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Old 01-04-2010, 01:06 AM
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406 builds

I am looking for dyno numbers for SBC 400 builds using 170cc intake runner heads.

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Old 01-04-2010, 10:37 AM
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check out ryanscarpage.com, they may have done this, i do have to mention that 170cc intake runners are a little low on a 406 but it can work a torque monster
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Old 01-04-2010, 11:00 AM
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Quote:
Originally Posted by my87Z
check out ryanscarpage.com, they may have done this, i do have to mention that 170cc intake runners are a little low on a 406 but it can work a torque monster
I currently have a set of brodix 170cc heads for my 406 and will be using a lunati #00012 camshaft.. It should push my s10 around nicely!
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Old 01-04-2010, 12:22 PM
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yea it will push the s10 around but it will fall of around 4500rpm, but if all you want is a 5000rpm motor with 400 or less hp then they will do just fine, it should creat some tq
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Old 01-04-2010, 04:04 PM
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I had a set of OEM 441 heads with oversized 2.02 1.60 valves on my 406 in the past and it pulled really hard to around 5400 rpm.. not bad for low compression 406 and a set of 155cc intake runner heads! I plan on my 406 turning at least 6000rpm with my new brodix 170cc heads, compression should be right at 11:1 too.
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Old 01-04-2010, 04:22 PM
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You do not want 11:1 for a street engine,with todays gas.
Shane
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Old 01-04-2010, 04:30 PM
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Quote:
Originally Posted by Chevrolet4x4s
You do not want 11:1 for a street engine,with todays gas.
Shane
11:1 with aluminum heads is pushing it with pump gas.. we have access to 93 pump gas here and i'll only play with my s10 on the weekends.. I have a souped up rice burner for my daily. lol..
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Old 01-04-2010, 06:25 PM
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It's ok if you live down the road from the airport . I run my mx bike on avgas its great stuff (and smells good!). Is 93 the highest octane you have at the pump over there? BP has 91 and 98 at stations in New Zealand and all the others have 91 and 95. I think shell in Australia has 100 octane? But I could be wrong.
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Old 01-04-2010, 06:34 PM
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Quote:
Originally Posted by gas_guzzler
It's ok if you live down the road from the airport . I run my mx bike on avgas its great stuff (and smells good!). Is 93 the highest octane you have at the pump over there? BP has 91 and 98 at stations in New Zealand and all the others have 91 and 95. I think shell in Australia has 100 octane? But I could be wrong.
The highest in my town is 91 but in next town over I can get 93 for about the same price!

Just curious on your gas prices for diff octanes? We pay around $2.75 a gallon for 91 at this time..

If I'm not mistaking in japan, honda tunes their high output 4cyl on 103 octane!
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Old 01-04-2010, 06:55 PM
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Quote:
Originally Posted by C-boStyle™
The highest in my town is 91 but in next town over I can get 93 for about the same price!

Just curious on your gas prices for diff octanes? We pay around $2.75 a gallon for 91 at this time..

If I'm not mistaking in japan, honda tunes their high output 4cyl on 103 octane!

I think petrol is about $1.66/litre NZ (91), 95 is usually about 6-7 cents/liter more expensive and 98 about 10 cents/litre more than 91. Avgas (105 from airport) is usually $2-$2.50/litre but it's been a while since I've brought any of these since my v8 is in bits at the moment and my daily driver is a diesel station wagon (diesel is about $1.06/liter but has high tax per km)

So in american language that works out to:
91 octane is $4.60 US per gallon
98 octane is $4.86 "

And v8 parts cost heaps more to buy than america, so rather than filling up at the airport next time I should book a ticket to america so I can drive around in a big block lol. I guess at least we don't have such tough emissions law here. Rather than doing that they just keep adding petrol taxes 'to reduce emissions'
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Old 01-04-2010, 07:34 PM
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Quote:
Originally Posted by gas_guzzler

So in american language that works out to:
91 octane is $4.60 US per gallon
98 octane is $4.86 "

And v8 parts cost heaps more to buy than america, so rather than filling up at the airport next time I should book a ticket to america so I can drive around in a big block lol. I guess at least we don't have such tough emissions law here. Rather than doing that they just keep adding petrol taxes 'to reduce emissions'
WOW! I am sorry to hear that!

I don't ever really have to worry about emissions here where i live. I guess i live in one of the easy places to be a hot rodder.. Maybe the minimum wage to cost in your are makes up for things? Minimum wage here is $7.25 an hour and 91 octane is $2.75 a gallon.. I live in a considerably cheap area.
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Old 01-04-2010, 07:47 PM
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minimum wage here is $12.50 nz was $9.50 4 or 5 years ago. so currently its about $9.10 us.

I have found looking on american job websites that wages don't seem very high. I was considering going to america once I've finished my engineering apprenticeship, but I don't think I can earn more there than I can here (even in my smaller city). So I'll probably just go there on holiday to buy a muscle car or two and a heap of your cheap v8 motors
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Old 01-04-2010, 10:32 PM
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you can get away with 11:1 with the aluminum heads as long as you use a larger cam, one with a wider LSA preferibly to bleed off some of the compression, but with the right cam and the right tune it can be done. i still say that you will have issues running that 406 to 6500 with 170cc runners, not to say you cant do it but if you were to look up the power out puts at those higher rpm i bet the fall off at about 5000-5500 and in a racing situation you should probably shift around 5500, i never cought what rotating assembly you were using but the heavy rotating assemblies from the 400 dont tend to like 6500 either especially if they haven't been balanced to the "T". i'm not saying that it can't be done just that it will only be done but so many times.
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Old 01-04-2010, 10:39 PM
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Here's what I currently have..
'95 reg cab short bed s10, Ladder bar coil over setup stock framerails, 3.73 gears, 275/50-15 drag radials, TH-350, 10" 3500 stall.

Engine..

.030 2 bolt 400 sbc cast# 330817
oem std crank
oem 5.7" rods
hyp. flat top 4 valve relief 4.155" pistons
Brodix aluminum str street heads, 69cc chamber, 170cc int runner, gasket match ported, 2.02 1.60 valves
Lunati #00012 camshaft
Comp Magnum Push rods
Harland sharp 1.6 7/16 Roller rockers
Team G Intake Manifold 2800-7200 model
no carb yet..
All bolts for engine are ARP
MSD pro billet dizzy and 6al box

If you need anymore info just ask.. Thanks for any help!
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Old 01-04-2010, 10:44 PM
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not to be a douch bag but when listing parts please list their specs as well so that we dont have to do research of the parts to help answer the question. i have no idea what the Lunati #12 cam is. please list all of it's specs. this will better help use to recomend or answer questions.
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