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Old 03-21-2014, 10:18 PM
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What i want to be able to do is come into the hole shift from first into second at 6000 rpm and pull threw the hole at 5500 rpm in second gear right now with a different 406 i have ( I know nothing about internally) has tbi heads and from the guy i got it from 9.5 1 compression with this thing i come into the hole run out of steam at 5800 rpm shift into second then play a upshift downshift game the rest of the hole
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  #17 (permalink)  
Old 03-21-2014, 10:36 PM
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Are you ripping across the top of the mud, or are there times the wheels get slowed down???.

I'm thinking now that you've shown what you have ...you need upper mid range and top end power....get the tires flying and never slow them down until you are out the other side???

11.5-1 compression or so, AFR or similar 210's, solid flat tappet cam and let her rip from 5000rpm to 6500 rpm and don't ever lift off the gas. 4000 stall converter. 1-3/4 headers. Is this more up your alley??
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Old 03-21-2014, 10:46 PM
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ericnova72
you are starting to talk up my alley

6.50 gears,
solid roller 260 @ .050 with 102 ICL
850 CFM double pumper on an open plenum intake
put in gear(4500 stall)
foot brake to 2,000 RPM
on go!
stomp throttle,shift,shift,,,hang on for dear life and steer with both hands (keep eyes open)
The mud in your pants might not be from the track,,,,
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Old 03-21-2014, 10:58 PM
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[QUOTE=vinniekq2;2211666]

stomp throttle,shift,shift,,,hang on for dear life and steer with both hands (keep eyes open)
The mud in your pants might not be from the track,,,,[/QUOTtE]

Hahahahaha! there thats description i was trying to get out!

Is there a cheaper alternative to the afrs? I need to buy more go fast parts so i dont wanna budget my self out with 1700 dollars for heads
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Old 03-21-2014, 11:03 PM
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you need heads that flow 270-280 cfm on the intake side with 75-80% of that flow on the exhaust side,or a split duration camshaft. I dont care what colour heads you buy if the numbers work.
Note: Im talking well in excess of 500 hp,,,,
head choice will determine power
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Old 03-21-2014, 11:11 PM
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Profiler makes a very good as-cast head....Check them at Speier Racing Heads or directly at Profiler. Pro-Filer Performance Products Very good cylinder heads.

These were designed by Darin Morgan of Reher-Morrison Chevy fame. Morgan also previously did the AFR's designs when he worked for AFR.
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Old 03-22-2014, 12:04 PM
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so whats your opinion on those motown 220? i can pick up a set for $500 will they get me in the 500 range?
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Old 03-22-2014, 12:14 PM
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Motown 220s cast iron? a little low on flow,high 250s,,,,
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Old 03-22-2014, 12:16 PM
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I need 250cc to get me in the 500 range?
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Old 03-22-2014, 12:24 PM
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you need better heads like AFR or get lesser heads properly ported. As cast there will usually be less flow than advertised.
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Old 03-22-2014, 12:28 PM
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okay makes sense and what does fully cnc ported mean?
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Old 03-22-2014, 12:45 PM
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World Products flow chart.....
http://www.theengineshop.com/product...f_file-209.pdf

"okay makes sense and what does fully cnc ported mean?"
It means the intake and exhaust runners as well as the combustion chambers have been matched using multi-axis machinery....
http://en.wikipedia.org/wiki/Multiaxis_machining
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  #28 (permalink)  
Old 03-22-2014, 12:48 PM
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CNC is a computer controlled machine that can perfectly replicate the same pattern over and over.

someone has programmed a computer controlled machine to shape the ports in a cylinder head. all ports should be the same shape and flow,,,
like having someone port your heads with a grinder but the person is a robot. It has limits,,,,but its an excellent start with good results that are consistent.
The flow numbers should be very accurate.
a well built engine with matching parts can make more than 2 horse power per cubic inch based on a V-8 platform.
example:
400 cubes
heads flow 250 cfm and 190-200 cfm on the exhaust side,you should have no problem making 500 hp or a little more with matching parts
same engine with head flow of 300 cfm and 230-240 cfm on the exhaust side could make over 600 horse power with proper matching parts(at a higher RPM)

note my previous post about surpassing 500 hp,,,

note excellent helper post from Richard
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Old 03-22-2014, 01:02 PM
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Okay the reason I'm saying 500 hp and 6000 rpm is because thats what my connecting rods max rating is pro comp 5140

Rod Length
5.700 inch
Beam Style
I - Beam
Rod Material
Forged 5140 Steel
Rod Wrist Pin Style
Bushed fit
Rod Bolt Brand
Procomp
Rod Bolt Material
8740 Chromoly Steel
Rod Bolt Diameter
3/8 inch
Rod Bolt Head Style
12 point
Approximate Weight
569 grams
Rod Journal Diameter
2.100 inch
Pin End Bore Diameter
0.927
Advertised Horse Power Rating
500 HP
Advertised RPM Rating
6,000 RPM
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Old 03-22-2014, 01:10 PM
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If you can get a good deal on the Motown 220's they could reach your goal. Wa that $500 complete or $500 bare castings??
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