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General Site Info => Welcome => Topic started by: rumblebox on October 11, 2015, 11:17:25 AM

Title: '74 K20, 454 swap, 2nd owner, South Texas
Post by: rumblebox on October 11, 2015, 11:17:25 AM
'74 K20, SM465, 454 swap, NP208 swap, 14-bolt FF, D44

My uncle bought it brand new but hadn't used it very often in recent years. I've wanted it for a while and finally asked if he would sell it to me. Well, he ended up giving it to me about 7 months ago. So far, all I've done is clean it up, install better tires, and do a few small repairs.

I've been an LSX guy for the past 15 years, and this is my first adventure into old-school carb territory.

He installed the 454 and NP208 sometime in the 80's, but the 454 has developed a heck of a rod knock. It does have 781 heads, so I'm going to work those over a bit and put them on the new engine.

Performance plans:
- massaged 781 heads with big valves
- domes
- air gap
- 850 double-pumper with annular boosters
- solid flat cam with modern firing order swap
- 1.75" headers (i know)
- mandrel-bent 3" with bullets and magnaflows out the back (I hate the sound of side-exit duals)
- NV4500 swap

As far as cosmetics are concerned, I'm putting a patina preserver over the paint, installing a factory rear bumper, and restoring the interior. I'm not a fan of modern wheels on classic 4x4's.... They just look completely bro'ish to me.(Street trucks are a different story) So I'm repainting the steelies and trying to find some 69-style hubcaps that don't cost a fortune.
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: Irish_Alley on October 11, 2015, 11:18:57 AM
welcome from maryland
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: rumblebox on October 11, 2015, 11:44:05 AM
6.0, LS3 heads, cam, stall, full suspension, etc, etc.
I had a 99 formula that got creamed in a parking lot. So i found a V6 car with a blown engine for cheap that was in way better condition anyway to convert everything from the old car.
(http://i17.photobucket.com/albums/b53/rumblebox/buzzard/DSC_1028_zpsd2380f08.jpg)
(http://i17.photobucket.com/albums/b53/rumblebox/buzzard%202/042067E6-180E-44C2-AA33-014C5631F675-3087-00000201EED914B9_zpsd00ce4fd.jpg)](http://i17.photobucket.com/albums/b53/rumblebox/buzzard%202/AF34934A-D982-4992-A5DE-8CC0ABA71AE2-8287-00000390ED1623E4_zps41ce64ef.jpg)[/URL](http://i17.photobucket.com/albums/b53/rumblebox/buzzard%202/D9F38F12-CE32-4AC6-8851-FC0AADDB6A87-1053-0000010BF9FA81B9_zpsb9069104.jpg)

I sold the formula to buy this:
07 Victory Hammer, Lloydz intake, Bassani exhaust, Dobeck auto-tuner
(http://i.imgur.com/VlWRlSU.jpg)(http://i.imgur.com/bghaZMA.jpg)
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: AZ87V10 on October 11, 2015, 12:43:28 PM
Welcome from Northeast AZ!
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: Captkaos on October 11, 2015, 01:29:11 PM
Welcome to the site!
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: LTZ C20 on October 11, 2015, 05:21:03 PM
Welcome from central California.
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: VileZambonie on October 11, 2015, 06:44:02 PM
Nice!
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: Militiaman55 on October 11, 2015, 09:25:24 PM
Welcome, LOVE the 74!
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: Joec123able on November 12, 2015, 10:08:55 PM
Gorgeous truck!!! Love it just the way it sits
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: Jason S on November 12, 2015, 10:15:17 PM
Wow! 

Missed the '74 when originally posted... Very nice. 
I'd love to see more photos.
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: zieg85 on November 13, 2015, 06:25:50 AM
Welcome from west central IL
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: Tazman on November 22, 2015, 02:12:53 PM
Welcome from AZ.
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: TheChev on November 30, 2015, 05:52:24 PM
I like it! Really similar to my '74 except for the color and mine has a 350. Pretty nice to find these trucks with original paint, that should buff out nice like mine did
Title: Re: '74 K20, 454 swap, 2nd owner, South Texas
Post by: Jim_Hensley on January 09, 2016, 06:16:58 AM
Welcome from Temple,Tx. Nice truck.