408 Sbc ?
Thread Starter
NCM Grand Opening Veteran
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
408 Sbc ?
Looking at a 408 stroker. I know the 350 block has to be modded to accept a larger stroke and care must be utilized not to hit the water jackets. Obviously a 408 must be machined more to accept the 4.00 stroke than the 3.75 stroke on a 383. If built & dyno'd by a competant machine shop, is there much danger of popping a water jacket later? I understand that over heating any engine leads to bad results.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Yup they do it with the LSxx blocks all the time, 4 inch crank, ain't too popular with first gereration small blocks, I would talk to a machine shop that has done one or two before 
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I've seen two of those 408's 4 inch strokers and 4.030 bore. In our old style 4 bolt blocks. Both of them used epoxy to fill the lower water jacket area. The 3.875's that I built didn't require that. You end up with about 396 ci.
For just 12 more ci I didn't think that it was worth it.
I'm using a 4 inch stroker in my Motown block. But they are made to take on 4.125 without clearancing anything and 4.250 is just a little grinding.
For just 12 more ci I didn't think that it was worth it.
I'm using a 4 inch stroker in my Motown block. But they are made to take on 4.125 without clearancing anything and 4.250 is just a little grinding.
Thread Starter
NCM Grand Opening Veteran
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
T and L engines regularly builds 408s from Gen 1 SBC. 4" stoke in a .030 over 350=408. Just wondered if they were streching it too much.
Advanced
Joined: Nov 2005
Posts: 83
Likes: 0
Originally Posted by ratflinger
T and L engines regularly builds 408s from Gen 1 SBC. 4" stoke in a .030 over 350=408. Just wondered if they were streching it too much.
I thinks its all forged internals with hp dependent on the cam you choose, but it claims 450-550 hp, all for only $4350
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Burning Brakes
Joined: Jan 2004
Posts: 1,043
Likes: 4
From: Va
T and L built my 383 stroker which I am very happy with, they weren't building the 408's last February 05 otherwise I would have probably gotten one. Lloyd McLeary the owner has been bulidng nascar engines for a long time, he was actually very heavy into Nascar in the mid to late 90's then the Yates, Rousch, Hendrick came along and took all the engine business. He is now getting heavy into the aftermarket engine building. Last year I know T and L was still building engines for Derrick Cope and one other Busch driver.
Their facility near CharlotteN.C. is top notch and my son and I were there when the 383 was dynoed. We were actually lucky enough to have Lloyd build our engine personally and he reworked the AFR195 heads to address the poor oil return and valve seals.
I am confident he will stand behind whatever he builds, he is very much into shaking the engines down on his dyno before he ships them out the door.
Here's a pic of our 383 being dynoed at T and L:
Their facility near CharlotteN.C. is top notch and my son and I were there when the 383 was dynoed. We were actually lucky enough to have Lloyd build our engine personally and he reworked the AFR195 heads to address the poor oil return and valve seals.
I am confident he will stand behind whatever he builds, he is very much into shaking the engines down on his dyno before he ships them out the door.
Here's a pic of our 383 being dynoed at T and L:
Thread Starter
NCM Grand Opening Veteran
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
Originally Posted by MotorHead
450-550HP, they aren't sure whether you are going to get a 450HP or a 550HP motor ?
It's dependant on the cam you choose. JUst shows how much difference a cam change makes when everything is the same.
Thread Starter
NCM Grand Opening Veteran
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
b71vette,
Thanks for the picture. On paper this looks like a class outfit and it's good to know that you were a satisfied customer. I was going to buy a short block & build the top end, but I'm seriously thinking about the 408.
Thanks for the picture. On paper this looks like a class outfit and it's good to know that you were a satisfied customer. I was going to buy a short block & build the top end, but I'm seriously thinking about the 408.
Racer
Joined: Aug 2005
Posts: 435
Likes: 2
From: Boise Idaho
Originally Posted by ljthe2nd
Anybody got a link for T and L?
