It is currently Tue Oct 17, 2017 2:07 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: Fastest Small Block 444 ci buildup redux
PostPosted: Thu May 28, 2009 9:56 am 
Offline
Site Admin

Joined: Wed Jul 23, 2008 9:40 am
Posts: 702
Location: Ansonia, CT
Unfortunately we lost the nice little tech writeup I did on my 444 build. I'm gonna try to duplicate it so we can archive it.

I started with a 1968 340 block. It was 1/2 filled with hardblock, square decked, torque plate bored and honed. The main caps were replaced with Pro-gram steel caps with ARP studs. The block was then line bored and honed. The pass side oil galley was "tubed" to block oil to the tappets and the drivers side feed blocked entirely. Don't need the oil with solid rollers.

Image

A custom 4.25" stroke Callies magnum crank was ordered up with 2" diameter rod journals. I also got a set of 6" chevy rods from Callies Compstar line. The pistons are Diamond forgings with a teflon coating on the skirts and a thermal barrier coat on top.

Small block mopars have lots of room to accept extra stroke and 4.25 didn't require much especially with the smaller big end of the chevy rods. This is all I needed to do to get everything to clear. 2 notches per cylinder.

Image

The counterweights were smaller on this crank which necessitated quite a bit of mallory to get it to internally balance. You can see all the slugs in the crank in this pic.

Image

Rods and pistons....

Image


Top
 Profile Send private message  
 
 Post subject: Re: Fastest Small Block 444 ci buildup redux
PostPosted: Thu May 28, 2009 4:23 pm 
Offline
Site Admin

Joined: Wed Jul 23, 2008 9:40 am
Posts: 702
Location: Ansonia, CT
Here is the rotating assembly installed. You can see the Ishihara Johnson double crank scraper on each side. Needed a bit of fitting due to the custom stroke. It takes the place of the stock cork strips and installs with RTV. The oil pump is a stock volume pump, no need for HV especially with restricted oiling.

Image

You can see the beads of RTV because I am about to bolt on the pan. Its a milodon stock volume pan with baffles.


Top
 Profile Send private message  
 
 Post subject: Re: Fastest Small Block 444 ci buildup redux
PostPosted: Tue Jun 02, 2009 7:23 am 
Offline

Joined: Fri Nov 07, 2008 9:46 pm
Posts: 69
Location: Danbury CT
Show us more !!!!

_________________
73 Duster 340


Top
 Profile Send private message  
 
 Post subject: Re: Fastest Small Block 444 ci buildup redux
PostPosted: Wed Jun 03, 2009 8:53 am 
Offline
Site Admin

Joined: Wed Jul 23, 2008 9:40 am
Posts: 702
Location: Ansonia, CT
OK!

Heads are 915 J heads that were worked by Dwayne porter. They were fully ported and Ferrea 2.055 / 1.625 valves installed with comp springs and retainers. They flow about 271 on the intake and 180 on the exhaust. They still have the stock pushrod location unlike the T/A heads. The TA heads are the same casting as my car uses but the pushrod hole was drilled in a different location to allow for more porting in the Trans Am series. I could have used those heads on my car if I wanted to buy them and cut them up, but I did not.

Image

The springs are larger diameter than stock and there was concern for rocker arm clearance. Norris makes a nice investment cast piece that clears just fine. They are nice rockers but pricey too. They ride on chromed shafts and 4 of the 5 rocker shaft studs have been drilled and tapped for larger 3/8 studs. The one stud that feeds the oil still remains at 5/16.

Image


Top
 Profile Send private message  
 
 Post subject: Re: Fastest Small Block 444 ci buildup redux
PostPosted: Wed Jun 03, 2009 9:09 am 
Offline
Site Admin

Joined: Wed Jul 23, 2008 9:40 am
Posts: 702
Location: Ansonia, CT
The cam is a custom Comp solid roller grind. Dwayne picked the best profile that would fit in an off the shelf cam blank. His ideal grind required a custom blank which doubled the cost. In the name of getting the car out to baseline it we went with the cheaper cam which is still in the car. It seems to work pretty damn well. Makes me wonder what the "ideal" cam would do.

Its installed with a comp timing set and mopar tensioner. No need for a fuel pump eccentric with an electric pump.

Image

The comp solid rollers are not the easiest install. Due to the oddball tappet angles the link bars cannot face in, they must face the cylinder bank, however there is no clearance which requires lots of grinding. There is tons of meat in this area but it took quite a bit of time with the carbide burr.

Image

Interestingly the pump gas 408 that Tom Cannon bought from me was based on a 360 block which only needed a little bit here and there.

Timing cover is on, flow cooler water pump too.

Image

The SFI balance was marked incorrectly. New mark verified with a piston stop.

Image


Top
 Profile Send private message  
 
 Post subject: Re: Fastest Small Block 444 ci buildup redux
PostPosted: Thu Jun 04, 2009 9:50 pm 
Offline

Joined: Fri Nov 07, 2008 9:46 pm
Posts: 69
Location: Danbury CT
What brand was the balancer ? Did you run a fake mechanical pump ?

_________________
73 Duster 340


Top
 Profile Send private message  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 11 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group