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12-10-2005, 01:29 PM   #1 (permalink)
crazhrse1
 
Join Date: Dec 2005
Posts: 19
408 questions


this is also posted in the stroker forum but not many reply's just wanted to put here and see what happened



408 stroker
1979 production block
super victor intake w/850 quick fuel
trick flow pistons-tfs-51404331
comp. solid roller-672/649 260/268@.050 113 l/s
eagle crank and rods
trick flow 1.6 roller rockers
afr 205 race heads #1450 w/58cc chambers
cat rocker stud girdles
motorsport billet timing chain
fluid dampner balancer
uses autolite ar3910 plugs

11:1 compression ratio

i was wondering how this setup is and about how much hp it's making it will be goin in a 3200lb lx with a powerglide also gonna be running nitrous but not sure how much yet cause i'm not sure what the stock block will hold

thanx alot peewee


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12-11-2005, 05:10 AM   #2 (permalink)
tonys10sec306
 
Join Date: Nov 2002
Location: maryland
Posts: 3,457
408 questions

550-600hp
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12-11-2005, 05:58 AM   #3 (permalink)
n2omike
 
Join Date: Apr 2001
Posts: 5,138
408 questions

I'd drop the cam duration by 10 degrees. If you didn't plan on nitrous, I'd use a 106-108 lobe seperation. If you plan on doing all your racing on the bottle, 113 will be ok, though. I like 110 as a good compromise, but my car spends more time off the bottle than on. I'd go down to around 250/258, either way.

Good Luck!

_________________
66 mustang
302 4-speed 289 heads, 10.63 @ 129.3
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220



<font size=-1>[ This Message was edited by: n2omike on 12/11/05 8:59pm ]</font>
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12-13-2005, 02:24 PM   #4 (permalink)
crazhrse1
 
Join Date: Dec 2005
Posts: 19
408 questions

n2omike i plan on runnin nos,actually as much as possible,how much do you think the stock block would be good for
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12-13-2005, 02:55 PM   #5 (permalink)
n2omike
 
Join Date: Apr 2001
Posts: 5,138
408 questions

It all depend upon if you are able to keep it out of detonation. That involves good fuel and pulling PLENTY of timing out. A stock block will take a lot.... as long as you don't push the tune too far and run it into detonation.

Way back when, I helped a friend of mine built a 426ci 351W stroker. It was build using a 1978 block, turned down 400M crank, Chrysler rods, and dished Probe pistons. (stuff used before inexpensive Chinese parts hit the market) It was outfitted with a set of the original High Port TFS heads that were majorly ported, along with a hogged out Victor Jr. It was outfitted with a 2-stage Top Gun nitrous system and installed in a 3000lb w/driver 1989 mustang running. It ran MT 28x10.5 slicks. This car was pushed to a 5.92 @ 121mph in the 1/8. The engine lasted through two years of this before it was sold to a friend who installed a different set of heads and ran it naturally aspirated for quite some time.

What made it live was that fact that it was kept out of detonation. Detonation is what kills marginal parts. If left unchecked, it will kill good parts too. The compression ratio of this engine was only around 11:1. PLENTY of timing was pulled out for the nitrous, and good fuel was always used. Plus, the engine didn't even need to be revved hard. It was usually shifted at 6k-6.2k rpm. The rear was an 8.8 fitted with 3.73 gears. Without the nitrous, it would run just fine on pump gas, never heated up, and was exremely streetable.

Here's a picture of it at the track.



He later went to a Motorsport block, high compression, bigger heads, tubbed it out, etc. The car then went low 5's. Somebody else gave him some bad tuning advice, and it turned into a hunk of junk parts.

Avoiding detonation is KEY. Do this, keep the rpm within reason, use a reasonable 200-250hp shot of juice, and it should last a long time.
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