Sbc 377??
Sbc 377?? I've been hearing about this 377 sbc from a few different people and I was just wondering how you make 377ci?? Is it a stroker crank, or bigger bore? And what are the 377ci engines good for? Like low end torque, or power? Can they rev high? Basically I would like to know the advantages/ disadvantages of a 377ci SBC and how to build one. Thanks!
Std bore 350 with 400 crank or the 400 block with a 350 crank, the 400 block is the highly populaer version and it is a high revver, not huge on low end torque a high end screamer though.
So its basically a destroked 400? Thats kind of a cool twist. So you think a 377 with a strong bottom end and valvetrain, could hit 7500rpm and have some good mid range torque? I want to build one now! Is there any possible way to build an LSX 377??
I had a 377 mine was a 4.145 bore with a 3.50 stroke and a 6" rod. They can rev high and are mainly built for midrange and high rpm power. It can easily rev to 7,500 with the appropriate cam and valve train.
My 377 was 13-1 compression, AFR 210 heads, ultradyne roller, edelbrock super victor single plane, 950 holley HP carb, MSD 7-AL3 ignition, hooker headers and maxflow mufflers. I ran a .020 over 400 block with splayed caps. My 1st cam was a 256/263@.050 .638/.638 on a 106, then I swapped to a nitrous cam 270/284 .660 lift on a 114
Mine was built as a street strip car, I ran a TH400 rmvb T/B art carr trans and 9" 4,500 stall converter. It went low 10's on motor and went 9's on nitrous with an annular fogger.
It would have went faster but I ran a way bigger tire than I needed for a pro street look 33x16.5 and needed more gear and stall. Great motor never had an issue for over 2 - 3 years of street driving and track time.
Here is a photo. I built the motor and car in the garage, my first serious street strip car and I think the 377 was great.
My 377 was 13-1 compression, AFR 210 heads, ultradyne roller, edelbrock super victor single plane, 950 holley HP carb, MSD 7-AL3 ignition, hooker headers and maxflow mufflers. I ran a .020 over 400 block with splayed caps. My 1st cam was a 256/263@.050 .638/.638 on a 106, then I swapped to a nitrous cam 270/284 .660 lift on a 114
Mine was built as a street strip car, I ran a TH400 rmvb T/B art carr trans and 9" 4,500 stall converter. It went low 10's on motor and went 9's on nitrous with an annular fogger.
It would have went faster but I ran a way bigger tire than I needed for a pro street look 33x16.5 and needed more gear and stall. Great motor never had an issue for over 2 - 3 years of street driving and track time.
Here is a photo. I built the motor and car in the garage, my first serious street strip car and I think the 377 was great.
The pistons wouldn't be the same either since you're adding or decreasing stroke.
You can use 5.7 rods in a 350 or 400 with the appropriate pistons.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Hey Ragen, do you know if they sell an aftermarket crank with the correct size journals so I dont have to use bearing spacers? And was that a solid roller cam you were running? Did it run better with the nitrous cam or the n/a cam? What did you shift yours at and what kind of power did you make n/a?
Hey Ragen, do you know if they sell an aftermarket crank with the correct size journals so I dont have to use bearing spacers? And was that a solid roller cam you were running? Did it run better with the nitrous cam or the n/a cam? What did you shift yours at and what kind of power did you make n/a?
2. Yes, it was an ultradyne solid roller, the 1st cam was just a more mild N/A cam 256/263 .638 lift on a 106 lobe I shifted it at 7,200. I went faster on the nitrous cam on the nitrous than I did with nitrous on the motor cam, the nitrous cam was also bigger, 270/284 660 lift on a 114.
3. I don't know how much power it made, never dynoed it, but I went as fast as 10.30's @128 mph on motor with the smaller cam, which should be around 520 hp, it would have made more with a bigger roller, but I street drove it a lot and would have needed more gear and more converter.
With the bigger nitrous cam I picked up on the nitrous running 9.30's with a best mph of 140. My car would have went faster but I had way more tire than I needed which slowed me down a bit 33x16.5s
Last edited by RAGENZ28; May 26, 2008 at 10:43 AM.
