368...should I, could I, would I

[Polo-1]

Originally Posted by Hib Halverson

As for what engine package I might do for the engine in Barney, the purple '95? I've studied all the posts here and I've traded emails with Marc Haibeck, Graham B. and Jim Van Dorn. I've decided the best bang for the buck as far as performance and durability will come with a boring old 368.

Some of the top LT5 builders.

They will make you a very nice 425-435 rwhp 368ci. in the $20-23K range.

You do know Pete makes more power with a stock 350ci. right

[XfireZ51]

Originally Posted by Polo-1

Some of the top LT5 builders.

They will make you a very nice 425-435 rwhp 368ci. in the $20-23K range.

You do know Pete makes more power with a stock 350ci. right

Polo,

I'm making 435rwhp w my stock bottom 350, GVD ported heads(small ports), and Pete's intake cams. Marc is claiming 510chp w just his ported top end and heads, stock cams. One question is whether Hib needs to pass emissions w his LT-5?

[Paul Workman]

Originally Posted by Polo-1

Some of the top LT5 builders.

They will make you a very nice 425-435 rwhp 368ci. in the $20-23K range.

You do know Pete makes more power with a stock 350ci. right

To Pete (and Marc's) point... What used to be done with a 368 is eclipsed now by stock bottom and stock cammed and stock TB 350s with current porting and cam tuning now commonly achieved by those that have continued to push the envelope. And, the costs have come down measurably as well.

For $10k a closed deck block is possible. Porting, depending on personal skill, can be a DIY project, or for (about) $5k or $15k total, a 391 would be possible. Just seems (to me) to be such lost opportunity to pick up some serious performance gains, for roughly what a 368 used to cost 15-20 years ago...

Example:



And, with some minor improvements since discovered, maybe 440 RWHP may be in store for this stock bottom, stock cammed, stock TB motor.

Just sayin....

P.

[Polo-1]

Originally Posted by XfireZ51

Polo,

I'm making 435rwhp w my stock bottom 350, GVD ported heads(small ports), and Pete's intake cams. Marc is claiming 510chp w just his ported top end and heads, stock cams. One question is whether Hib needs to pass emissions w his LT-5?

Good to hear Marc has up'ed his game to a 430rwhp 350. As for the others I have not heard of any updated porting/cams...

[Pete]

Originally Posted by Paul Workman

To Pete (and Marc's) point... What used to be done with a 368 is eclipsed now by stock bottom,stock cammed and stock TB 350s with current porting and cam tuning now commonly achieved by those that have continued to push the envelope. And, the costs have come down measurably as well.

And, with some minor improvements since discovered, maybe 440 RWHP may be in store for this stock bottom, stock cammed, stock TB motor.

Just sayin....

P.

BINGO!!!!
&
Stock Nikasil is better.

Today 368 is worthless

Still waiting to hear the oil issue with closed deck,any documentation on this.

Pete

[Jagdpanzer]

When comparing cost of a complete overhaul, with new OEM pistons, liners and rings, going the 368 route with good quality aftermarket piston/rings, rods and ductal iron liners is not significanty more expensive and has its advantages. Besides a little more displacement you can up the compression ratio to 12:1 for more power & torque and hone the liners installed the block using a modern deck plate honing methods for better piston and ring fit which helps with oil control. Aftermarket pistons also allow you to go with longer rods with the advantages a higher rod length ratio brings.

[Kevin]

if the stock liner coating is good enough for the audi lemans team, it's good enough for me

[Pete]

Originally Posted by Jagdpanzer

When comparing cost of a complete overhaul, with new OEM pistons, liners and rings, going the 368 route with good quality aftermarket piston/rings, rods and ductal iron liners is not significanty more expensive and has its advantages. Besides a little more displacement you can up the compression ratio to 12:1 for more power & torque and hone the liners installed the block using a modern deck plate honing methods for better piston and ring fit which helps with oil control. Aftermarket pistons also allow you to go with longer rods with the advantages a higher rod length ratio brings.

Phil,i understand the pros & cons but as we all know stock short blocks could run to 200k miles

Question still remains is the stock motor blown/broke?
If not,it's a waste to spend money for a 368, not worth the dollar to HP
Do a good top end,raise compression use Jerry's head gaskets a whole lot cheaper then doing a complete 368.
I don't think $12k-$15k is worth the extra 20hp
Basicly the pros & cons of spending this kind of money for an extra 20hp.

"It's all dollars and no sense"
Pete

[Polo-1]

Originally Posted by Pete

"It's all dollars and no sense"
Pete

true dat brother

[RICKYRJ1]

Originally Posted by XfireZ51

Polo,

I'm making 435rwhp w my stock bottom 350, GVD ported heads(small ports), and Pete's intake cams. Marc is claiming 510chp w just his ported top end and heads, stock cams. One question is whether Hib needs to pass emissions w his LT-5?

I'm making 508 chp with a M. Haibeck 500hp package.