[sb72elcamino350]

Hello,

I want to build a new motor but I am not sure what I should build. They both sound great. I like the torque of the 383 but the high reving of the 377. It is going into a 1972 El Camino with a th350 and with a 12 bolt posi and 4.10 gears right now. I do not mind putting lower gears in like 4.56 if I build a 377. It is going to be mostly race with some street driving on the weekends. Which do you think would be better?

Thanks

[firechicken383]

Personally, Id do the 383 because of the car and the auto. And its gonna be a street/strip vehicle, right?

[camaro409]

Make the 383 then sell me your 400 block don't destroke the 400 though..the 400 has the same amount or more torque then the 383 if built right...Don't let the all the cooling trash talk fool ya

[Sandflea427SS]

build whatever you have at hand...if you have cubic dollars then go forth my son and build megapower!!!!

[406 ss monte]

build a 406 or 383, either way you don't have to turn them as hard to make power which would help keep from breaking parts. if you want to be real different, put a 327 crank in the 400 block & make a mega rpm screamer.

[Sandflea427SS]

ahhh a 347....or .030 over 353.....
screamer, but is as accepted as the Olds 403
this is flat torque curve country boy !!!!

[sb72elcamino350]

Yes it is going to be a street/strip. I don't know what to do grrrrrr. I love torque but I also love reving. Grrrrrr

thanks

[sb72elcamino350]

Is there anything special to build a 406 besides the normal like bored and stuff like that?

[406 ss monte]

just do to the 406 the same as you would a 377, the only real difference's would be you could use a little more cam in the 406, & the other would be the way they balance differently (internal v/s external). use at least a 5.7 rod (350). i ran 327's for years (7,500 rpm), then i built a 406. their different, but damn at the torque you gain. it gets my 3,500 lbs monte moven quick.

[instigator10]

If you build a 406 make sure you use 5.7 rods and a good cam. 4 bolt main 400's are weaker than 2 bolts.I'm building a 406 also . A well built 406 will get in the 11's. Good luck

[F-BIRD'88]

383's are like *** holes and cowboy hats. Everyones got one.

How about doing a 7000+rpm capable street solid lifter cammed supercharged 350. More rpm and more real power.
Your 4.10's should be just about right.
It's a straight forward 355ci build using cost effective off the shelf parts easy combo and very streetable 600++hp very near 600ft/lbs torque with all the rpm you can handle for the price of a 500hp 383. A supercharged motor gives you Way more of what you want. Torque, power and rpm. Especially at higher altitudes where the air is less dense.

Nothings more impressive than a lil supercharger scoop pokin' out of the hood.