: :D
http://www.speedomotive.com/SB%20CHE...RANK%20KIT.htm
http://www.speedomotive.com/SB%20CHE...RANK%20KIT.htm
Le Mans Master
Joined: May 2000
Posts: 6,493
Likes: 6
From: Bloomington MN
Cruise-In II Veteran
Re: 383 VS 396! (Jeff 6T9)
not to hijack, but did anybody else see the World Products 454 small block in this month's Hot Rod magazine? :cool:
AC
Pro
Joined: Jul 2001
Posts: 660
Likes: 0
From: Pleasant Valley MO
Re: 383 VS 396! (ry)
I have a 421 small block stroker, and lots of machine work and lots of grinding to make the long rods clear the block. I have around $4500 in mine, That top to bottom, since I did most of the work myself. The lower end, crank, rods, and pistons, cost the bucks, plus the machine work.
:cheers: Larry
:cheers: Larry
