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08-02-2006, 11:26 PM
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#1
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14 Second Club
Join Date: Aug 2004
Location: RUM$ON, NJ
Posts: 2,308
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Question about getting blown.
Didnt really want to post this here. It was supposed to be a supprise car. Oh well, I need the advice.
I am going to be building a race motor. I am going with 540CI. With the 540CI, Ill be looking at around 8.5:1 compression with a set of 119CC heads. I am looking to throw an 8-71 Weiand blower (Id LOVE to do 12-71, but funds do not permit me to). N/A I am aiming for between 700-800HP (not sure with the lower compression).
Would 8.5:1 be too high/low to run an 8-71 w/ around 8lbs? I was shooting for ~1,000HP, but whatever I end up, will be fine for now.
This is what the short block looks like as of now.
Quote:
Dart Big M 9.8 Deck Nodular Caps 4.500
SRP Pistons Forged 1.27 CH Flat Top 8.5:1
Eagle 4340 Forged steel internal Balance Crankshaft 4.25 Stroke
Eagle 4340 Forged Steel H beam rods 6.385 length ARP 8740 Bolts
King Alecular Pro Race Bearings Rods and Mains
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I have not purchased these parts yet. I was looking at a set of BBC AFR heads (119 CC).
Also shooting for 5 MPG N/A, 3 MPG Blown (with a 12gal fuel cell thats only ~36-50 miles to a TANK)
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Originally Posted by The Fapist
K0ll is a hick and has a veritable fleet of 1980-early 90's GM vehicles :mullet:
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08-02-2006, 11:50 PM
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#2
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Banned Camp Director Emeritus
Join Date: Aug 2004
Location: Somerset County
Posts: 8,395
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8.5:1 should be okay with 8 lbs as long as you run the right fuel and have the timing straight.
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Quote:
Originally Posted by baddest434
and 1 more smart ass answer by you and i'm going to reach into this monitor and grab you by the throat
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08-03-2006, 12:55 AM
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#3
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Join Date: Mar 2006
Location: sayreville nj
Posts: 2,175
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iron or alum heads?
9.0-1 is realy as high as u should go and still be safe
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#1 1989 RS - 3.0L V6 11.0-1 CR, LIGHTENED CRANK,J.E FORGED PISTONS, CUSTOM 280/284 .575/.575 116LSA ROLLER CAM, PORTED HEADS, PORTED INTAKE,CUSTOM TURBO KIT W/ BW S475,AW INTERCOOLER,METHANOL INJECTION, TCI STREETFIGHTER 700R4 W/ TCI 4,500 STALL,TWIN WALBORO 255'S & 83# INJECTORS
268 rwhp & 367.6 ftlbs @ 10 psi 3.1l
12.30's @ 112 3.1L @ 9 psi
??.?? @ ???? 3.0L @ 18 PSI
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08-03-2006, 06:11 AM
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#4
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14 Second Club
Join Date: Aug 2004
Location: RUM$ON, NJ
Posts: 2,308
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For the heads, I dont know if I am going to go alumn right off the bat, but evuntally Ill be getting a set of AFR Alumns.
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Quote:
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Originally Posted by The Fapist
K0ll is a hick and has a veritable fleet of 1980-early 90's GM vehicles :mullet:
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08-03-2006, 08:57 PM
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#5
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Join Date: Aug 2004
Location: Blackwood
Posts: 473
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There are so many comments I could make based on the thread title...
__________________
The tree on the mountain always looks taller when the grass is mowed.
Daily Driver: 2011 Ford Expedition EL (4 very tall kids means suck it up for a while)
Crisis Car: 1986 Chevy Camaro IROC: 5.0L 4BBL Carb, 5-speed, T-tops, "Good afternoon officer how fast was I going" red.
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08-04-2006, 02:47 AM
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#6
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2007 Member of the Year
Join Date: Oct 2004
Location: Seabrook, TX
Posts: 14,281
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Quote:
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Originally Posted by Oddball
There are so many comments I could make based on the thread title...
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I think that's what jolly green giant intended...
__________________
WF=DF
Kommandant of the ACL (Anti Canadian League)
Quote:
Originally Posted by LTb1ow
Junk the pos, spend the money on beer, acquire headache.
Same result cept this headache doesnt last months.
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08-04-2006, 08:17 AM
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#7
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.
Join Date: Feb 2006
Posts: 1,385
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Quote:
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Originally Posted by Koll
Didnt really want to post this here. It was supposed to be a supprise car. Oh well, I need the advice.
I am going to be building a race motor. I am going with 540CI. With the 540CI, Ill be looking at around 8.5:1 compression with a set of 119CC heads. I am looking to throw an 8-71 Weiand blower (Id LOVE to do 12-71, but funds do not permit me to). N/A I am aiming for between 700-800HP (not sure with the lower compression).
Would 8.5:1 be too high/low to run an 8-71 w/ around 8lbs? I was shooting for ~1,000HP, but whatever I end up, will be fine for now.
This is what the short block looks like as of now.
I have not purchased these parts yet. I was looking at a set of BBC AFR heads (119 CC).
Also shooting for 5 MPG N/A, 3 MPG Blown (with a 12gal fuel cell thats only ~36-50 miles to a TANK)
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AFR heads work way better un shrouding the valves in a blower motor, your pumping it any way so it does not matter static compression wise, i would talk to them they are real helpfull -- my guess 125 / 135 cc combustion chambers --- the cnc stuff on heads if you buy up one size and leave ports alone no CNC ( as cast ) just do the chambers its 800 /900 cheaper as a dealer to do retail ?? -- 8 1/2 to 1 and a blower will take a 3 plus HP starter 4 - 45 ratio and double 1000 amp battries, keep that in mind with balancing out the trunk its 100 to 125 pounds you get to move around, see how car leaves with film ( movie ) than put them perm --- cam and carb injection ????? bird catcher alky will be the best deal --- run cooler and its 2 to 3 tenths faster, shaft rockers will be a must the blowers snap the motor so hard most brake off roller rockers studs even with stud supports -- low 9s high 8s or is car like 1500 lbs ( 7 / 800 HP ) is easy -- the last 540 i put together for Buster has AFRs 335 748 748 comp roller same type lower unit except 38 cc dome pistion 124 cc chambers 1050 carb on gas not Alky 2 speed glide 456 diff 16-33 tires runs mid 8s in 90 deg weather 163 MPH we will be at Island for the Carols on the 13th Aug sunday it a gen 3 i think jz
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08-05-2006, 07:24 PM
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#8
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13 Second Club / Moderator
Join Date: Jan 2005
Location: Franklin Lakes, NJ
Posts: 8,694
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i would look into a set of trick flow heads. they have been making some good numbers over on LS1tech and are a little better priced then the AFRs.
http://www.trickflow.com/product/che..._r_bbchevy.asp
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Quote:
Originally Posted by LS1ow
Except Jersey mike, great kid, but the way he looks at me makes me feel like im in danger
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Last edited by qwikz28; 08-05-2006 at 07:26 PM.
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08-05-2006, 07:38 PM
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#9
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Join Date: Feb 2006
Posts: 1,385
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Quote:
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Originally Posted by qwikz28
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it is also true the AFRs are national back order they are so pop its 6 to 8 weeks at the very min but trick flows are in stock jz
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