a newer Chevy 8.1L

[1tonchevy]

has anyone ever stuffed one into our trucks? and what does 8.1L =?

[GmtGmt]

dirtylarry i belive has one in his 78 K10

[75ChevyGuy]

8.1 is a 496 if I remember correctly

[1tonchevy]

Originally Posted by 75ChevyGuy

8.1 is a 496 if I remember correctly

so pretty much a 500 caddy? i rove an Avy 3/4 ton with one an it was peppy as F*$@ wonder if it can be stuffed in the dually for a decent price.

[Pyrotechnic]

It will bolt in anywhere an older big block will fit. It is a bit oddball compared to the older big block though, the heads and intake manifold are totally different and will not interchange with older motors. However, the exhaust ports are still the same so that is not an issue. The engine also has a different firing order as well.

If you're looking to make big power it's not the way to go because of the odd ball heads, but if you just want to leave it stock or maybe put a hotter cam in it then it's a pretty good deal.

[Doug_J]

8.1L= 502 in the newer trucks.

[1tonchevy]

Originally Posted by Pyrotechnic

It will bolt in anywhere an older big block will fit. It is a bit oddball compared to the older big block though, the heads and intake manifold are totally different and will not interchange with older motors. However, the exhaust ports are still the same so that is not an issue. The engine also has a different firing order as well.

If you're looking to make big power it's not the way to go because of the odd ball heads, but if you just want to leave it stock or maybe put a hotter cam in it then it's a pretty good deal.

i'm not going for "power" just diffrent. seems like everything else has been done. i mean this is all what if right now

[Pop's C-10]

Originally Posted by Doug_J

8.1L= 502 in the newer trucks.

nope..still 496

[Doug_J]

what truck are you sticking it in? If its a little swb a BB is a BB its gonna smoke the tires you dont need all the little go fast parts inless your gonna be doin the 1/4 mile stuff.

[1tonchevy]

just my 84 Crew lwb dually

[Doug_J]

well I feel like an idiot but 8.1 is the 496 or atleast everything I find online 8.2 is the 502

[1tonchevy]

but my trucks a SBC 350

[1tonchevy]

can i mate a manual to the 8.1l?

[Doug_J]

Well should be able to pull wutever you want.

[1tonchevy]

Originally Posted by Doug_J

Well should make for a good pulling truck

yeah i just want something odd. but yeah shoul be a TQ monster or at least decent.

[Pop's C-10]

Originally Posted by 1tonchevy

can i mate a manual to the 8.1l?

Larry has a nv4500 in his

http://67-72chevytrucks.com/vboard/s...d.php?t=431033

[Doug_J]

I would think It's like alot of GM stuff bolt pattern should be the same an they made some of them 8.1 trucks with manuals. But that sure does seem like a lot of work to do I think it would be better to just stick a 454 in and call it good.

[Pop's C-10]

tha swap

http://67-72chevytrucks.com/vboard/s...d.php?t=298696

[1tonchevy]

Originally Posted by Doug_J

I would think It's like alot of GM stuff bolt pattern should be the same an they made some of them 8.1 trucks with manuals. But that sure does seem like a lot of work to do I think it would be better to just stick a 454 in and call it good.

yeah if i went that route why not just get a 6.0l i dont know what it equals but seems to be a common thing.

[Doug_J]

Originally Posted by 1tonchevy

yeah if i went that route why not just get a 6.0l i dont know what it equals but seems to be a common thing.

6.0 is 370 CI. I sure do wish they would just put everything in CI I'm tired of L.

[1tonchevy]

Originally Posted by Doug_J

6.0 is 370 CI. I sure do wish they would just put everything in CI I'm tired of L.

yeah i hate L the other way is so much easier.

[Mr. 250r]

In the sept 2011 car craft they have a piece on 8.1s its a 496 as stated they mainly bash it for being a bastard of the big blocks but later say some good things on it, as for manuals the 8.1s came with a 6spd manual the ZF S6-650

[Your41Plague12]

My shop teacher has an '06 K2500 with the 8.1 and a 6 speed. His had some tuning done and some other odds and ends (cold air intake, etc.). He claims he can get like 16-17 mpg highway and about 12 city if he babies it. It's also pretty quick if you get on it. He had nothing but good things to say. And for all the confusion about Liters and Cubic Inches, just multiply the liters by 61 to get cubic inches. A 6.0 = 366 C.I.D.