Go Back  Offshoreonly.com > Technical > General Q & A
Thunderbolt V. >

Thunderbolt V.

Notices

Thunderbolt V.

Thread Tools
 
Old 04-04-2026 | 02:26 PM
  #1  
Thread Starter
Registered
 
Joined: Apr 2026
Posts: 12
Likes: 0
From: Lake elsinore.
Default Thunderbolt V.

New member here lots of killer info. Just cant find what im looking for.

Currently about to finish off my 525sc blower setup on 454 mag motor in my 21ft laveycraft. I see everyone recommended the v6-14 module for the thunderbolt VI system.

My question is is this the same concept for the thunderbolt V? Can I get a 4.3 module and it only advance about 10 degrees on my V8 like the v6-14.

Thanks guys appreciate all of you guys.


Last edited by Blownlavey; 04-04-2026 at 04:00 PM.
Blownlavey is offline  
Reply
Old 04-04-2026 | 05:39 PM
  #2  
waybomb's Avatar
Registered
Active Streak: 30 Days
Active Streak: 60 Days
Active Streak: 90 Days
20 Year Member
 
Joined: Jan 2004
Posts: 719
Likes: 141
From: South of the North Pole
Default

If not, I have a number of brand new TBIV distributors, wires and v16 modules and wire harnesses available.
waybomb is offline  
Reply
Old 05-16-2026 | 08:12 PM
  #3  
Thread Starter
Registered
 
Joined: Apr 2026
Posts: 12
Likes: 0
From: Lake elsinore.
Default

Ended up going with a msd 6460 box. Locked out at 26 degrees.
Blownlavey is offline  
Reply
Old 05-17-2026 | 05:19 PM
  #4  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,271
Likes: 2,512
From: Omaha/LOTO
Default

Originally Posted by Blownlavey
Ended up going with a msd 6460 box. Locked out at 26 degrees.
26* total timing??? That is not nearly enough. Needs 32-34* total.
Griff is offline  
Reply
Old 05-17-2026 | 08:03 PM
  #5  
Thread Starter
Registered
 
Joined: Apr 2026
Posts: 12
Likes: 0
From: Lake elsinore.
Default

9.0:1 compression stock on this l29 gen VI motor. With the blower thats about 12.5:1 on 91 i figured 26 would be good and safe let me know griff.
Blownlavey is offline  
Reply
Old 05-18-2026 | 12:25 AM
  #6  
Registered
Community Builder
5 Year Member
 
Joined: Aug 2019
Posts: 1,247
Likes: 420
From: BC
Default

Originally Posted by Blownlavey
9.0:1 compression stock on this l29 gen VI motor. With the blower thats about 12.5:1 on 91 i figured 26 would be good and safe let me know griff.
The Gen VI BBC heads (279 casting) are very fast burning chambers.

29° max adv is all that is required to put the peak cyl pressure at 15° ATDC.

That being said...the optimal peak timing curve is not linear. 26° is getting very late.

Fast burning chambers are not good with boost. They are very unforgiving. If you're only going 5-6psi...not a much of an issue, but it will be a factor that stacks up.

Late timing also heats up the exhaust valve and port. Not something you want with boost.
Tartilla is offline  
Reply
Old 05-18-2026 | 01:58 AM
  #7  
Thread Starter
Registered
 
Joined: Apr 2026
Posts: 12
Likes: 0
From: Lake elsinore.
Default

Thank you for all that info! So your saying bump the timing up a few degrees?

I have Set of edelbrock 6055 heads that I can put on and a como 01-456-8 cam aswell that can go in just got the whole 525sc blower setup running a few weeks ago and flgetting it dialed in better but already wanting a little more outta it.
Blownlavey is offline  
Reply
Old 05-18-2026 | 08:00 AM
  #8  
SB
Registered
20 Year Member
 
Joined: Nov 2004
Posts: 14,140
Likes: 3,708
From: On A Dirt Floor
Default

Originally Posted by Blownlavey
Ended up going with a msd 6460 box. Locked out at 26 degrees.
What distributor ?
SB is offline  
Reply
Old 05-18-2026 | 08:43 AM
  #9  
Thread Starter
Registered
 
Joined: Apr 2026
Posts: 12
Likes: 0
From: Lake elsinore.
Default

Msd 85501
Blownlavey is offline  
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.