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06-12-2018, 07:06 PM | #1 |
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Join Date: Mar 2018
Location: Kuna, Idaho
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LOL....customer truck.
So a customer bring g me his 77 K10. Decent truck and he wants to clean it up and do some upgrades. It has 400 sb "509" block.
Previous owner decided to put 305 heads on it. Great so now it's 10.0:1 compression witha cam and falls on it's face around 3700rpm.... Sounds good at idle anyway. LMAO Dan
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
06-12-2018, 07:32 PM | #2 |
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Join Date: Oct 2009
Location: Buhl, Idaho
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Re: LOL....customer truck.
why would people do this? lol
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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11 1981 chevy K10 short Bed Scottsdale SOLD 10-26-2020 67 GMC Stepside Straight six/3 on the tree "The Peach" 2020 Silverado Double Cab LT Z71 5.3 8 speed Daily Driver K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934 The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903 |
06-12-2018, 07:46 PM | #3 |
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Location: Kuna, Idaho
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Re: LOL....customer truck.
I dunno man. The current owner is a great guy so I'm hooking him up with a 355 build that should take him just over 400hp and around 480tq.
It will be based on on a Vortec block for the 1 piece rear main and the hydraulic roller cam. Iron Vortec heads. 9.8:1. I bet he will have more fun with the new setup and pump gas friendly.
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
06-12-2018, 07:49 PM | #4 |
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Join Date: Dec 2012
Location: Temple City
Posts: 3,586
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Re: LOL....customer truck.
I have seen it a few times in my life, but usually they corrected the high compression ratio with a rebuild. The best example that I saw from beginning to end was a friend at the time.
He had a idea that if he put 305 heads which were mildly ported/cleaned up with a cartridge rolls on a 350. The idea was the high velocity would help torque, and thusly help improve mpg. At the rpm he drove 2200-2500rpm. It would also fall flat at 4300-4500 rpm, but wow it had some torque. Also it would idle at 600 rpm like a dream, and started almost like a fuel injected car. Quite a few of us got into the experience, and we were lending him various items to try out. Things like ram air intakes, velocity stack style, 4 inch tall filters, and Holley vs Q-jet. I don't remember the details, but it did work out quite well for him. It was something like 9-1 comp, 1.5 inch long tube headers, advanced cam timing, and highly detailed build. The cam was similar to a comp 265 where it usually has a factory 4* advance, but he put it to 6*. The rear end was a 2.47 gear swapped into his 10 bolt. I don't remember what the final version ended up being as it went through a few variations, and parts changes looking to fully dial it in. In the end with a TH350 auto he could get 25 mpg highway doing 60, and 22 doing 70. He lived in San Gabriel, and worked in Mira Loma as a diesel tech. His first real job, and starting out. Since it was a longer drive, and he needed a new engine anyways. The whole build started coming together. Back then overdrive transmissions we're very expensive so he tried this way. |
06-12-2018, 07:53 PM | #5 | |
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Join Date: Mar 2018
Location: Kuna, Idaho
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Re: LOL....customer truck.
Quote:
I've seen it before too, just been awhile.
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
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06-12-2018, 08:23 PM | #6 | |
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Join Date: Dec 2012
Location: Temple City
Posts: 3,586
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Re: LOL....customer truck.
Quote:
In my friends case they worked because he went all in on the concept. Where as if you just put them on a traditional 4.11 geared 350 SBC powered truck. The gains wouldn't be there as your at the beginning of the choke point at the mph most drive now. Plus induce other issues that would come up on a basic head swap with out considering potential issues. Although it should start up great, and sound pretty mean. |
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06-13-2018, 07:10 PM | #7 |
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Join Date: Mar 2018
Location: Kuna, Idaho
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Re: LOL....customer truck.
So, same truck. We are doing a complete front end rebuild in it. Recent had the diff covers off for inspection. Cleaned them up and coated them in KBS Rust Seal. The stuff is really durable and looks pretty dang good.
Won't just flake off like bomb can crap.
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
06-14-2018, 12:03 PM | #8 |
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Join Date: Dec 2012
Location: Temple City
Posts: 3,586
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Re: LOL....customer truck.
How do you like kbs vs por15 or rust bullet
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06-14-2018, 12:09 PM | #9 |
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Join Date: Mar 2018
Location: Kuna, Idaho
Posts: 117
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Re: LOL....customer truck.
Absolutely LOVE the KBS system, and I've been using POR15 for years. I'm so impressed with it and the customer service that I'm seriously thinking about becoming a reseller. I'm just outside Boise Idaho and the closest reseller is over 200 miles away.
Anyway, the stuff work often better than advertised. The pics of the diff covers were done with a 79¢ bristle brush. It flows out and self levels incredibly well. It can be sanded and recoated, top coated, cleared, etc. I love the stuff. Dan
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
06-14-2018, 12:39 PM | #10 | |
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Join Date: Dec 2011
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Re: LOL....customer truck.
Quote:
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06-14-2018, 12:40 PM | #11 |
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Join Date: Jan 2003
Location: Safford,AZ
Posts: 3,612
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Re: LOL....customer truck.
Why not recommend to upgrade the head to vortecs?
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06-14-2018, 12:46 PM | #12 |
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Join Date: Mar 2018
Location: Kuna, Idaho
Posts: 117
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Re: LOL....customer truck.
Compression numbers and leakdown were out of range. Otherwise, that's exactly what I would have e done. With just minor machine work the Vortecs work great on earlier stuff.
Dan
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
06-14-2018, 08:32 PM | #13 |
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Join Date: Aug 2005
Location: Louisiana
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Re: LOL....customer truck.
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06-14-2018, 08:44 PM | #14 |
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Join Date: Mar 2018
Location: Kuna, Idaho
Posts: 117
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Re: LOL....customer truck.
All the numbers are rough estimates. Any builder know that its just an educated guess til you get on a dyno, even with a repeatable build.
Now, 10.3:1/ around 5600, and yes naturally aspirated.
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
06-14-2018, 08:56 PM | #15 |
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Re: LOL....customer truck.
those covers look great!!!!!
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06-14-2018, 08:59 PM | #16 |
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Join Date: Mar 2018
Location: Kuna, Idaho
Posts: 117
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Re: LOL....customer truck.
Thanks, Customer doesnt know it yet but I'm doing the rest of the front suspension with that as well. He gonna be stoked!
Dan
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Forgive my typos, big fingers and little Android digital keyboard....what a mess 06 GMC Sierra crew cab Z71 DD leveling kit, 34's, bumper, LED lighting. Still doing stuff to it. 67 El Camino Custom 300 Deluxe. In progress. 55 GMC 371 2 1/2 ton. Upcoming project. |
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