Slant 6 Machine shop near Denver Colorado

[ValiantKevin]

I know many machine shops will simply say they can "do" whatever, but when possible I like to try finding a shop that has experience specifically... having said that, does anyone know of a machine shop near Denver that is familiar with the Slant 6 and known to do good work?
I am looking to have the deck and head milled to raise the compression & larger valves (unsure of the size just yet, I'd like to increase size but no sense in trying to go max size if the head cant flow for it anyways lol)

 

[RustyRatRod]

The 1.7 and 1.44 are the go to oversized valves for the slant six. Call SI Valves. They have them. Around 170 bucks a set if I remember right. SIValves | Your Best Resource For Valvetrain Components

 

[JDMopar]

Ain't nothing special about a slant six as far as machine work. A head's a head and a block deck is a block deck. Any competent machine shop should be able to handle it. I'm not sure if the place in the link below is anywhere close to you, but I have watched a lot of their You Tube videos and they know their stuff.

Introduction / Meet the Team

IntroductionJim's Automotive Machine Shop, Inc. (JAMSI) was opened in January 1983 by Jimmie Wolfrum. Since that time, the shop has provided complete engine machining services to it's customer base. In addition to the engine machining services provided, JAMSI maintains an online presence as an...

jamsionline.com

 

[dddDuster]

Depends on where you are in Colorado. JAMSI has a decent name, but is in Gill in NE Colorado. GEMS (Greeley engine machine shop) has a good name in Greeley, but might not want to mess with a cast iron head, they are working on tons of rice rockets these days. Ridge Reamers in Denver is very good, but you will wait to get in the door.

 

[ec_co]

Area Automotive Machine on Federal is doing my block and head now and oddly enough another slant was dropped off 3 days before mine. Dropped it off about a month ago and they are just about finished

 

[timk225]

I did a little mathing, and comparing the 1.625 and 1.700 intakes showed a 4.6% gain in surface area. The exhausts going from a 1.375 to a 1.44 was 4.7%. For my application, which is a mild street motor, I don't think it would be worth the cost. I'll just replace the springs and valve stem seals, do my own port work, and good enough.

 

[Killer6]

I did a little mathing, and comparing the 1.625 and 1.700 intakes showed a 4.6% gain in surface area. The exhausts going from a 1.375 to a 1.44 was 4.7%. For my application, which is a mild street motor, I don't think it would be worth the cost. I'll just replace the springs and valve stem seals, do my own port work, and good enough.

At a reasonably safe 89% intake throat area, the gain is 10%, the curtain area would be up ~5%. But the gain is more than the sum of the basic math, the seat geometry & bowl form possible w/the larger valve won't be poss. with stock dia. units.
Jim K6