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Old 07-17-2011, 05:51 PM   #1
77BBGMC
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engine bay before and after

Thought I would post a couple before and after pictures of my engine compartment. I have a few more things to do, but it’s at a stopping point now. Just a quick overview, motor was original 454 with a lot of miles. Goal was to do as much as possible myself (I’m not a mechanic) or be involved in anything that was done, plan was to rebuild the tranny and freshen up the engine. I had a buddy that used to be a tranny guy do the rebuild, I was the grunt. Once tranny was completed it was time to start on the motor. Long story short…ended up buying a complete 454 with a spun rod bearing. Since my brother-in-law is an automotive machinest we decided to build a 496. Pretty basic pump gas motor, stock rods, Scat Crank, 781 heads with larger valves, Comp roller cam and valve train, Holley 870, hooker headers. Since I was going to do the install myself, I figured it would be good to get it dialed in on the dyno. I’ve seen it done on TV, but it’s much better in person. I was a little nervous, but once it fired up it was all good.

The motor swap has taken longer than expected; I’ve cleaned, replaced or repainted everything in the engine compartment (Yezzi provided good motivation). Some day when I do the bodywork I’ll redo the firewall; they are too cluttered looking from the factory. I have a new appreciation for all you guys that are doing complete restorations/rebuilds, I just finished the first stage and it has taken me a year.

Overall I’m happy with the way it came out. Still not too crazy about my powder coated intake or headers. First experience with headers, I didn’t realize they would generate more heat than the cast manifolds, or it seems like they do. I had 3” exhaust, H pipe with Dynomax Super Turbo mufflers installed last week, it’s quiet going down the road and has a nice sound at idle.
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Old 07-17-2011, 05:58 PM   #2
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Re: engine bay before and after

Looks awesome, give yourself a pat on the back.
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Old 07-17-2011, 06:26 PM   #3
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Re: engine bay before and after

Looks good
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Old 07-17-2011, 06:47 PM   #4
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Re: engine bay before and after

much nicer now!
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Old 07-17-2011, 06:56 PM   #5
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Re: engine bay before and after

great job!!
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Old 07-17-2011, 07:32 PM   #6
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Re: engine bay before and after

Looks great!!! I like the intake too.
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Old 07-17-2011, 07:35 PM   #7
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Re: engine bay before and after

Nothing like fresh orange paint...
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Old 07-17-2011, 07:37 PM   #8
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Re: engine bay before and after

Way to go! I hope mine looks that decent when I'm done.
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Old 07-17-2011, 07:40 PM   #9
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Re: engine bay before and after

Thats looks really good! Nice work. What a difference. How long did it take you?
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Old 07-17-2011, 08:06 PM   #10
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Re: engine bay before and after

Very, very nice! Thats a major improvement...
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Old 07-17-2011, 08:19 PM   #11
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Re: engine bay before and after

What kind of numbers on the motor? I am looking to build one for my truck real soon.
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Old 07-17-2011, 08:28 PM   #12
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Re: engine bay before and after

I can just see that factory looking yellow long bed pulling away from some kid who doesnt know what just happened . I imagine the looks of the truck will cause people to look closer and what they find under the hood will please them . I like that . I love an orange engine with the 70's factory muscle car look .
Good Job!
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Old 07-17-2011, 08:29 PM   #13
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Re: engine bay before and after

Awesome job!!!
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Old 07-17-2011, 08:35 PM   #14
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Re: engine bay before and after

Looks bad ass! Great job!
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Old 07-17-2011, 08:57 PM   #15
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Re: engine bay before and after

Remarkable transformation.
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Old 07-17-2011, 08:57 PM   #16
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Re: engine bay before and after

You did a great job..
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Old 07-17-2011, 09:56 PM   #17
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Re: engine bay before and after

you did a great job, looks fantastic
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Old 07-17-2011, 10:48 PM   #18
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Re: engine bay before and after

Damn man... that looks perfect... awesome awesome job!
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Old 07-17-2011, 10:59 PM   #19
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Re: engine bay before and after

Quote:
Originally Posted by liftlawssuck View Post
What kind of numbers on the motor? I am looking to build one for my truck real soon.
Here's snap shot on a line graph. I didn't realize until I got the print outs that they didn't record the lower end RPM's.
The purpose of doing the dyno wasn't necesarily to have the numbers but to make sure everything was working properly before installation. That being said it was fun to see what it did. We only did four pulls and that took up half a day.
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Old 07-17-2011, 11:03 PM   #20
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Re: engine bay before and after

Quote:
Originally Posted by Street3285 View Post
Thats looks really good! Nice work. What a difference. How long did it take you?
I couldn't tell you how many hours for sure, but it took longer than expected!
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Old 07-17-2011, 11:08 PM   #21
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Re: engine bay before and after

Thanks guys for the compliments, I appreciate it!
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Old 07-18-2011, 12:12 AM   #22
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Re: engine bay before and after

That is very pretty...Oh...and everything always takes more time, and costs more money than you think it will.
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Old 07-18-2011, 07:16 AM   #23
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Re: engine bay before and after

I agree with everyone else, great job, looks so much nicer. Nice #`s on the motor also.
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Old 07-18-2011, 10:05 AM   #24
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Re: engine bay before and after

Looks awesome man. Nice touch with the dyno numbers. Gets me motivated to get started on my 383. Once more great job.
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Old 07-18-2011, 10:40 AM   #25
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Re: engine bay before and after

Attension to detail.......nice work!
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