engine limits?

mr.m

New member
what power levels/ psi do stock parts start breaking/ need replacing? ie:
crank
rods
pistons
block
heads (flow reasons)
valves
radiator
transmission
rear end
axels


thanks for any help guys.
 

mr.m

New member
Re: engine limits?

so you're saying on stock boost im going to be kicking rods?
 

StangBuster

O well, I'll find another
Re: engine limits?

Eventually something is going to break...These are time/maintence consuming trucks...Depends how the previous owner treated her...I would do research on every vehicle you look at...Most of the guys on this forum know about or helped someone buy their truck, and have some knowledge of its abuse...
 

mr.m

New member
Re: engine limits?

cool. i was just wondering, like, i plan on buying a truck and doing a full rebuild. i was thinking about what components would need replaced. i was planning on doing a stroker. do they offer NON billet stroker cranks? something like a 4340 forged steel piece? i obviously want forged pistons, and h-beam rods, with ARP hardware throughout. if i wanted about 400-450 crank hp, what would i be looking at?
 

TYTILIDIE

METH HEAD
Re: engine limits?

There are fairly stock motors in the 11's and 12's. I think even one or two in the 10's. I dont view our motors as weak links at all. I see the trans as that. My motors blew from stupid shit like the oil pick up tube fell offf and the third one the machine shop screwed up my crank. The frist was my retarted ex never checked the oil. Hence the term EX. I may go to a set of EAGLE rods on my current build and I have Hyperuetectic pistons. I guess it all depends on what you wnat to do with it. 4-450HP isnt enough to go crazy IMO.
 

mr.m

New member
Re: engine limits?

well, i like peace of mind, and the ability to throw more at it. i plan on running a PTE 54, and maybe the whp would be a bit more than 450. i really dont know. im fairly new, as you can tell.
 

TYTILIDIE

METH HEAD
Re: engine limits?

I would say do a mild build. Spend 1500-2000 on the motor alone. Unless you can afford the best.
 

gkrcr882

SyTyless......for now!
Re: engine limits?

the actual engine is very durable, its the detonation that destroys these motors. With a good turbo, IC, injectors, exhaust, alky, and proper boost control, these engines will develop an amazing amount of HP, and remain fairly durable. But start adding H-beam rods, strengthend cranks, and other "bottom end" components and the engine will be the least of your worries, the rest of the truck will be. The trannies in these trucks are tempermental, and some people have had good luck with them, while others have have to do multiple rebuilds, or even done a 4L80E swap since the 700's keep going. The front propshaft is one of the first things to go when large hp/tq numbers are made, since it is barely adaquate for a stock powered truck, but what isnt on these things?:2cents:
 

mr.m

New member
Re: engine limits?

alright, thanks for the input guys. ill probly just to forged pistons and h-beams.
 

AUSyTyIN

Unbusted $#it box
Re: engine limits?

Running that power, you will need to build the trans sooner rather than later.
 

Turbo6

10.20@131.8
Re: engine limits?

I pushed my stock original engine to 450 whp with no problems. The key is good fuel, good tuning and moderate timing. I never used a knock sensor either.
 

TYTILIDIE

METH HEAD
Re: engine limits?

Turbo6 said:
I pushed my stock original engine to 450 whp with no problems. The key is good fuel, good tuning and moderate timing. I never used a knock sensor either.

Im sure im stepping into muddy waters with this question but how do you get away with that? Are there any drawbacks? Im assuming youhad to do pretty routine runs to make sure everythign was running ok. Also, how do you do this ECM wise?
 

mr.m

New member
Re: engine limits?

16Sy16 said:
yup. A higher stall TC would be a huge benefit as well
i was planning on running the 9/11" torque converter. i read about it somewhere, cant remember brand name or stall for some reason. :roll:
 

dgoodhue

BuSTeD 4.3
Re: engine limits?

Engine

The crank & block have gone low 10's

The rods and piston have gone 10.93 but I would not recommend planing for that. They are weak and have very little margin of error as you increase the HP, plus you have to keep the RPM's down. This is what gives out motor the repuation of being a glass motor. IMO for performance you should never rebuild an engine with stock rods and pistons.

heads (flow reasons) & valves you do 11's with them, but they aren't the most effiecent way.

In general, There ususally is 3 type of engine builds on SyTy.

Stock long block, push the stock motor with more psi and bigger turbo. With a moderate turbo and good tuning it can run 11's.

Built up stock block and cranks, always with Forged Pistons & Rods. Usually this includes upgrade heads/cam, popular options to do at this time 4 bolt mains, nitridide or cyro crank. Many 10 sec Sy's have used this combo.

Bowtie Block, all out build usually with billet crank and exotic heads and porting, $$$


Drivetrain
Transmission will last in the 12's, in the 11's the stock parts fail really quickly.

Rear end & axels, rear should be replace when making serious HP, two 9 sec truck destroyed the rear end really quickly. The propshaft will break with regular boost launches (even on a stock truck)
 

mr.m

New member
Re: engine limits?

thank you, those are the awnsers i was looking for. im a regular V8 guy, i just dont know much about the SY/TY's.
 
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