If possible, look for the lq9 6.0L.
My buddy is doning a swap also, he has a 2000 rcsb silverado. he had a 4.3L with a 5-speed and now he's going to put a 6.0L and a 6-speed in it. the engine bolts right in and all you have to do is get a wiring harness and a computer for it.

 

damn... that would be insane... 6.0/T-56?!?!?! 'nuff said...

 

"Vics Red Rocket" said he had a '94 Cheyenne. Are you sure about "bolts right in"? I know from experience that different body style setups DON'T just bolt right in. Take my word for it, there's gonna be some surprises. Hopefully, nothing major, but NOT a direct bolt in.

Now, if you're talking about the ya buddy's 2000 RCSB, yeah, there's much better odds for it to bolt right in. '94 ??? UH-UH.

 

what do u think about traction.. What suspension or tires would u run with the more powerfull 6.0 and some bult-ons.... Do u think traction would be a major problem?

 

Put it this way... I've got a 5.3 now, and EXPECT to have traction issues with the POSI & gears I'm gonna have installed. Invest in a POSI, pic ya gears best suited for your use, and good-hookin' tires are a must. Afterwards, drive it like you stole it! I know I will.

 

I was talking about rotaryboys options. as for Vics Red Rocket, his will not bolt right in. I would think about putting a 5.7l vortec into the 94 cheyenne. That would bolt in a lot easier then a 5.3 or 6.0. I have a 5.7L vortec in mine and i was making 375rwhp 485rwtq. just read my sig.

As for tires i would think about going with the mickey tompson et street radial. A another buddy of mine went 10.64@126 and had no traction traction problems. that was in an s10 and he also but on a set of cal tracks.

 

i think its just you and me man- 4.3L power!!!!!

With gears, 100 shot, exhaust/intake, big stall and traction- s10's can run mid 12's so i dunno about your truck- prolly 13 flat

Best mods for a 4.3L
Intake
new y-pipe, exhaust and headers
NITROUS
MSD ignition
CFM-tech throttle body blade or throttle bodies
Edelbrock 2114 intake manifold
Custom tune

i got one in my blazer- i spray a 100 shot on it- go with the coldfusion kit- get a window switch/purge and bottle warmer as a starter- To run the 100 and beyond shot of nitrous you will need a Walbro 255lph intank fuel pump ($100)- since you already got intake and exhaust your fine there- Some people even run a 175 shot on our motors with no problems (yet)-

The block can handle 400whp if enough fuel is there but the stock intake manifold/ and fuel system will not due- Take a look at s10forum.com there thousands of 4.3L enthusiasts there- You will need to take an edelbrock 2114 carburater intake manifold for the 4.3L and send it to one of the three guys on s10forum who convert them to an MPFI set-up (im gonna do it with 42lbs injectors)- alone the 2114 manifold conversion can give you 50whp with a good tune (stock intake manifold is so horrible) Or you could port the intake runners on the intake manifold-

Boost is hard to run on the 4.3L- the fuel system sucks along with the intake manfiold you maybe run 12 intercooler psi if your very lucky but otherwise you need bigger injectors which the only way to do that is stated above-


Heads are key to making big horsepower in this motor- But they can become expensive if you do heads- 1.6roller rockers, port/polish, 3-way valve job, port match them to the intake manifold and headers, and crower valve springs- (if you cam it though and the cam has more than 500 lift you need to stay with 1.5 roller rockers otherwise your valves will say hello to your pistons) Also the 4.3L starts floating valves around 5k rpm so upgrading your valvetrain will allow the shifts to be higher in the rpm range like 5200


For cams i would either go 266AR or 270H (cant remeber exactly what they are but i think those are them)- 266 is a mild cam and 270 is a hard core cam)

If you dont have a custom y-pipe do it now that is the most restrictive part of the exhaust system on the s10's/Blazer's but i dunno about the silverados

Good luck with it (nitrous is safe dont let anyone else tell you otherwise- There are some good stickies in the blowers and bottles forum on s10forum.com)

 

If you want to run any kind of boost, like a supercharger or turbo you could change over the intake to a custom intake that hellbents10 can put together and then you can use your a trottlebody, any size injectors you want and not have a problem with fuel.

All thats left with this intake is machining, weld in the bungs, and injectors and so on. he can put all of it together includeing everything for about $1300-1400


there is also a cheaper way, he uses the same intake but just has an adapter plate and a stock tb.

Just a couple of different options for intakes

 

I looked at that intake but all I could find is the 2116 and all the ones I have seen looked like they were made for carb not injectors. I would like to change it but I think I need to take mine apart and look were the injectors go into the motor.

 

This is the 2114 intake. Go to summitracing.com and type in 2114 and look for the edelbrock intake. the intake is for a carb but hellbents10 can have an adapter plate made so it can work. as for the injectors, heres a picture of a machined one he had done.

It has been used before on a s10 and work perfect.