School me about diesels

[kennyw]

The stock 6.5L isn't going to give you 300 hp/500 ft-lb torque its only 190 hp and 380 ft-lb. There also isn't a 12 bolt front axle available stock... not sure you would want to make one either because it would cost more than a stock dana 60 but be weaker.

If you want 300hp and 500 ft-lb in stock form you need to pickup a 6.6L Duramax

http://www.dieselpowermag.com/tech/general/0703dp_gm_diesel_engine_swap/index.html

 

[imiceman44]

The stock 6.5L isn't going to give you 300 hp/500 ft-lb torque its only 190 hp and 380 ft-lb. There also isn't a 12 bolt front axle available stock... not sure you would want to make one either because it would cost more than a stock dana 60 but be weaker.

If you want 300hp and 500 ft-lb in stock form you need to pickup a 6.6L Duramax

http://www.dieselpowermag.com/tech/general/0703dp_gm_diesel_engine_swap/index.html

I was going to talk about the 12 bolt front
But in his defense about power numbers he said those numbers are for a built and tuned 6.5
then he said bang for the buck the best is a 6.5 stock.
I think bang for the buck would be whatever you find cheapest.
I got some 6.2's for $100 low miles good engines, even if the power is half of the 6.5 which it isn't, I can never find a 6.5 N/A for less than $500 let alone a Turbo 6.5 which is where the real advantage comes in.

 

[87 Blue Beast]

sorry, i wasnt specific enough. when i said bang for the buck, i meant that because the 6.2 just doesnt seem worth the swap to me.. too low of power. but i guess if your just lookin for fuel economy and you get one for 100 bux, go for it. btw, i meant 10 bolt front axle.. its a d44 to be exact. and it is very possible to get 300+ hp and 550+ ft lbs of torque from a 6.5. search it on google or something. there are a couple of people that have done it and have dyno sheets to prove it. a set of 18:1 pistons, 20-30 psi of boost, a good pnp job on the factory heads, aftermerket turbo, and marine injectors and injector pump will get you about 300hp . i know alot of people are goina disagree with some stuff i said, but everyone is intitled to their own opinion

 

[ccatlett1984]

sorry, i wasnt specific enough. when i said bang for the buck, i meant that because the 6.2 just doesnt seem worth the swap to me.. too low of power. but i guess if your just lookin for fuel economy and you get one for 100 bux, go for it. btw, i meant 10 bolt front axle.. its a d44 to be exact. and it is very possible to get 300+ hp and 550+ ft lbs of torque from a 6.5. search it on google or something. there are a couple of people that have done it and have dyno sheets to prove it. a set of 18:1 pistons, 20-30 psi of boost, a good pnp job on the factory heads, aftermerket turbo, and marine injectors and injector pump will get you about 300hp . i know alot of people are goina disagree with some stuff i said, but everyone is intitled to their own opinion

FYIm the 10bolt and the dana44 are different axles, the 10bolt is weaker than the d44. and regarding a 300hp 6.5, you have to spend lots of money to get those power levels, let alone any reliability out of the engine. great for a drag truck, but i wouldnt be pulling a trailer cross-country with one.
for that power and reliability you need to set your sights on a duramax or a cummins.

 

[tRustyK5]

Um, yeah. chuck 20-30 psi of boost at a 6.5 for a while and let us know how that works for you.

Seriously, you want to play in the 300 hp and 550 lb of tq club look for a D-max, 6BT or 7.3 PSD. all great platforms for the manly numbers that apparently you're craving.

My lowly 140 hp 6.2 will be keeping me happy for quite a long time to come, and if I ever do install my ATS turbo set-up I'll be quite happy with the 175 hp I get out of it. (reliably...)

Rene

 

[tRustyK5]

FYIm the 10bolt and the dana44 are different axles, the 10bolt is weaker than the d44. and regarding a 300hp 6.5, you have to spend lots of money to get those power levels, let alone any reliability out of the engine. great for a drag truck, but i wouldnt be pulling a trailer cross-country with one.
for that power and reliability you need to set your sights on a duramax or a cummins.

A D44 has 10 bolts on the cover too...so does a D60 and a D70.

The 8.5" GM front (round cover with 10 bolts) is no weaker than a D44, and no stronger either. Both use almost identical shafts, ring gear size, U-joints, etc, etc, etc.

Rene

 

[MaxPF]

Um, yeah. chuck 20-30 psi of boost at a 6.5 for a while and let us know how that works for you.

Seriously, you want to play in the 300 hp and 550 lb of tq club look for a D-max, 6BT or 7.3 PSD. all great platforms for the manly numbers that apparently you're craving.

My lowly 140 hp 6.2 will be keeping me happy for quite a long time to come, and if I ever do install my ATS turbo set-up I'll be quite happy with the 175 hp I get out of it. (reliably...)

Rene

Peninsular does it all the time. Of course, they use new AMG motors to make it happen, and they put 'em in boats where cooling isn't an issue, but I think a properly strengthened GM block would be OK. I would rather see a steel crank in there, but they seem to hold up fine with the nodular iron piece Here's the link: http://www.peninsularengine.com/marine400tai.html.

 

[kennyw]

The 8.5" GM front (round cover with 10 bolts) is no weaker than a D44, and no stronger either.

Technically it's marginally weaker with 28 spline axleshafts instead of 30, weaker axle housing design that is more prone to breaking if you jump a 7500 lb Suburban too. But the differences are so minor most of us would never be able to tell the difference between breaking the axleshaft at 100ft-lb vs 105ft-lb...

 

[kennyw]

Throw enough money at a 2.5L 4 banger and I bet you could see 300hp for a couple minutes too... its not the best bang for the buck though. You would be far better off starting with a stronger motor in stock form than dumping money into a 6.2 or 6.5.

But when it comes to keeping the same power of a stock small block Chevy but wanting increased fuel economy than the 6.2L NA is worth the swap. It will more than pay for itself in a work truck within a couple months. It will pull any load a stock 350 v8 gasser can at the same speed up the mountain.

 

[imiceman44]

Throw enough money at a 2.5L 4 banger and I bet you could see 300hp for a couple minutes too... its not the best bang for the buck though. You would be far better off starting with a stronger motor in stock form than dumping money into a 6.2 or 6.5.

But when it comes to keeping the same power of a stock small block Chevy but wanting increased fuel economy than the 6.2L NA is worth the swap. It will more than pay for itself in a work truck within a couple months. It will pull any load a stock 350 v8 gasser can at the same speed up the mountain.

actually 2.0 litre 4 bangers are being built with 325HP for prouction vehicles all the time now and they have good reliability too, they are however in smaller vehicles that weigh much less which I think makes a difference.
Also with the same 2.0 engines they do reach the 1800hp in some racing applications but for one race at a time of course.

 

[87 Blue Beast]

not trying to jack the thread, but has anyone ever done a d-max swap into a k5 or c/k series truck? any pics if so? what do you have to do with the wiring harness and does it use a small block tranny pattern? you got me thinkin now.. maybe i can find a decently cheap d-max