[Black_V21]

I've been seeing more and more 427 build threads pop up so I figured I'd share mine.

Backstory on the car:
Previously the car was SBE, Ported heads by WCCH, 227/242 .629/.615 LSA 117 cam from DMS, Harrop 2650 (8.6/3.0), Fore triple pump, FIC 1300, and all the supporting mods. She made 888 rwhp on Ignite Red and ran 9.7 in the quarter. During the last track outing she ran a few more 9 second passes but overall something decided to check out. I haven't torn down the motor but it sounded like a spun bearing. During the last pass I noticed oil pressure drop and right after I heard a squeaking sound. I loaded up the car and decided it was best to order an aftermarket block before hurting anything else.

New Goodies on the way:
I order a Dart 427 SHP Pro from Borowski with Magnum Crank, Callies H Beam rods, Diamond Pistons, and Calico coated Clevite bearings. To take advantage of the clamping pressure for the heads on the new block I ordered FED Boosted M311 heads and a new custom cam from New Era Performance. Also picked up some ID1700x to feed this thing.

 

[Jim]

How long did you run the SBE at that power level?

 

[Black_V21]

Maybe 4-5 months. Ran a couple of track events and some local 1/8 passes.

 

[Jim]

Curious to see what you find after taking it apart.

 

[MrSurly]

Odds are... mains. spun and done, I imagine, but impressive that you got that much power for that long, while tracking it.

 

[MrSurly]

also curious if you’ve been required to cage the car to run 9s?


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[Black_V21]

also curious if you’ve been required to cage the car to run 9s?


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I haven't been asked to or stopped yet. I think it may differ with each track and official though.

 

[theheder]

also curious if you’ve been required to cage the car to run 9s?


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IIRC - NHRA cage rules are 10.0 for pre 2014 cars and 9.0 for newer. But some tracks are not enforcing that rule

 

[Black_V21]

Finally took everything apart. Looks like the block, crank, and two rods are toast.

 

[MrSurly]

OUCH!
Just curious about that cylinder crack...since that crack is in the siamesed area (backing against solid aluminum) can that create a combustion leak, or no?

 

[Black_V21]

New engine is almost complete. Waiting on the Frankenstein rocker stands so we can measure for pushrod length. Should be running soon. Hopefully.

 

[Rekkr]

Looking good!

 

[Black_V21]

We were finally able to put it in the dyno. Made 1012 to the wheels. Car feels great, feels like there’s more power all around the curve.

 

[Rubber Duck]

We were finally able to put it in the dyno. Made 1012 to the wheels. Car feels great, feels like there’s more power all around the curve.

Backstory on the car:
Previously the car was SBE, Ported heads by WCCH, 227/242 .629/.615 LSA 117 cam from DMS, Harrop 2650 (8.6/3.0),
--------------------------------
If you ran the same blower, pulley ratio and cam. . .
That's a good number.

Cam should pull hard to about 6650 rpm.

When you comment that the car felt like it had more,
what engine rpm did you shift at?

 

[Black_V21]

What I meant was the car felt more responsive, more torque and power in the lower rpm range. I say it because on the way home I was doing maybe 70 and down shifted to 4th gear, she spun the tires and went. I gave it maybe 35% throttle.
We also ended up switching the cam for this build. I'm not sure on specs but Alex at New Era calls it his Baby Shark cam. Its definitely more aggressive than the last cam. As far as the blower we are running the same pulley ratio, creating about 15lbs on this setup.

 

[SecondhandV]

What I meant was the car felt more responsive, more torque and power in the lower rpm range. I say it because on the way home I was doing maybe 70 and down shifted to 4th gear, she spun the tires and went. I gave it maybe 35% throttle.
We also ended up switching the cam for this build. I'm not sure on specs but Alex at New Era calls it his Baby Shark cam. Its definitely more aggressive than the last cam. As far as the blower we are running the same pulley ratio, creating about 15lbs on this setup.

Great results!

How much boost were you creating on the SBE and DMS cam? You see a lot of hand wringing on the webs about running a 2650 with a 376ci engine.

 

[Black_V21]

Great results!

How much boost were you creating on the SBE and DMS cam? You see a lot of hand wringing on the webs about running a 2650 with a 376ci engine.

Boost peaked around 17psi. If I could do it all over again I would upgrade the sbe before bolting the 2650. At minimum upgrade bearings, rods. and pistons.