Author Topic: Which 350?  (Read 8125 times)

Offline Ronno6

  • Frequent Member
  • **
  • Posts: 290
  • Elder Student
Which 350?
« on: October 06, 2018, 07:47:57 AM »
Should I forgo my notion of hopping up my 305 and follow the most popular suggestion of going to a 350,
the huge question becomes:

What 350 to start with??

I want NO computers, hence NO fuel injection.
I want a 1 piece rear main so I don't have to purchase a new flywheel.

Should I be looking for a Vortec engine?
 
You can lead a man to water, but yoiu can't keep him from pissing in it.

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 13319
  • Family is not an important thing. It's everything.
Re: Which 350?
« Reply #1 on: October 06, 2018, 08:34:05 AM »
well you say you dont want a computer but you want a vortec? also a true vortec is a 96+ year. personally i would go for a TBI truck, if not i wouldnt really care what 350 i went with, but it would also depend on your future plans on upgrades or if you plan on just building it.
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Ronno6

  • Frequent Member
  • **
  • Posts: 290
  • Elder Student
Re: Which 350?
« Reply #2 on: October 06, 2018, 09:09:52 AM »
well you say you dont want a computer but you want a vortec? also a true vortec is a 96+ year. personally i would go for a TBI truck, if not i wouldnt really care what 350 i went with, but it would also depend on your future plans on upgrades or if you plan on just building it.

The Vortec was posed in the form of a question...
I am of the impression that Vortec engines can be carbureted with the proper manifold.
Can a Vortec engine be successfully operated without an ECM ?

As for plans, I want to build it and drive it.
Headers,cam and intake.
I am not up on Vortec heads/valves, but they are constantly named as good performing heads.
You can lead a man to water, but yoiu can't keep him from pissing in it.

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 13319
  • Family is not an important thing. It's everything.
Re: Which 350?
« Reply #3 on: October 06, 2018, 11:12:09 AM »
you also have the option of stroking your motor (305) or stroking a 350 to a 383

305 stroker kit should bring you to 334 (prob a waist of money)
https://www.hotrod.com/articles/ccrp-1002-305-engine-build-questions-much-more/

350 stroker will be a 383 
if memory serves me right years ago i was looking at a stroker kit for a 350 and it would cost about 800
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Henry

  • Frequent Member
  • **
  • Posts: 331
Re: Which 350?
« Reply #4 on: October 06, 2018, 12:30:17 PM »
Hi Ronno6:
See:
https://www.gmperformancemotor.com/parts/12681429.html

If you want more performance, check out the other engines at this website...at about $500 increment increases in price you get higher performance.

Regards,
Henry

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 13319
  • Family is not an important thing. It's everything.
Re: Which 350?
« Reply #5 on: October 06, 2018, 02:07:36 PM »
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Ronno6

  • Frequent Member
  • **
  • Posts: 290
  • Elder Student
Re: Which 350?
« Reply #6 on: October 06, 2018, 08:15:39 PM »
I recon I'll be looking for a 350 which is set up for a mechanical fuel pump...............
You can lead a man to water, but yoiu can't keep him from pissing in it.

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 13319
  • Family is not an important thing. It's everything.
Re: Which 350?
« Reply #7 on: October 06, 2018, 08:40:31 PM »
One with a mechanical fuel pump provision.
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 18980
Re: Which 350?
« Reply #8 on: October 06, 2018, 10:10:35 PM »
A Vortec roller cam 350 is a fine specimen. Put a carbureted intake on and roll out. The pink truck has a vortec 350 and it will light the tires in all gears...
,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Ronno6

  • Frequent Member
  • **
  • Posts: 290
  • Elder Student
Re: Which 350?
« Reply #9 on: October 08, 2018, 07:12:47 PM »
The local machine shop said he could do the required machining to put a mechanical fuel pump on a vortec (or other non-mechanical pump) block for $25.00

Anybody heard of this??
You can lead a man to water, but yoiu can't keep him from pissing in it.

Offline Stewart G Griffin

  • Senior Member
  • ****
  • Posts: 3324
Re: Which 350?
« Reply #10 on: October 09, 2018, 02:24:06 AM »
The local machine shop said he could do the required machining to put a mechanical fuel pump on a vortec (or other non-mechanical pump) block for $25.00

Anybody heard of this??

i've heard of this, but does he have CNC machine to do it or the appropriate jig?

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 13319
  • Family is not an important thing. It's everything.
Re: Which 350?
« Reply #11 on: October 09, 2018, 03:24:43 AM »
Cnc and a $25 bill doesn't really add up. Sounds like a drill and drill bit, never heard of this but there's plenty I haven't heard of
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 18980
Re: Which 350?
« Reply #12 on: October 09, 2018, 04:37:50 AM »
$25 is cheap, make sure they are reputable and know what they are doing. I would assume they are only charging $25 as an add on to other work already being done.
,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 75gmck25

  • Frequent Member
  • **
  • Posts: 439
  • 1975 GMC K25 Camper Special, 350/TH350/NP203
Re: Which 350?
« Reply #13 on: October 09, 2018, 07:14:19 AM »
There are aftermarket 350 crate engines that have 1 piece RMS, Vortec heads, and provision for mechanical fuel pump.  I know there are a couple from Blueprint, and probably ATK has similar configurations.  However, buying a complete new crate engine puts you in the $2200-2600 range, and it sounds like you are on a relatively tight budget.

This engine has everything you want, plus a roller cam, and they will dyno it to verify its 373 horsepower. https://blueprintengines.com/collections/gm-compatible-small-block-crate-engines/products/gm-350-with-vortec-heads-roller-cam-1pc-rms
Just drop it in and go.

Bruce

Offline Ronno6

  • Frequent Member
  • **
  • Posts: 290
  • Elder Student
Re: Which 350?
« Reply #14 on: October 09, 2018, 08:15:41 AM »
The local machine shop said he could do the required machining to put a mechanical fuel pump on a vortec (or other non-mechanical pump) block for $25.00

Anybody heard of this??

i've heard of this, but does he have CNC machine to do it or the appropriate jig?

I need to visit his shop to see his equipment.
He did say that he would get the jig, as he receives this requested modification from time to time.
He does seem to know what he is talking about...
You can lead a man to water, but yoiu can't keep him from pissing in it.