My new stock stroke 400 build

[Don Frelier]

Well considering my shortblock was put together 27 years ago and I'd be giving up around 20 cubic inches.
I might not fare too well.
How about after work today?
Mine runs...

 

[RemCharger]

Your cam selection should help with the lower ratio.


I wonder if it will keep up with mine on the highway?

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Is that a challenge, Don? Loser buys the beer?

Not sure how close proximity you guys are, but timeslips would work well too
I still have some in my console...

 

[qkcuda]

My plan is to baseline the current 361 at the track, and then run the 400 just to see how much of an actual improvement there is. The 400 won't be going in until after the summer at this point anyway.

 

[RemCharger]

My plan is to baseline the current 361 at the track, and then run the 400 just to see how much of an actual improvement there is. The 400 won't be going in until after the summer at this point anyway.

3.23s ?

 

[qkcuda]

No, I am still going to be running the 2.94's, so I am not expecting it to be a rocket off the line, but it does make for comfortable cruising.

 

[eldubb440]

maybe you guys should race from a roll

 

[Don Frelier]

To keep it fair Dave should fill the entire trunk and cargo area whereas I'll remove the spare and put a six pack in the trunk.

 

[qkcuda]

That would definitely slow me down, because the back bumper would be dragging the pavement.

 

[Don Frelier]

That would definitely slow me down, because the back bumper would be dragging the pavement.

Okay I'll comprimise.

You can get light beer.

 

[qkcuda]

I dropped by this afternoon and things are moving right along.

 

[Don Frelier]

Nice intake!

 

[RemCharger]

Looking good!
Thoughts; valve covers on wrong sides, and you're running the RH inlet pump?

 

[qkcuda]

I was waiting for someone to chime in on the valve covers, that was the first thing I noticed too. I busted their chops about it, but they will be fine like that for the dyno. That is the 73 water pump that was original to this engine, and I am just using that for the dyno as well. It will be switched out for the drivers side outlet when I do the engine swap.

 

[qkcuda]

They couldn't give me a date for the dyno yet, but I wanted to be ready, so I grabbed the AFB and pulled the Street Demon and my phenolic spacer off of the Charger, plus my strip kit, so I could take them over to the shop. Should be on the dyno within a week or so, fingers crossed.

 

[Dave6T4]

They couldn't give me a date for the dyno yet, but I wanted to be ready, so I grabbed the AFB and pulled the Street Demon and my phenolic spacer off of the Charger, plus my strip kit, so I could take them over to the shop. Should be on the dyno within a week or so, fingers crossed.

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Looks good, Dave. I have heard that switching valve covers to proper sides is good for about 10 h.p. LOL.

 

[qkcuda]

I heard that you want to reverse them....just like pistons

 

[icetech]

They couldn't give me a date for the dyno yet, but I wanted to be ready, so I grabbed the AFB and pulled the Street Demon and my phenolic spacer off of the Charger, plus my strip kit, so I could take them over to the shop. Should be on the dyno within a week or so, fingers crossed.

View attachment 1667687

Are you going to A/B the carbs? I'm curious how the street demon will do. I have one on my car and i have never had a carb just work sooo well out of the box, haven't driven it yet but just startup/testing so far with it has been a dream

 

[qkcuda]

Yes, the shop breaks everything in using their 650 Holley DP. The plan is to have them optimize the tune with the dyno carb, and the switch to the Demon, and then try the AFB. They are both 625's so it should be a pretty fair comparison. The AFB was on the car when I bought it, but the manifold setup was terrible, so it never really had a chance. I bought the Demon for the small primaries, to try and balance economy and power. We'll see.

 

[Orig69]

If the 625 cfm Demon carb works good (some had production issues) and the secondary air valve is adjusted correctly it could possibly outperform the 650 cfm Holley DP.

Just my opinion.

 

[qkcuda]

I have been running this SD on the 361 for 2 years, and after a couple of minor adjustments, it ran really well. It will be interesting to see a power comparison though.