View Poll Results: What compression ratio got you to the 800RWHP please post which: turbo or centrifugal

8.5-8.7

10.71%

8.8-9.0

16.07%

9.1-9.3

26.79%

9.4-9.6

23.21%

9.7-9.9

1.79%

10.1+

21.43%

Voters: 56. You may not vote on this poll

Poll: What compression are you running at +/- 800RWHP?

Reply Subscribe

Thread Tools

Search this Thread

Sep 25, 2009 | 12:34 PM

#21

Inspector12

TT-TECH Veteran

iTrader: (29)

Joined: Mar 2003

Posts: 4,779

Likes: 4

From: Pearland

7.8:1 here with the procharged 347ci motor. Only acctually seen 826rwhp at 4800 so I don't know what is makes with fuel now on 93 as usual.

Sep 25, 2009 | 01:07 PM

#22

venom ws7

11 Second Club

iTrader: (13)

Joined: Jul 2003

Posts: 5,965

Likes: 1

From: EARTH

8:5 Compression here highest numbers in my sig but I'm shooting for 800rwhp with the new setup not on pump gas though 16-18psi.

Quote:

Originally Posted by Inspector12

7.8:1 here with the procharged 347ci motor. Only acctually seen 826rwhp at 4800 so I don't know what is makes with fuel now on 93 as usual.

Your the 1st one I see with under 8:5 comprssion with Procharger I remember 1DirtyZ Ran 8:5 but he sprayed it too.

How much boost are you running those are awesome numbers with 347ci and only 4800rpm!!!

Sep 25, 2009 | 01:25 PM

#23

ChevyChad

8 sec potential, 12 sec slip

iTrader: (50)

Joined: Apr 2002

Posts: 4,092

Likes: 2

From: Savannah, GA

Wow! What an interesting thread! The results are quite surprising to me too seeing them so far spread apart.

Sep 25, 2009 | 03:00 PM

#24

Inspector12

TT-TECH Veteran

iTrader: (29)

Joined: Mar 2003

Posts: 4,779

Likes: 4

From: Pearland

Quote:

Originally Posted by venom ws7

8:5 Compression here highest numbers in my sig but I'm shooting for 800rwhp with the new setup not on pump gas though 16-18psi.

Your the 1st one I see with under 8:5 comprssion with Procharger I remember 1DirtyZ Ran 8:5 but he sprayed it too.

How much boost are you running those are awesome numbers with 347ci and only 4800rpm!!!

Yeah while I have taken lots of advice and picked peoples brains over the years I still have a few ideas that I test and this was one of them. I think it was about 18lbs at that point in the RPM's and 16* of timing. I am sure that there are a ton of different ways to slice bread, I still like to try different ways lol. No real ***** down low allows for some good traction for the car to get motivated before the power hits hard lol! It would suprise some how effective it is.

Sep 25, 2009 | 09:09 PM

#25

elias_799

TECH Addict

iTrader: (8)

Joined: Oct 2008

Posts: 2,047

Likes: 2

From: toronto ontario canada

^^^ what kind of rims are those on the blue ss you got? if you do not mind me asking

Sep 25, 2009 | 09:14 PM

#26

Inspector12

TT-TECH Veteran

iTrader: (29)

Joined: Mar 2003

Posts: 4,779

Likes: 4

From: Pearland

On my BLACK SS those are Bogart in my signature.

Sep 26, 2009 | 06:32 AM

#27

FI402Z

Thread Starter

Teching In

Joined: Sep 2009

Posts: 27

Likes: 0

Thanks again for the votes guys! Inspector, didn't mean to leave you off the chart. LOL I can surely say that I am no closer to a firm CR decision now..... HAHA

Sep 26, 2009 | 10:03 AM

#28

ChevyChad

8 sec potential, 12 sec slip

iTrader: (50)

Joined: Apr 2002

Posts: 4,092

Likes: 2

From: Savannah, GA

Quote:

Originally Posted by FI402Z

...I can surely say that I am no closer to a firm CR decision now..... HAHA

LMAO! Yea, with these results, I can't imagine this thread did ya any good at all

