360 heads on a 318 of any benefit?
Everything you said there is true, but you left out the latest Viper V-10's and you also left out the fact that Neons had more power than some of the VTEC Civics and the Neon ran a straight up DOHC head and there is also the little known fact that Chrysler has probably built more turbo cars than anyone!
Check out this article:
http://www.geocities.com/alwest_83/318.html
Mid 1980's non roller cam 318, rebuilt with stock crank and rods. Arp rod bolts added when the rods were reconditioned. Crank turned .010"/.010". Flat top cast pistons were used. After the block and heads were milled to true up, a 9.2 to 1 compression was achieved. The heads are the #302 swirl port casting from a 1987 318. The heads have the larger 1.88"/1.60" valves installed, competition valve job and were treated to a full port job. Intake is the Edelbrock Performer. Carb is the Holley #3310 750cfm vacume secondary. Headers are basic fit all 1 5/8" primary tube. Cam is the Mopar Performance P4452761 with .450"/.455"lift , 268/272 duration. timing was set at 35 degrees total for the dyno test.
330 horse power @5750rpm.
How does that sound? The exact motor was also dyno run with 360 heads installed and it produced 290 h.p. @5750 rpm. That shows how port velocity is so important. But...290 h.p. is no slouch for a 318. Most of the same information presented here can be applied to the 273.
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click to go to Mancini Racing
Everything you said there is true, but you left out the latest Viper V-10's and you also left out the fact that Neons had more power than some of the VTEC Civics and the Neon ran a straight up DOHC head and there is also the little known fact that Chrysler has probably built more turbo cars than anyone!
Check out this article:
http://www.geocities.com/alwest_83/318.htmlMid 1980's non roller cam 318, rebuilt with stock crank and rods. Arp rod bolts added when the rods were reconditioned. Crank turned .010"/.010". Flat top cast pistons were used. After the block and heads were milled to true up, a 9.2 to 1 compression was achieved. The heads are the #302 swirl port casting from a 1987 318. The heads have the larger 1.88"/1.60" valves installed, competition valve job and were treated to a full port job. Intake is the Edelbrock Performer. Carb is the Holley #3310 750cfm vacume secondary. Headers are basic fit all 1 5/8" primary tube. Cam is the Mopar Performance P4452761 with .450"/.455"lift , 268/272 duration. timing was set at 35 degrees total for the dyno test.
330 horse power @5750rpm.
How does that sound? The exact motor was also dyno run with 360 heads installed and it produced 290 h.p. @5750 rpm. That shows how port velocity is so important. But...290 h.p. is no slouch for a 318. Most of the same information presented here can be applied to the 273.
back to home page
click to go to Mancini Racing