Classic Engine Tech 1967 - 1981 Engine Related

640HP Smallblock

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Old Feb 9, 2014 | 10:02 PM
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640HP Smallblock

Finally ran my motor on the dyno. I'll be dropping it in next week when the converter arrives.



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Old Feb 17, 2014 | 11:04 PM
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Re: 640HP Smallblock

Old Mar 7, 2014 | 10:53 PM
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Re: 640HP Smallblock

Everything on this new motor is different and needs to be modified. Would have been driving the car weeks ago if I had just dropped in my old setup. But that wouldn't have satisfied my need to go faster.

My electric fans have been on backorder for several weeks. Once those arrive I still need to mount the catch can for the radiator, catch can for the vacuum pump, pickup my new hood, have the exhaust welded up and re-wire the nitrous. I've had a progressive controller on my nitrous but always ran it at 100% because the car dead hooked. May need to actually use the controller with this motor.

Until then, here's another video of it running in the driveway.

Old Apr 6, 2014 | 09:19 PM
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Re: 640HP Smallblock

Everything is all buttoned up. She's ready for some motor passes next Saturday. I expect it should run 10.20's maybe better. I would be shocked and real happy if it ran a 9.90.

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Old Apr 12, 2014 | 02:51 PM
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Re: 640HP Smallblock

It sure looks like you didn't spare any expense. Be sure to post up after you try it out. That cam sure sounds raunchy, What is it?? Is that duration really at .050?
Old Apr 12, 2014 | 04:07 PM
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Re: 640HP Smallblock

Originally Posted by Kevin Blown 95 TA
It sure looks like you didn't spare any expense. Be sure to post up after you try it out. That cam sure sounds raunchy, What is it?? Is that duration really at .050?
Thanks! Here are the specs on the cam:

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Old Apr 12, 2014 | 06:56 PM
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Re: 640HP Smallblock

Good grief! That is a lot of duration. I was trying to see how high it was revving in the video, but I couldn't really see the numbers. Good job on building a killer small block 427. That's the best one I've seen in a while. Good luck at the track!
Old Apr 13, 2014 | 01:43 PM
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Re: 640HP Smallblock

Originally Posted by Kevin Blown 95 TA
Good grief! That is a lot of duration. I was trying to see how high it was revving in the video, but I couldn't really see the numbers. Good job on building a killer small block 427. That's the best one I've seen in a while. Good luck at the track!
Thanks! I planned on going to the track yesterday but Sacramento Raceway canceled Test n Tune because they had a private track rental going on. So I swapped the slicks for my other rims with 28" X 14.5 Hoosier QTP's and drove it around.

Old Apr 20, 2014 | 01:03 PM
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Re: 640HP Smallblock

Made it to the track yesterday! It ran 10.40's at 128 on the motor with sixty foot times in the 1.50's. It was dead hooking but would bounce when I got aggressive off the line. Time to replace the $15 Kragen shocks in the rear and Comp Engineering shocks up front.

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