V8 Pistons

P

prosty

The tranny breaker
Is it true that you can use regular pistons for V8 350 pistons for our trucks? Just forged for "nos" use and higher power outputs. Don't you have to use special pistons for our trucks? Some wiseass in the local garage claimed he could build a more solid engine than mine with the Eagles / TRW's for half the price. I'd love to see that...

Has anyone ever broke TRW pistons. I mean cracked them or made a big hole in one of them? If so please let me know.

The rods are the same for a V8 as for our trucks? (I mean the Eagle ones, the stock for a 350 wouldn't last long...)

//Markus
 
tytom

tytom

Donating Member
Pistons are the same, so 350 pistons would work if You use the dish type for blowers. The stock small block rods are better than the SyTy , they hold up to some good power if You change rod bolts and do some minor prep. However, they will NOT work in the 4.3 . Different part, cannot be adapted to work at all, as far as I know. So the guy either does not know his stuff or just BS-ing You. :)
 
P

prosty

The tranny breaker
The stock pistons had a "special heat treatment" last I heard :) But can I get 8 V8 Pistons and feel just as "safe" as I feel with my TRW's ? I mean a set of 8 pistons for a V8 is cheaper over here than 6 pistons in the US... Weird..
 
tytom

tytom

Donating Member
Stock pistons are crappy cast stuff. The TRW You buy for the V6 is the same forging as the V8. TRW or Speed-Pro as they are also called, is a very good piston for the price. Did You price the dished set for a V8, or just flattops? I suspect the dish ones are more expensive. Even better piston for a little more money is the SRP (JE). Heat treatement on stockers is news to me...I know You can apply coatings to forged pistons and some peeps swear by them, others say they flake and stuff like that and dont use them. I dont know... about safety, sure, those TRW are just as good as the TRW You have in there now. As long as You dont detonate too much,they will be OK. If You do detonate,nothing will hold up.
 
tytom

tytom

Donating Member
SRP and JE are the same company,as far as I know. JE's lower priced product line is marketed as SRP. May be that JE is mostly custom and SRP is mass produced like TRW and therefore lower priced then JE.
 
jwaller

jwaller

Evil Genius/SyTy Guru
ANY piston can be killed if the motor isn't run properly.

I have put a hole in a TRW.

JE is most expensive but it's the lightest.

SRP is the same as JE but not as expensive bc it doesnt get all the machine work to make it as light as a JE.(and slightly different composition)

TRW's are heavy as crap and they are the cheapest.

The JE company makes both JE and SRP.
 
tytom

tytom

Donating Member
Yes they are. They are inexpensive and they are good. They are heavyer than SRP-s tho. Weight starts to matter when rpm-s get higher. If You are building a high rpm motor then SRP is a better choice. If rpm-s will be modest
then weight is not as important and the TRW will do fine. Motors run up to 7000rpm with TRW pistons with no problems. If money is no problem,go with the SRP . If Your engine will not see rpm-s over 6000 ,go with TRW and save some cash. If You detonate the motor both will melt, as any piston made of aluminum alloy will. It all depends on what Your goals are with Your truck.
 
Christian Dionne

Christian Dionne

Member
You can make a SBC rod work in a even fire V6 with a little machine work. Probably evens out the cost savings with additional work. Everything John said is absolutely correct.
 
442typhoondude

442typhoondude

Ty'less Bum
Doesn't the oil pan have to be modified to fit SBC v8 rods? And sad to say, it is more worth to buy the v8 set than the v6. Very little more than a 6 set but you get 2 extras! :lol: Now as for converting to 4 bolt mains and running an 8 rod, I have no clue. Does anyone make a decent girdle for the 4.3's. I'd imagine it would be a very helpful buy.
 
tbauer03

tbauer03

TRBOBOX
Isn't the journal size different for the 4.3L than a SBC they use 5.7inch rods but i think the journal size is a lil different. I am not 100% on that though.
Stock Pistons are hyperneumatic (sp) which is a stronger than cast but not as strong as forged. Anyway i am going with eagle h-beam rods and srp pistons with total seal rings and i think it is going to be a pretty good combo.

Speaking of melting pistons check out #1 from my stocker. I posted it b4 but incased u missed it.

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