330 rod width?
#1
330 rod width?
Could anyone tell me the width of a 330 rod at the crank journal?
I kept one rod and piston for my rebuild and for the life of me can't find them!😞
Trying to use 6" SBC rods and 4.00 pistons instead.
I kept one rod and piston for my rebuild and for the life of me can't find them!😞
Trying to use 6" SBC rods and 4.00 pistons instead.
#6
You tell me, brother!
From what I have read, you have done this before. I am open to ideas.
I wanted the same 6" length rods, but it seems I have to go a little longer with LS rods. Looks like 6.1250" ?
Pistons? Good question. 4.0" bore and forged so far.
Stock 330 has a 9.33" deck height, and stock assembly is 9.3075" ?
That makes the stock deck clearance at -.00225.
So my new compression height for my pistons needs to be 1.49" to keep the same deck clearance?
Problem is they dont make any pistons with that, do they?
From what I have read, you have done this before. I am open to ideas.
I wanted the same 6" length rods, but it seems I have to go a little longer with LS rods. Looks like 6.1250" ?
Pistons? Good question. 4.0" bore and forged so far.
Stock 330 has a 9.33" deck height, and stock assembly is 9.3075" ?
That makes the stock deck clearance at -.00225.
So my new compression height for my pistons needs to be 1.49" to keep the same deck clearance?
Problem is they dont make any pistons with that, do they?
#8
#9
Rocket V8 - a better combo would be using a 6.125 rod with a 1.425cd piston. I'm doing one now and that rod is available as a centered one.
#10
We did a small number of SBC builds with the 6.000" Olds conn rods. No crank work, there were rod brgs available back then to make it a bolt-together deal.
They were known as "conversion" brgs, came in Std, .001", .010", and .020", and the "domed" pistons utilized the .980" pressed pins.
Thanks, Gary in N.Y.
P.S. The pistons (cast only) were available as a stocking part number. I may have a set on the shelf still, not sure??
#11
No, not off the shelf that I know of. However you can do the 6.200 rod with a 1.425 cd piston. Only thing is they don't make a centered rod in that length so you'll need to mill .050 or so off one side of the pin end depending on what piston you use. You can use offset rods, it's just easier if you can get a centered one.
Rocket V8 - a better combo would be using a 6.125 rod with a 1.425cd piston. I'm doing one now and that rod is available as a centered one.
Rocket V8 - a better combo would be using a 6.125 rod with a 1.425cd piston. I'm doing one now and that rod is available as a centered one.
However, many stout engines have been built with offset rods - is it really a big deal? Has anyone taken one apart and found anything bad?
#12
I started building my engine 10 years ago and didn't know about LS rods at the time. The parts I used fit my goals and budget but I agree - if you can use a centered rod you should do it! It's just good engineering.
However, many stout engines have been built with offset rods - is it really a big deal? Has anyone taken one apart and found anything bad?
However, many stout engines have been built with offset rods - is it really a big deal? Has anyone taken one apart and found anything bad?
H beam CRS6200O3D 6.2"
ForgedPistons 4.0" bore :
ICON IC9226 1.433" CH 18cc Dish
8.64:1 CR
DSS 8123X 1.425" CH 16cc Dish
8.66:1 CR
Should I go as close as possible to zero deck or not?
I am trying to stay close to 8.5:1 CR for the blower.
Thanks for all the advice so far!
#13
I zero decked my block to get good quench with a 0.040" gasket. I know the effects of quench are debated but I figured if I can get it why not? My pistons have D-shaped dishes that correspond well with the Olds head "quench pads".
Thread
Thread Starter
Forum
Replies
Last Post
stlbluesbrother
Cutlass
19
December 24th, 2009 05:47 AM