Good or Junk? Summit Parts Review @SummitRacing

Review of @SummitRacing parts

pistons SUM 17401C

connecting rods SUM-LS6125927I

[Nevoexpo]

Cool. Thank you for taking the time to show us this!

[jamayajackson]

I assembled a stock bore and uncut deck lm7 type from a 4.8 pullout using k1 forged crank for 5.3 (Didn't want to go high on stroke to preserve the walls and the pistons and also maintain as much material on top of piston), used maxspeedingrods h-beams with a 6.25 SBC length, and summit pro pistons I believe 1800-3780. Had it all balanced for like 250. Ported 862s and twin china 76s at 29lbs on pump 85 shifting at 8200 rpm. The summit stuff is good enough for me and the car makes over 200 HP per liter. Entire engine was under 2k total. I did blow out a head gasket and torch a hole through one of the heads when the head lifted/warped. I've since been using fire ring gaskets on stock 61cc chamber heads.

[autumnjeserich]

This is the info I was looking for. My trucks motor needed a whole bottom end replacement so I decided to make a 408 stroker since I found a forged 4 inch stroke crank locally. Was looking at the 6.125 rods with the summit pistons for the stroker because they're by far the best pricing I've found for them. Now I can feel better about ordering them. Thank you

[Nowayjose-zr]

For those who may not know how re-branding works which I got into researching. We all know Napa, Walmart (Super Tech), even Amazon don't have oil refineries yet have their own oil. Summit's case the factories want to work at 100% or close to it. Most of the time the "name" brands can't keep them busy so they sell re-brands of very similar parts. Harbor Freight Jacks are made in the same factory as Snap ons, hence the law suits etc. China will make anything they can at the price point you want and they can make quality products, just less profits.

I also have had no more issues with summits stuff compared. My only complaint over the years is some of the bolt kits are trash when you go cheap. Otherwise I agree, zero quality issues outside of hardware store not even grade 5 bolt kits.

[Wett]

very good video man. a lot of knowledge from you. you’d be someone i’d want to learn under for sure. i’ve been a mechanic for 5 years now i’m only 24 but if i could learn from someone from the start it’d be you for sure.

[umakemerandy]

Thanks for the vid. The summit assemblies are pretty attractive for a low cost upgrade it seems. Plus they have them laid out in a way thats perfect for picking what you want on summits site. Wish all the manufacturers assemblies were described thay way.

[wtfobiden]

You can be the bob ross of engine building

[pgwizz]

what is the hp rating on these pistons/rods?

[timweb]

How are these? Was considering the summit pro ls setup for a 5.3. I thought the rods were made by k1 for those

[andrefigueroa]

You had the whole rotating assembly balanced or just the crank?

[dustinbailey]

Well it's been a year how are they holding up?

[CULT]

They don’t balance worth a crap. That’s the problem with those. Rods and pistons on a stock crank are even harder to balance. That’s why summit won’t offer a balanced kit.

Spend another $500 and get good products. That’s just garbage.