LS1 Tech Stories

The Best V8 Stories One Small Block at Time

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

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

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Sep 26, 2009 | 04:07 PM

#29

Inspector12

TT-TECH Veteran

iTrader: (29)

Joined: Mar 2003

Posts: 4,779

Likes: 4

From: Pearland

Quote:

Originally Posted by FI402Z

Thanks again for the votes guys! Inspector, didn't mean to leave you off the chart. LOL I can surely say that I am no closer to a firm CR decision now..... HAHA

Not a problem I just didn't get to vote

lol! On the turbo car it is @ 8.2:1 so I guess I could have put that one in there. Still over all I go lower than most and this poll backs that up, but I do continue to run on 93 so I shoot for the lower side and it allows me some aggressive tunning if I want and No2 as an option etc... I do have meth kits I haven't run them in a while, but alway planning on installing them when I get busy with everyday stuff and other people's cars got another one in a few days ago. Its and 01SS Speed Inc. built back a few years ago. A few things don't seem like Speed Inc. quality so I can't confirm all, but some of this stuff looks like a 5th grader did it. But you know how that is you never know the whole story behind someone else's project.

Sep 26, 2009 | 04:49 PM

#30

Blown Vette

Teching In

Joined: Oct 2004

Posts: 9

Likes: 0

This might help you make up your mind. It is from Procharger.

Sep 26, 2009 | 05:18 PM

#31

kikass_z28

On The Tree

Joined: Dec 2008

Posts: 109

Likes: 0

From: Lino Lakes, MN

It comes down to low compression and high boost or higher compression and less boost. Then you have to decide if you want to run meth or not as well. So many variables its crazy to see the differences in everyones builds. Great thread!

Sep 26, 2009 | 10:55 PM

#32

bluehawk2

10 Second Club

iTrader: (74)

Joined: Oct 2005

Posts: 1,439

Likes: 2

From: Tupelo, MS

i just found out that a shortblock I purchased on here is going to be 8.1, so i guess I will be able to run some really aggressive timing on pump gas no meth.

Sep 28, 2009 | 01:12 AM

#33

lt1camaroman93

FormerVendor

iTrader: (7)

Joined: Dec 2004

Posts: 373

Likes: 0

Quote:

Originally Posted by kikass_z28

Why not higher compression and lots of boost

? I think it all boils down to exactly what the build is for. Street motor with pump gas, low comp wins unless E85 is readily available. Race geared motor, higher comp with good gas. Also depends on what kinda block/head combo you're gonna run.

Sep 28, 2009 | 04:30 AM

#34

FI402Z

Thread Starter

Teching In

Joined: Sep 2009

Posts: 27

Likes: 0

Guys, thanks again for the votes! All your input is greatly appreciated. Looks like the majority is starting to level off in the 9.0-9.5 range.

Sep 30, 2009 | 07:49 PM

#35

FI402Z

Thread Starter

Teching In

Joined: Sep 2009

Posts: 27

Likes: 0

Getting quiet in here......

Sep 30, 2009 | 07:56 PM

#36

ChevyChad

8 sec potential, 12 sec slip

iTrader: (50)

Joined: Apr 2002

Posts: 4,092

Likes: 2

From: Savannah, GA

44 votes seems like a lot of guys are running 800 HP!

Thats a buttload more votes than I thought this thread would get! Wonder how many voters actually are in the range they claim to be in lol

Sep 30, 2009 | 09:56 PM

#37

vaticano

TECH Enthusiast

iTrader: (8)

Joined: Feb 2006

Posts: 524

Likes: 0

From: Denver Colo.

I run E-85, but this is what I've got. 11.3:1 with a small cam (224/220) 4.0 inch blower pulley netted me 750 corrected.
I'm currently building a new 347 with a bigger cam 3.4 in pulley and about 13:1, results pending.

Oct 1, 2009 | 01:31 PM

#38

LT1TA

TECH Enthusiast

iTrader: (17)

Joined: May 2004

Posts: 667

Likes: 0

From: GA

so if i had a forged 6L (hopefully 402/8) motor built with about 8-8.5:1 cr, would it give me problems or ride too much like crap if it took me a while to get the procharger installed? If it was tuned without boost, would this make it safer? sorry f1402Z for hijacking