5.3 bored and stroked? - Third Generation F-Body Message Boards

Go Back   Third Generation F-Body Message Boards > Tech Boards > Engine Swap > LTX and LSX

LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

5.3 bored and stroked?

Thread Tools Search this Thread
Old 03-17-2007, 01:50 AM   #1
Senior Member
jak2908's Avatar
Join Date: Jul 2006
Posts: 363
Car: 89 RS,89 iroc
Engine: 5.0,5.0tpi
Transmission: 700R4,700R4
Axle/Gears: LSD,LSD

Classifieds Rating: (0)
Send a message via MSN to jak2908
5.3 bored and stroked?

who knows how big you can punch those out safely and how long they can stroke??...or just wondering if it would be better to go with the 6.0 block out of a HD chevy pickup...thanks!
go big or go home!!!!!
jak2908 is offline vBGarage Page   Reply With Quote
Old 03-17-2007, 03:05 PM   #2
Junior Member
Join Date: Mar 2007
Posts: 27

Classifieds Rating: (0)
Cool idea. This is the exact set up I plan on doing in my third gen firebird. From what I understand is you can bore a 5.3 iron block to accept LS1 pistons and rods. that's I think 3.90xxx, or in that range. Make sure the 5.3 is iron though, because the aluminum 5.3s have a very thin wall and unless you plan on resleeving, you can't bore them out at all. Also, the iron block is a little bit stronger so if you plan on going forced induction at any point, it would be a good place to start. People have been boring out their 5.3s to accept forged LSX pistons and rods for a total engine build of under 3 grand. Also, with the 5.3s smaller ports you get a higher compression ration ( people often swap 5.3 heads onto LS1s/2s for higher compression). With this setup, expect ~400-415 RWHP with around equal TQ.
raceclean is offline vBGarage Page   Reply With Quote
Old 03-20-2007, 05:29 AM   #3
Senior Member
Join Date: May 2003
Location: Houston-katy
Posts: 987
Car: 1986 Irocz- Houstons Fastest Street
Engine: 408 LS1 w/ 2 stage
Transmission: Turbo 350
Axle/Gears: 3:73,3850 lbs , best of 9.92 @ 138

Classifieds Rating: (0)

Send a message via AIM to xtremeirocz
I have a aluminum 5.3 on a stand right now that i am gonna put in my 07 silverado. The cylinder wall is huge, can be stroked to a 398 with stock sleeves. These aluminum 5.3 's only came in SSR etc. special edition truck stuff. They came with ls-6 style heads and a ls-6 cam. Before I put the 408 in my Iroc, I had a 6 litre block. Ran a 10.9 on a stock 6.0 litre lq-9 with 150 shot
complete callies 408 using 6 litre Iron block= 3900bux for shortblock

Last edited by xtremeirocz; 03-20-2007 at 05:30 AM. Reason: Automerged Doublepost
xtremeirocz is offline vBGarage Page   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Was I too Optimistic ? TPI L98 Power FormulasOnly TPI 41 10-21-2015 08:37 PM
HP increase with flat top & RV cam hartsmike Engine Swap 11 10-02-2015 08:11 AM
Compiling twin turbo 5.3 LS setup customblackbird Power Adders 71 10-01-2015 05:30 PM
tpi swap, fuel system questions dusterbd TPI 0 09-29-2015 09:40 AM
95 LT1 383 GM hotcam FPR required? Strick1 LTX and LSX 2 09-04-2015 08:11 AM

Go Back   Third Generation F-Body Message Boards > Tech Boards > Engine Swap > LTX and LSX

20, 53, 60, big, block, bored, chevy, gen, iron, ls, make, resleeving, safely, strocked, stroked, stroking

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 04:55 PM.

All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.