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Username Post: Rebuilding small block on a budget        (Topic#355630)
rusty82silverado 
Senior Member
Posts: 200

Reg: 03-20-05
03-15-19 04:41 PM - Post#2762161    

Hey guys, its 2019! And I'm rebuilding a 1pc rear main small block 350 out of my 95 Tahoe. I'm shopping around for rotating assemblies, is there any cheaper source for pre-balanced rotating assemblies than Summit with its Eagle kits? $650 is hard to beat. Mind you this is a stock rebuild, only thing I am upgrading is from the stock flat tappet cam to a stock LT1 roller cam. Thanks







 


grumpyvette 
Senior Chevytalk Moderator -- Performance Subject Matter Expert --
Posts: 17326
grumpyvette
Age: 71
Loc: FLORIDA USA
Reg: 03-16-01
03-16-19 04:20 PM - Post#2762258    
    In response to rusty82silverado

price is NOT the most important consideration, value per dollar spent, quality and durability would be far higher on my list of concerns, or if I could make in clearer, if I found spending an additional $100-$200 would add significantly to the precision of the parts being used,or you could select parts made from a significantly better alloy Id certainly opt for spending a bit more cash to boost precision and durability.

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!


Edited by grumpyvette on 03-16-19 04:24 PM. Reason for edit: No reason given.

 
scrambldcj8 
Silver Supporting Member
Posts: 2460
scrambldcj8
Loc: Belchertown, MA
Reg: 04-06-03
03-17-19 05:42 AM - Post#2762282    
    In response to grumpyvette

Agreed. Scat has better QC than Eagle. But I've used eagle rods w/out issue in a low RPM (<4500rpm) 383 truck/jeep application.

With that being said, might I suggest a 383 rotating kit....minimal cost increase and an extra step on the block work but in a truck application it's hard to beat. Many rod choices that are stroker ready. Pretty mild cam there to, so clearance should be OK...but still need to be verified. Will you be tuning that TBI or running stock tune with just the LT1 roller? Which LT1 roller...B-car of F?



 
Rick_L 
Honored Member
Posts: 27622
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
03-17-19 05:15 PM - Post#2762320    
    In response to rusty82silverado

If this is a "stock" rebuild, why do you even need a prebalanced rotating assembly?

Get the crank ground or replace if necessary. Have a machine shop check the rods and fix the big ends if needed, new bolts if you want. Buy some new pistons (if you even need them) and you're there.



 
scrambldcj8 
Silver Supporting Member
Posts: 2460
scrambldcj8
Loc: Belchertown, MA
Reg: 04-06-03
03-22-19 04:26 AM - Post#2762644    
    In response to Rick_L

  • Rick_L Said:
If this is a "stock" rebuild, why do you even need a prebalanced rotating assembly?

Get the crank ground or replace if necessary. Have a machine shop check the rods and fix the big ends if needed, new bolts if you want. Buy some new pistons (if you even need them) and you're there.




Great point. sorry I got lost in the moment. LOL



 
Stinky 
Senior Member
Posts: 1644

Loc: Whitewater, CO
Reg: 05-25-01
03-23-19 11:44 AM - Post#2762718    
    In response to scrambldcj8

And...a stock rebuild on a budget.

It came unbalanced....for a budget motor it could be overkill.

If you are going that far, a crate motor may be cheaper...I think around 2K



 
busterrm 
Frequent Contributor
Posts: 1230
busterrm
Loc: Wichita Falls, Tx
Reg: 08-31-10
03-25-19 06:10 PM - Post#2762883    
    In response to Stinky

Heck, modifying the block and an inexpensive rotating for 383, almost a no brainer to gain 30-40 ft lbs TQ, and about the same on HP.

==== BOB ====
If I can't smoke the tires I want more!

1976 Chevy Nova
2007 Chevy 1500 1/2 ton
2017 Harley Davidson XL1200 Sportster
2018 Nissan Versa Note


 
1983G20Van 
Super Senior Member
Posts: 3758

Loc: Bedford, Texas, USA
Reg: 11-13-02
03-28-19 03:58 AM - Post#2763052    
    In response to busterrm

  • busterrm Said:
Heck, modifying the block and an inexpensive rotating for 383, almost a no brainer to gain 30-40 ft lbs TQ, and about the same on HP.



I wouldn't expect more than about 30 tq with the extremely mild TBI setup. Stock those 350s are only good for 300 ft/lbs of torque. That is like 0.85 ft/lbs per cid. 383 with the same is 328 ft/lbs. Assuming it is all factory stock a 383 might hit 350 ft/lbs with a F/-car LT1 roller cam. B-car/Vortec truck cam...Forget about it!

I had a 18cc dished piston 350 TBI engine years ago that I used ZZ4 heads and a ZZ4 cam in for a while with a 454 TBI on top of a performer rpm intake.. It was very tame and I was able to dial the tuning in fairly easily.

1983 G20 Van, 350 TPI, Ported 906 Vortecs, Edelbrock 3817 Base, ASM oversize runners. Reed Custom Roller cam, 700r4, 12 bolt with 3.08 gears, Doug Thorley Tri-Y headers, true duals


Edited by 1983G20Van on 03-28-19 03:59 AM. Reason for edit: No reason given.

 
65_Impala 
Very Senior Member
Posts: 4213

Reg: 12-29-02
03-28-19 02:03 PM - Post#2763081    
    In response to rusty82silverado

For a stock rebuild on a real budget I would get the least amount of machining possible done and replace the pistons with stock type replacements. Heck, you can get 0.001" or 0.002" undersize bearings that might work with a crank polish instead of a cut to save money. Just make sure the pin height of the replacement pistons is the same as the ones being replaced and not putting the piston further down in the hole.




 
Algoma56 
Contributor
Posts: 709

Loc: Sault Ste. Marie, ON, Can...
Reg: 03-14-05
03-29-19 05:41 PM - Post#2763219    
    In response to 65_Impala

I have used the .001 undersize bearings before for freshening up engines. Good for keeping machine costs down.



 


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