What set of SBC 6.0 rods has the best cam clearance for 383

[RTR-1]

If you don't have the crankshaft & rods yet, you can go with 1.889" Honda rod pins.
With Honda size rods a 3.75+" stroke will clear a STD SBC bearing journal lobes easily.

[geraldtson]

Trying to get away from using small base circle cam on SBC 383. What set of SBC 6.0 rods under $750 a set would help me achieve my goal. I been looking at the Compstar H beam, Manley H beam, Scat Pro Comp, lunati voodoo stroker rods 70160003-8 (hard to come by right now 1 to 3 months away)., also not opposed to using something like Howards Cams Precision Dense Forged Connecting Rods PPF6000 in this engine if they get me cam clearance needed. Thanks all.

Just got through clearancing a set that were hitting that were once falsely advertised to clear .670 lift 4.000 stroke. They wouldn't even clear 3.875 stroke with .630 lift. Not even close. These are callies compstar 6.000 i beams. Not sure they make them anymore but they were advertised as stroker rods.These are great rods they just don't give you any clearance. What ever you use check clearance straight up and down then advance cam 4 to 6 degrees and you'll probably make contact there. All depends on rod big end, base circle, and stroke. In your application 3.75 stroke your likely to be OK anyway!! And your doing the right thing. Get away from sbc small base circle cam.

[Mark O'Neal]

I use a fair number of the Scat Q-Lite H-Beams. Ditto on the Honda Journal.

[Jginger]

Mark O'Neal » Sat Sep 15, 2018 12:12 am

I use a fair number of the Scat Q-Lite H-Beams. Ditto on the Honda Journal.

at what power level? and rpms

[bigmike]

If you don't have the crankshaft & rods yet, you can go with 1.889" Honda rod pins.
With Honda size rods a 3.75+" stroke will clear a STD SBC bearing journal lobes easily.

OP intresting idea I had not thought of, but will look into since I have not bought the crank yet.

[Newold1]

Use the Scat H-beams with the 2000 series bolts. They give the best clearance and will be everything you ever need in that engine. Keep the rod choice simple, inexpensive and put the investigation, efforts and dollars into selecting the great pistons, ring types and sizes, block machining and bore finishing. You have a much better level of power and reliability if you put more efforts in those areas. Rods and cranks for a 383 are no brainer.

[steve cowan]

Use the Scat H-beams with the 2000 series bolts. They give the best clearance and will be everything you ever need in that engine. Keep the rod choice simple, inexpensive and put the investigation, efforts and dollars into selecting the great pistons, ring types and sizes, block machining and bore finishing. You have a much better level of power and reliability if you put more efforts in those areas. Rods and cranks for a 383 are no brainer.

Yep,
This is the rod I use but 5.7"
The scat i-beam 8740 bolt will NOT clear a STD base circle from my experience

[Kbails]

also could look into these i know alot of people knock eagle but for what your doing they might be a perfect fit..
this is "Eagle's Maximum Stroke H-Beam''
https://www.summitracing.com/parts/esp- ... /overview/

[kimosabi]

Use the Scat H-beams with the 2000 series bolts. They give the best clearance and will be everything you ever need in that engine. Keep the rod choice simple, inexpensive and put the investigation, efforts and dollars into selecting the great pistons, ring types and sizes, block machining and bore finishing. You have a much better level of power and reliability if you put more efforts in those areas. Rods and cranks for a 383 are no brainer.

Yep,
This is the rod I use but 5.7"
The scat i-beam 8740 bolt will NOT clear a STD base circle from my experience

Strange, I use the H beams 8740 bolts and from what everyone and their mother says the I beams clearance is just as, if not better, good.

[Mark O'Neal]

Mark O'Neal » Sat Sep 15, 2018 12:12 am

I use a fair number of the Scat Q-Lite H-Beams. Ditto on the Honda Journal.

at what power level? and rpms

Just put a set in 6.200 SBC long rods in BBC with Big Chief heads. 650 gram piston, 62 lb crank. It'll be on the dyno in a couple of weeks.

Also have them in a stick shift Super Stock car that ran in the 9.20s last time out, but I'd have to get the rpm range.

[steve cowan]

Use the Scat H-beams with the 2000 series bolts. They give the best clearance and will be everything you ever need in that engine. Keep the rod choice simple, inexpensive and put the investigation, efforts and dollars into selecting the great pistons, ring types and sizes, block machining and bore finishing. You have a much better level of power and reliability if you put more efforts in those areas. Rods and cranks for a 383 are no brainer.

Yep,
This is the rod I use but 5.7"
The scat i-beam 8740 bolt will NOT clear a STD base circle from my experience

Strange, I use the H beams 8740 bolts and from what everyone and their mother says the I beams clearance is just as, if not better, good.

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Sorry guys,
i should of given more information,
Scat 5.7'' H-beam 2000 arp bolt clears a STD base circle cam.
Scat 5.7 I-beam 2-ICR5700 3/8 x 1.6''arp 8740 cap screw hits a STD base cam at the shoulder,maybe it can be ground down for clearance,i dont know,i used these rods in 383sbc with small base circle.
Scat 6.0 I-beam 2-ICR6000-7/16 x 1.4'' 8740 capscrew,i have not used these rods yet but i think they might clear looking at the shoulder clearance,anybody verify this??

[Newold1]

bigmike:

Does not sound like you are building an all out race engine here, because most likely if you were it would be at least a 408-421 size with more stroke.

I as well as others here have built lots of small blocks chevys with 3.75 stokes and good H-beam rods and cam clearances up to .600"-.625" lifts with stock like base circles and not had clearance issues. This is why well designed H-beam (profile) rods are shaped as they are!

The reasons I think the H-beams although a little higher cost are the best way to go is for STRENGTH! They are only about 10 grams heavier in that size and that's insignificant when you compare STRENGTHS.

The Scat Pro I-beams are effectively rated between 500-550HP max. by Scat themselves. The (GOOD) H-beams can take 1000-1200HP!

You may not be building for that kind of HP but it's cheap INSURANCE!

As for the 2000 series ARP rod bolts I did bring them up for clearance solutions, but again for STRENGTH! Additional cheap INSURANCE!

Don't cut silly COST corners, buy good H-Beam rods with 2000 bolts, your cam base circle clearances will not be a problem and you will sleep better a night knowing your 383's bottom end is STRONGER!! JMHO

[kimosabi]

8740 bolts are plenty for a 500hp streeter sbc 6" rods to 6-7000rpm. Way way stronger than standard bolts, plenty clamp, and just almost, yes almost, up to ARP2000 in tensile strength. Cost is why people recommend the 2000 bolts because they are not that much more expensive. Might as well.

[Sajomatic]

Scat 6.0 I-beam 2-ICR6000-7/16 with the ARP2000 bolt upgrade

[77cruiser]

The IRC 6000 procomp rod has more clearance than a stock 400 rod so a standard base circle cam should be able to be used.