Distributor mark wont line up

Distributor mark wont line up

Postby sfeaversfeaver is online! [OP] » May 9th 2010, 12:35am

I am putting a L31 350 V8 into my van, and got a LT4 camshaft to go in the motor. Its almost all together, and I go to put in the distributor but it wont line up to the "8" mark right on, its a few degrees before it. One tooth over its past it.

I took off the timing cover and confirmed the dots line up on the gears. It appears that advancing the cam one tooth would put the distributor bang on.

My question, is how accurate is that mark on the distributor? I confirmed on my 4.3 that it is bang on with it at #1 TDC.

Thanks for any advice..

Scott
Original Poster [OP]
sfeaversfeaver is online!
Firing on 5 Cylinders (L1)
Firing on 5 Cylinders (L1)
Years of Membership: sfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full years
Posts: 541
Topics: 22
Joined: June 2009
Location: Hamilton, ON
Gender: Male
Alias (AKA): Scott
Year: 1997
Van Make/Model: Chevrolet Astro
Extra Info: LT RWD 350ci V8

Re: Distributor mark wont line up

Postby LEVE » May 9th 2010, 2:53am

Take a look at cylinder #1. Are both valves closed? They should be.... If they're not, you're not at Zero degrees of the Power stroke.
LEVE
Site Contributor
Site Contributor
Firing on 2 Cylinders (L2)
Firing on 2 Cylinders (L2)
Years of Membership: LEVE has been a member for 4 full yearsLEVE has been a member for 4 full yearsLEVE has been a member for 4 full yearsLEVE has been a member for 4 full years
Posts: 1281
Topics: 18
Joined: March 2010
Location: On the Palouse
Van Make/Model: Chevrolet Astro
Extra Info: AWD 4.3L-W

Re: Distributor mark wont line up

Postby sfeaversfeaver is online! [OP] » May 9th 2010, 3:07am

I think I got it figured out.. I bought an aftermarket aluminum distributer, and its clamp is "fixed" meaning it bolts in one spot.

The factory plastic one isnt, and if turned a bit it lines right up. So I think all I need to do is change clamps and line it up. Too bad I pulled the timing cover back off (and water pump, compressor, ps pump bracket etc) hehe Oh well.

If it sound like i goofed somewhere here please let me know!

Scott
Original Poster [OP]
sfeaversfeaver is online!
Firing on 5 Cylinders (L1)
Firing on 5 Cylinders (L1)
Years of Membership: sfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full years
Posts: 541
Topics: 22
Joined: June 2009
Location: Hamilton, ON
Gender: Male
Alias (AKA): Scott
Year: 1997
Van Make/Model: Chevrolet Astro
Extra Info: LT RWD 350ci V8

Re: Distributor mark wont line up

Postby sfeaversfeaver is online! [OP] » May 9th 2010, 3:09am

Leve: Ya both valves closed. Both timing marks pointing at 12 o'clock. But see my other post, i think i figured it out..

Thanks,
Scott
Original Poster [OP]
sfeaversfeaver is online!
Firing on 5 Cylinders (L1)
Firing on 5 Cylinders (L1)
Years of Membership: sfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full years
Posts: 541
Topics: 22
Joined: June 2009
Location: Hamilton, ON
Gender: Male
Alias (AKA): Scott
Year: 1997
Van Make/Model: Chevrolet Astro
Extra Info: LT RWD 350ci V8

Re: Distributor mark wont line up

Postby sfeaversfeaver is online! [OP] » January 5th 2011, 1:35am

Just to update this for others in case they run into this.. You need to set proper timing with the scan tool. So that 8 mark isnt exact. I was fine in the first place. Also, since the computer handles timing, even being off one tooth the motor runs smooth. I couldnt believe it. Just need to set CMP retard to 0 degrees to clear the check engine light.

Scott
Original Poster [OP]
sfeaversfeaver is online!
Firing on 5 Cylinders (L1)
Firing on 5 Cylinders (L1)
Years of Membership: sfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full yearssfeaver has been a member for 4 full years
Posts: 541
Topics: 22
Joined: June 2009
Location: Hamilton, ON
Gender: Male
Alias (AKA): Scott
Year: 1997
Van Make/Model: Chevrolet Astro
Extra Info: LT RWD 350ci V8


 
  • Related topics
    Replies
    Views
    Last post

Return to V8 Swap

It is currently April 20th 2014, 2:59am

V8 Swap Forum
Swapping A V8 Engine Into An Astro/Safari Van, 8-Cyclinder Upgrade, V8 Conversion, Power Increase, V6 to V8.
Moderator: chevy57bert
To create a new topic in V8 Swap, click this button:
Previous topic Next topic
Recent Image Attachments
Attached by:
Attached by: porkchop350
porkchop350
in V8 Swap
Views: 595
Comments: 15
Date: Apr 16 '14
Time: 3:41pm
» Read last comment
Attached by:
Attached by: porkchop350
porkchop350
in V8 Swap
Views: 595
Comments: 15
Date: Apr 15 '14
Time: 11:55pm
» Read last comment
Attached by:
Attached by: markmitch
markmitch
in V8 Swap
Views: 118
Comments: 2
Date: Apr 11 '14
Time: 4:39pm
» Read last comment
Attached by:
Mmusicman
in V8 Swap
Views: 3354
Comments: 38
Date: Apr 11 '14
Time: 2:40am
» Read last comment
Attached by:
hereticsdetroit
in V8 Swap
Views: 595
Comments: 15
Date: Mar 16 '14
Time: 7:24pm
» Read last comment
Sponsors
 

Who is online

Users browsing this forum: No registered users and 4 guests