1SlowHoe

iTrader: (28)

I hope so, I'm boosting a 10.4:1 408 this month

Atomic ran 11:1 and 8psi on his 410.

A Low Dime

iTrader: (13)

And it blew up

swift700

iTrader: (3)

.040 head gaskets have been ordered. I hope it's the right choice. Anyone looking for some unused .051 MLS gaskets?
Oh yeah, I forgot about that...

SILVERADO11

subscribed!

1SlowHoe

iTrader: (28)

And I blew up a 9.5:1 engine on 8psi.

And I run 10psi on my stock 10.9:1 LS2 all day, no meth and no problems for 2 years.

I found a good tuner...that's really what it's all about.

Keith

Didn't he overboost it once, untuned?

1slow01Z71

iTrader: (36)

The stroker with the blower ate itself because the builder didnt measure the journals on the crank correctly and it ate a bearing. Nothing to do with the actual setup.
That was on the turbo rig, went to over 20psi untuned IIRC

swift700

iTrader: (3)

1slow, thanks for the extra info, that gives me some added reassurance. I think I'll be happy with the higher compression and the extra squish at 9.92:1. It'll make it snappier all around. We have a great tuner in town here so getting it set up properly should be no problem. Now to find some injectors. Anyone have some 60 lb'ers laying around?

1slow01Z71

iTrader: (36)

I really wouldnt mind running a setup like what atomic did with his 1900 and 408 one day. The high CR blower setups seem to be the most fun to drive which is what Im after, I dont care about all out numbers. I like all of my power to be there right now when I hammer, instant gratification is much more fun

swift700

iTrader: (3)

I agree. A few reasons I built a 383 over a 408 were:

1. I already had the heads. They would have been too small for a 408 and too big for my 5.3
2. I didn't want to max out my blower. It's more suitable to a 383 than a 408.
3. I wanted some semblance of fuel economy. This is the truck I commute with. It's a short commute but I do drive it around town.
4. the 5.3 blocks are so easy to find, and cheap. I got the whole engine for $200 and have sold a few parts from it to further offset the cost.
5. Everyone's doing a 408. I know it's an excellent engine but I like the size of the 383. It's halfway between the 6.0 and the 408 and it's different, especially with a blower. Not many guys have done one.
6. It will have some awesome torque, bar none. Especially if I upgrade to a TVS2300.


I know there aren't too many good reasons for building a 383 over a 408 but now that I have it I'm glad I built it. There's a kid in a town nearby that I know and he just built a 383 Vortec for his '98 4x4 Sierra. He thinks he'll have a good chance against mine even after I'm done the swap. It's a nice truck, but boy is he in for a surprise this summer.