Budget 383...Is there such a thing?

[beater_k20]

lets let it go ok?

 

[4X4HIGH]

So your mission was to get dirtwarrior banned?

 

[mikey_d05]

You're my idol.

 

[Zeus33rd]

mission accomplished.

Wanna explain yourself? Are you capable?

 

[big83chevy4x4]

trying to steer the train into the same state as the original post...

ive never built a 383, but have thought about it before... why exacty does the rods (and IIRC its the rod bolts and not the rods them selves???) contact the camshaft. i mean you can (i think i never actually done it) put a big cam in a 400 with out touching the rods/rod bolts. and the timing chain is the same so wouldn't the cam and crank be the same distance apart?

also seems like if you took any material off the cam, it would have less area contacting the lifter promoting cam wear. also if you took it off the rods/bolts, it is more likely to break a rod bolt. so do you take a little of both hoping not to have either?

 

[beastofablaze]

More importantly, beater_k20 is gone. I guess I can change my signature now, eh?

not yet... it was only a 3 day...


I just guessing here but probably because chevy engineered the 400 for a 3.875 crank and the 350 for a 3.480.

Does gm really use the same block for all sbc or do they vary slightly from 292 to 400?

 

[HarryH3]

Does gm really use the same block for all sbc or do they vary slightly from 292 to 400?

The 292 was a straight 6.

Small block V8's share the same external dimensions, but some of the internal stuff is different, based on the engine they were building.

 

[beater_k20]

I just guessing here but probably because chevy engineered the 400 for a 3.875 crank and the 350 for a 3.480.

400 doesnt use a 3.875 crank, it uses a 3.75" stroke crank. using a 3.875" crank in a 400 block would create a 415"-427" small block.

 

[blazin_blazer]

400 sbc

has siamesed cylinders....they have 3 freeze plugs as opposed to other small blocks 2....every1 calles these freeze plugs but they are actually hole gm uses to let the sand out of the casting and since cylinders are touching they had to add the center plug to let the sand out...also if you run your hand down the side of a 400 you can feel the radiused humps on the outside of the block where each cylinder is...where as you feel of other sbc blocks they will be straight down the side where these plugs are

 

[4X4HIGH]

they have 3 freeze plugs as opposed to other small blocks 2

Not all 400's have the 3 freeze plugs on the side, most have the same 2 as all the other SBC's.

 

[3 on the tree]

Don't forget about the steam holes drilled tween the center cylinders, only 400 has them.

 

[Corey 78K5]

I have heard that the outer head bolt holes on a 400 are slightly wider or narrower than other SBC. Anyone know if thats true or not?

 

[4X4HIGH]

That would be incorrect as the same casting number head (882) was used on 350 and 400 except that the 400 has the steam holes in them.

 

[beastofablaze]

The 292 was a straight 6.

Small block V8's share the same external dimensions, but some of the internal stuff is different, based on the engine they were building.

your right... i was thinking of the 262.



I'm havin a bad night...

My math says a 4.00" crank in a 400(454) would make a 427 stroker correct?

I understand you can bore it to get 415-427 but don't 400's HATE overbore?

how much overbore would it take to get a 427 with a 3.875" crank?

 

[Z3PR]

I know most of y'all are do it yourselfers, but anymore I just let the machine shop put together the short block. Most machine shops can get a quality stroker kit cheaper then the adveridge joe.

 

[rjfguitar]

Not all 400's have the 3 freeze plugs on the side, most have the same 2 as all the other SBC's.

Yep....my "4" is a 2 plugger...