What hp and torque am I making?

[dustyaman]

I just got done rebuilding my 360 and just broke it in on a home built engine stand. I put all new bearings in the engine is bored .03 over. It is a low compression smog engine. So stock crank and slugs were put back in. Added double roller timing chain, comp cams 268xe cam, Chinese knockoff rpm airgap intake, 650 double pumper brawler carb, and Doug's headers. It does still have the smog heads with the factory springs for now since I was just breaking in the cam. Will change springs later. Has a proform disty with a flamethrower coil. So as it sits right now what would the power numbers be? And if I decide to get aftermarket heads. How much power would I gain on a low compression engine?

Thanks in advance for responses.
Also this engine is going to be paired with the new tkx tremic perfect fit kit from sst.
So I'm excited to get this combo in the duster. Coming from a little slant 6 and 904 auto.

 

[dustyaman]

Here is a couple extra pictures of the car

 

[crackedback]

340-350hp 380-390tq

Nice ride!

 

[dustyaman]

340-350hp 380-390tq

Nice ride!

Thank you very much. I love this car I had the slant 6 in it since i was 14 when I bought it. I'm 35 now so I knew it was time to start upgrading it with the disk brakes and bigger rearend also.

 

[MidnightSwinger]

At the crank, I’ll say 295 hp and 375 tq

 

[Jadaharabi]

Like your engine stand and car.
With the stock heads I think 300 hp and 325-350 tq.

 

[dustyaman]

T

Like your engine stand and car.
With the stock heads I think 300 hp and 325-350 tq.

Thank you. Didn't cost me anything to make the stand all scrap metal from work. Just welding wire and gas from my welder is all it cost me lol.

 

[rumblefish360]

330-340 hp max.

The small valve smog heads are KILLING your power.

 

[GTX JOHN]

290 to 300 HP if properly assembled and 330 Torque.
Given decent ring sealing.

 

[Garrett Ellison]

Worked on the same build but with a set of refreshed later 308 heads and installed in a heavyweight W300. 300hp with the stock 8-8.5:1 compression. It did what it needed to, and was a significant improvement over a stock hydraulic roller 318 with an Edelbrock Performer and headers.

 

[dustyaman]

290 to 300 HP if properly assembled and 330 Torque.
Given decent ring sealing.

Honestly that's all I want with a 8.25 rear in the back. Just wanted a nice power upgrade from the original slanty. It's got great compression across the board as well.

 

[dustyaman]

Worked on the same build but with a set of refreshed later 308 heads and installed in a heavyweight W300. 300hp with the stock 8-8.5:1 compression. It did what it needed to, and was a significant improvement over a stock hydraulic roller with an Edelbrock Performer and headers.

That's great to know thank you

 

[dustyaman]

330-340 hp max.

The small valve smog heads are KILLING your power.

Yeah I went cheap with these at the moment but with trickflow which is what I want is expensive and take forever to get

 

[Divenut]

That will be a real fun motor. Enjoy!

 

[dustyaman]

That will be a real fun motor. Enjoy!

Thank you

 

[RustyRatRod]

340-350hp 380-390tq

Nice ride!

Probably a spot on guesstimate! That will be a lot of fun as a real driver!

 

[dustyaman]

Here is a video for your guys enjoyment.
it is smoking a little bit out of the breather. I found out after this this video was made i pulled the valve covers and found all my valve seals are shot so those are all on order.

 

[dustyaman]

Probably a spot on guesstimate! That will be a lot of fun as a real driver!

Can't wait to get the tkx transmission with this. It's going to be fun as heck.

 

[RustyRatRod]

Can't wait to get the tkx transmission with this. It's going to be fun as heck.

Perfect for a street car. Much more is a waste really.

 

[273]

I just got done rebuilding my 360 and just broke it in on a home built engine stand. I put all new bearings in the engine is bored .03 over. It is a low compression smog engine. So stock crank and slugs were put back in. Added double roller timing chain, comp cams 268xe cam, Chinese knockoff rpm airgap intake, 650 double pumper brawler carb, and Doug's headers. It does still have the smog heads with the factory springs for now since I was just breaking in the cam. Will change springs later. Has a proform disty with a flamethrower coil. So as it sits right now what would the power numbers be? And if I decide to get aftermarket heads. How much power would I gain on a low compression engine?

Thanks in advance for responses.
Also this engine is going to be paired with the new tkx tremic perfect fit kit from sst.
So I'm excited to get this combo in the duster. Coming from a little slant 6 and 904 auto.

View attachment 1715986826

View attachment 1715986827

Here's mods to a stock 360 short block you should be 340-350hp.

 

[RustyRatRod]

Here is a video for your guys enjoyment.
it is smoking a little bit out of the breather. I found out after this this video was made i pulled the valve covers and found all my valve seals are shot so those are all on order.

That sounds really good! The smoke out of the breather is nothing. Perfectly normal.

 

[dustyaman]

Perfect for a street car. Much more is a waste really.

Absolutely!! Save the manuals!

 

[dustyaman]

That sounds really good! The smoke out of the breather is nothing. Perfectly normal.

Thank you. I'm going to change the seals just for the heck of it

 

[ir3333]

I'm betting Crackedback is very close! 350/390

 

[dustyaman]

Here's mods to a stock 360 short block you should be 340-350hp.

I will watch that video when I get home. Out with the wife right now