L31 swap in progress

Status
Not open for further replies.

Supercharged111

Comic Book Super Hero
Oct 25, 2019
4,934
7,716
113
Colorado Springs, CO
What is your thoughts on the 705 (LT1) camshaft or the 94666492 marine camshaft?

He already has the marine cam, that's the 395 cam. I did my 395 cam with 1.6s though. Since I did both at once, I can't say which one is worth more than the other, but the 2 combined were a nice bump for sure.
 
  • Like
Reactions: 1 users

Gwarren79

G-Body Guru
Oct 29, 2018
711
1,549
93
Safford, AZ
He already has the marine cam, that's the 395 cam. I did my 395 cam with 1.6s though. Since I did both at once, I can't say which one is worth more than the other, but the 2 combined were a nice bump for sure.
I got that. Yav8 was said to be very knowledgeable on the L31 and was asking input on these 2 cams. One better for our cars?
 

scoti

Royal Smart Person
Sep 5, 2019
1,979
3,404
113
Texas
I recently came across an L31 stroked short-block w/some hyper flat-tops & was thinking about doing some horse-trading for it after reading about @John85SS swap.

It was put together by a GM tech as a budget HT383 copy (traditional 4.030/3.75 & the 395 cam vs the 4.005/3.80 set-up). I thought about swapping in the GM 'Hot' cam the LT4's came w/along w/the 190 AFR heads I have. Seems that would be a fairly strong yet mild DD capable power-plant. The additional cubes would appreciate a little more lift & duration while keeping w/the L31 Vortec crispness.
 

NJ Longroof

Random guy
Feb 27, 2020
387
979
93
I recently came across an L31 stroked short-block w/some hyper flat-tops & was thinking about doing some horse-trading for it after reading about @John85SS swap.

It was put together by a GM tech as a budget HT383 copy (traditional 4.030/3.75 & the 395 cam vs the 4.005/3.80 set-up). I thought about swapping in the GM 'Hot' cam the LT4's came w/along w/the 190 AFR heads I have. Seems that would be a fairly strong yet mild DD capable power-plant. The additional cubes would appreciate a little more lift & duration while keeping w/the L31 Vortec crispness.
That is a pretty popular setup (lt4 hotcam) and is what I would like to do with my l31.
 

Supercharged111

Comic Book Super Hero
Oct 25, 2019
4,934
7,716
113
Colorado Springs, CO
I got that. Yav8 was said to be very knowledgeable on the L31 and was asking input on these 2 cams. One better for our cars?

In a car I'd do the LT1 cam myself. They make excellent torque and don't fall off the face of the earth after peak hp like the 395.
 
  • Like
Reactions: 1 user

Yav8

Master Mechanic
Aug 19, 2014
277
121
43
Manitowoc wis.
What is your thoughts on the 705 (LT1) camshaft or the 94666492 marine camshaft?
What are the specks on the 705 (LT1) cam or the 492. I have not used any of these cams myself. But I sure would like to hear about them. Is the 705 cam the stock LT1 cam?
 

Gwarren79

G-Body Guru
Oct 29, 2018
711
1,549
93
Safford, AZ
What are the specks on the 705 (LT1) cam or the 492. I have not used any of these cams myself. But I sure would like to hear about them. Is the 705 cam the stock LT1 cam?
Yes. 122551705

138983d1179962911-lt1-camshaft-part-number-lt1_cams.gif


492 same as Crane 2032

49744461721_5cb87c0c32_o_a5d8fa83585253581f352a2373b2bf291f32d812.jpg
 

Yav8

Master Mechanic
Aug 19, 2014
277
121
43
Manitowoc wis.
Never did anything with the 705 cam. Try it and tell us how it worked out. Mite be a few of those cam laying around for free or very cheap. Could work with a set of stock vortec heads. I do know how the 395 cams works in the L31 motors. Even the stock L31 cam from the factory works very well. It move a 5-6000lb truck around very good so why not a 3500lb Gbody. It comes with the motor and its FREE. Through on a set of 1.6 rockers if you like and give it a little more lift and see how you like it.
 
  • Useful
Reactions: 1 user

John85SS

Apprentice
Jan 19, 2021
70
122
33
I can tell you all.. if you are not ready for the limited pain that an LS swap is.. the Vortec is pretty painless . I may do the LS at some point but I am old and like old school.
 
  • Like
Reactions: 2 users

John85SS

Apprentice
Jan 19, 2021
70
122
33
Shot with primer. 2 days of sanding…. Shoved outside to see if I missed anything.
 

Attachments

  • 15C48687-5841-4A49-A47F-6935410B3CC8.jpeg
    15C48687-5841-4A49-A47F-6935410B3CC8.jpeg
    2.4 MB · Views: 69
  • F8FDDEE3-FE3C-430D-9B2B-C98124B3CEA2.jpeg
    F8FDDEE3-FE3C-430D-9B2B-C98124B3CEA2.jpeg
    1.8 MB · Views: 82
  • D804BF48-2F10-441F-9F98-70C30FA43ED8.jpeg
    D804BF48-2F10-441F-9F98-70C30FA43ED8.jpeg
    1.7 MB · Views: 82
  • 53B30C4A-5CB0-443C-ACC0-689971BC17A5.jpeg
    53B30C4A-5CB0-443C-ACC0-689971BC17A5.jpeg
    1.3 MB · Views: 81
  • 75909A03-0F15-4808-A3FC-112F913E4168.jpeg
    75909A03-0F15-4808-A3FC-112F913E4168.jpeg
    1.6 MB · Views: 70
  • Like
Reactions: 3 users
Status
Not open for further replies.

GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.

Please support GBodyForum Sponsors

Classic Truck Consoles Dixie Restoration Depot UMI Performance

Contact [email protected] for info on becoming a sponsor