LT1-LT4 Modifications 1993-97 Gen II Small Block V8

picking up lt1 compression

Old Jun 16, 2009 | 03:25 AM
  #1  
unfaded's Avatar
Thread Starter
Teching In
 
Joined: Jan 2009
Posts: 7
Likes: 0
Default picking up lt1 compression

Have a 383 lt1 forged -5cc mahle flat tops with 208cc intake /65cc canfield heads. 238/246 @ .050".567/.567 lift (.604/.604 w/ 1.6 rockers)108 LSA m6 3.73s with all supporting mods longtubes 58mm tb ect ect.
Just wanting input on how to finish the build, should i mill the heads down? Would i be safe to add boost? I want to make the max power possible. Without swapping the pistons. Let me know what you think, my best bet would be. i dont mind running octane boost and 94. thanks in advance.


Also i will be running a ported super vic "e" manifold with the nitrous works elbow, has anyone had any exp with the msd pro billet distributor, i dont mind cutting a hole in the cowl/dash. or would it be better to stick with the opti?
Reply
Old Jun 16, 2009 | 04:30 AM
  #2  
myltwon's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jul 2004
Posts: 2,965
Likes: 7
From: Palm Harbor, FL
Default

with -5cc pistons in my 383 build, that put me around 12:1 SCR with a 54cc head. with a 64cc that'll put you around 10.7:1 SCR give or take. that wouldn't be a boost friendly build especially with that cam with a 108 LSA. I'd recommend looking into running the impy head gasket or milling the heads to bump the compression to atleast mid 11's. don't waste time and money on octane booster, either get real gas, meth, alky, etc. but as long as you keep the DCR relatively safe you shouldn't have to worry about that unless you're running a healthy shot on top, my 12:1+ SCR motor runs on 93
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 01:33 AM.

story-0
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-1
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-2
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-3
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-4
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-5
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-6
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-7
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE
story-8
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE