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  #61 (permalink)  
Old 08-27-2010, 10:04 PM
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I have this other rear end I need to get in the truck then i can get a taller tire and wider and it has 4.10 gears so that will help this truck dont hook up very good at all if i nail the throttle before i get into 3rd it spins the tires pretty bad

first pass i only had a vent on the valve cover and it fell off somewhere on the track so second pass i took the vacuum brake line off and ran a pcv valve instead of having brakes and it blew that out of the valve cover as well at about half track ?

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  #62 (permalink)  
Old 08-27-2010, 10:16 PM
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Just a PCV valve in one cover isn't enough, it has to have a breather in the other cover also, so the PCV valve pulls a crossflow through the engine.
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Old 08-27-2010, 10:26 PM
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ok that makes sense when i bought the fabricated valve covers they didnt have holes at all so i only wanted to do what was necessary

is it possible that i am building condensation or putting lots of air in the oil from lack of ventilation ??? cause if i check the dip stick it looks good up to the fill line then its milky above that but not overfull and it looks milky under the valve cover???

and ya i have horrible wheel spin if i floor it before 3rd gear it just spins next time i will borrow a friends slicks and see what happens
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Old 08-27-2010, 10:35 PM
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Yes, sounds exactly like condensation milking the oil, the classic sign is milky sludge on the inside of the valvecovers.

You will want to put the PCV valve in a baffled grommet to keep it from sucking oil.
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Old 08-28-2010, 03:45 PM
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thanks so much eric you have been a major help I will let you know how it does next week
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Old 08-28-2010, 09:51 PM
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hey eric i got one more question i have been thinking about my compression ratio and somebody on here said they think i have 11.3-1 well i would like to hear what you say cause i think its about 10.7

performer rpm cyl heads 64cc

my pistons are flat tops with about a 4cc "troff" is what my machinist called it

and this is my head gasket

Bore (in) 4.165 in.
Bore (mm) 105.791mm
Gasket Material Multi-layer steel
Compressed Thickness (in) 0.040 in.
Compressed Volume (cc) 9.200cc
Lock Wire No
Quantity Sold individually.
Notes Gasket has "Bore Bead" combustion seal. Can be used on aluminum block with liners.

can you tell me what that comes out to thanks ?????
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Old 08-28-2010, 10:25 PM
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Any idea on the brand of the pistons, it could make a .020" difference on their height?? Makes a distinct difference on compression calculations.

Was the block decked at all, or left stock?? Do you happen to have a piston to deck measurement with a piston at TDC?? This can make a big compression ratio difference too.
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Old 08-28-2010, 11:16 PM
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the pistons are speed pro wl-23532f 40

I got 7 of them from my dads stuff when he died so i bought another and had it matched
these are for a 5.565 rod but had been milled down for a 5.7 rod so prolly not a good way to tell and i didnt measure the piston to deck at tdc but i did not have any deck work done
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Old 08-28-2010, 11:22 PM
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here is a picture to put the truck with the thoughts. still got a few things to do to pretty it up like bumper and hood

this was my first pass




Last edited by abigassbowtie; 08-28-2010 at 11:33 PM.
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Old 08-29-2010, 02:21 AM
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I'm going to go off the assumption that cutting the pistons resulted in a zero deck situation on the undecked block, as I have done the same with this piston and there really isn't much more that can be cut from them, you get too close to the top ring. I came up with 11.8-1 using the rest of your specs. It is painfully easy to get compression in a 400 with zero deck, flat top piston, and 64cc head. Even if the piston were .020" down at TDC like a stock piston, it would still be 11.2-1. Plus side is you have excellent quench.

Bet it makes a ton of low and mid range torque, traction a real problem . You could really use a much bigger intake port head, 210-215cc or bigger, would make a lot more top end power.

Lower that truck!!! And get some good tires so you can see what it has
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Old 08-29-2010, 02:30 AM
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Quote:
Originally Posted by abigassbowtie
my pistons are flat tops with about a 4cc "troff" is what my machinist called it
Easy to see you weren't raised on a farm, around a hog trough...
http://www.google.com/imgres?imgurl=...26tbs%3Disch:1
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Old 08-29-2010, 06:08 AM
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thats funny because i did raise a pig in 4-h growing up i just put it in quotation cause I found it really wierd that he would call it that and spelt it wrong cause i didnt know if anyone would know what "trough" was

I wanna save up and back half the truck this winter and buy a set of afr 220s
do you think that would be an excellent choice for a cylinder head
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  #73 (permalink)  
Old 08-29-2010, 08:33 AM
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The 106-plus mph isn't too bad- but the ET shows that you're (most likely) spinning too much. That mph should have you in the 12.7 range. If your short time is over 1.7-1.8 or so- you are spinning too much.

Something else that almost all guys do at first, is overrev before upshifting. Just something to watch out for.

4-H rocked! Learned to chew there.
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Old 08-29-2010, 04:22 PM
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The AFR 220 is a real nice head, would be right up your alley. I would look at the Profiler Air Wolf too, as sold by Speier Racing Heads. Similar head size, better casting and port work. Some info at www.1320techtalk.com

Cobalt is right, most guys over-rev their stuff in the heat of the moment, and this is especially not needed with the 400. I've rum my Dart headed solid cam 406 shifting at 5000 and only lost a tenth compared to shifting at 6500+, torque baby . I was trying to slow it down, was running high 11's and was going to get bounced for not having a roll bar at 11.99 ET. Took shifting at 4700 to get it to drop from 11.75 to 12.0x
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  #75 (permalink)  
Old 08-29-2010, 06:25 PM
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guys I just left it in D haha i was super nervous so i didnt want to over rev an old timer told me if i was nervous just leave it in drive so thats what i did and im running a turbo 400 with out the electronic kick down so its shifting REALLY fast to 3rd I havent taken it over 5000 yet so i know it has alot more to come just wanted to make sure i was comfortable and the truck was gonna hold together

and as for 4-h I still chew haha

Last edited by abigassbowtie; 08-29-2010 at 06:38 PM.
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