It is currently Tue Oct 17, 2017 8:29 pm

All times are UTC - 4 hours




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: Modern Stuff
PostPosted: Sat Mar 20, 2010 4:59 pm 
Offline
Site Admin

Joined: Wed Jul 23, 2008 9:40 am
Posts: 702
Location: Ansonia, CT
Instead of waiting till after Easter to pull the motor out of my Cobra and going thru it I ended up buying a built shortblock off of craigslist. It too is an original Cobra block but this guy upgraded the powdered metal rods with Manley H beams and put low compression diamond pistons in place of the stock hyper pistons. Since I don't want low compression for my centrifugal supercharger (they are better for roots/screwchargers) I already planned to swap out the slugs for flat tops. It came with ARP head and main studs which sweetened the deal too.

So with help I stripped it down in preparation for the trip to the machine shop.

The stock 96-98 Cobra engine is 32 valve with 281ci. Pistons are a briggs and stratton size, just 3.552" in diameter. Stroke is small too. However.... The OE block is aluminum. Cast by Teksid of Italy who does all the Ferrari blocks. It's fully skirted with 6 bolts on the main caps. 4 vertical and 2 cross bolts. Although debatable some people claim the stock block is good for 1500hp. Ford didn't skimp on the crank either. They put a nice forging in the car from the factory with 2 more flywheel bolts than more pedestrian 4.6 motors. Although debatable like the block, some say the OE forging will take 1200hp.

Even if we cut those numbers in half thats still more than I would dream a stock mopar small block taking. Granted both are in a completely different league. Tenchnology is wonderful but doesn't usually go hand in hand with simplicity. I'm intimidated a bit.


Attachments:
DSCN0047 (Large).JPG
DSCN0047 (Large).JPG [ 121.42 KiB | Viewed 1097 times ]
DSCN0046 (Large).JPG
DSCN0046 (Large).JPG [ 115.6 KiB | Viewed 1103 times ]
Top
 Profile Send private message  
 
 Post subject: Re: Modern Stuff
PostPosted: Sun Mar 21, 2010 12:04 am 
Online

Joined: Fri Jul 25, 2008 12:26 am
Posts: 6801
Location: Bristol CT
:winner :pop

_________________
SUPERCAR LEGAL

66 Belvedere I HP2 Hemi Auto 11.13 @ 124MPH 1.68 60' S/A

70 RoadRunner 440+6 Auto 11.21 @ 124MPH 1.72 60' S/A

70 RoadRunner Hemi Auto 12.39 @ 113MPH 1.90 60' S/A

71 GTX 440+6 Auto 11.35 @ 123MPH 1.79 60' S/A

71 RoadRunner 440+6 4Spd 13.61 @ 101MPH 1.99 60' P/S

72 Demon GSS 340 S/A 11.81 @ 118MPH 1.91 60' S/A


Top
 Profile Send private message  
 
 Post subject: Re: Modern Stuff
PostPosted: Sun Mar 21, 2010 3:48 pm 
Offline

Joined: Sat Dec 06, 2008 12:59 am
Posts: 620
Location: Watertown,Ct.
chris, is the cobra going to be as "on the edge" as the duster was?

_________________
71 Chevelle SS
454 (LS-5) 4spd


Top
 Profile Send private message  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 3 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:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group