RE: Race Engine Build time.
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RE: Race Engine Build time.



Hi Don,

 

Been down a similar road and here are a few things to ponder:

 

  • Race gas is quite inconsistent from one brand to another.  If you want consistency, stick with one source.  If you run Sunoco 110 on Wednesday and Torco 110 on Saturday, you will see different results
  • You might find 11:1 is overkill.  I run 100 LL from the local airport.  It’s actually about 103 octane, very consistent, and much, much cheaper.  If you can get access to a portable knock sensor you can setup your timing to be efficient and safe.  Our Mopar motors (like most motors) are what’s known as knock-limited.  This means your timing can only be advanced to a few degrees before knock and not to MBT timing
  • I also went with the CH-28 dual quad with Eddys as I wanted the nostalgia look, and it certainly yields the oohs and ahhs, but in retrospect I regret it from a competition standpoint.  Dialing in the carbs for weather and track conditions is an order of magnitude times easier with a purpose-built, single four barrel from someone like AED

 

Have fun!

 

Jim

 

From: 1962to1965mopars@xxxxxxxxxxxxxxxx <1962to1965mopars@xxxxxxxxxxxxxxxx> On Behalf Of dongallimore
Sent: Wednesday, February 16, 2022 22:40
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Subject: Re: Race Engine Build time.

 

I've finally decided I'm using race fuel. Extra $300 a year. Not confident that pump gas can be  consistent run to run and week to week. 

 

 

Akron Don

 

 

 

 

 

Sent from my Verizon, Samsung Galaxy smartphone

 

 

-------- Original message --------

From: 'David Hurd' via The 1962 to 1965 Mopar Mail List Clubhouse <1962to1965mopars@xxxxxxxxxxxxxxxx>

Date: 2/16/22 9:04 PM (GMT-05:00)

Subject: Re: Race Engine Build time.

 

You basically have what I am running.  Similar internals.  425 cu in.  Same carbs ons a crossram.  I stayed with 10 to 1 compression ratio to tolerate using pump gas.  It still diesels so I shut it off with the 727 in gear.  Bent a custom push rod once.  I add a few gallons of VP 109 octane.  It seems to like that.

 

Enjoy, but it aint cheap.

 

DCH

 

-----Original Message-----


From: dongallimore <dongallimore@xxxxxxx>
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Sent: Wed, Feb 16, 2022 5:45 pm
Subject: Race Engine Build time.

I've embarked on building a 600 HP+ ENGINE for my Belvedere. I'm not out to set low ET, just want a reliable unit capable of going into the 10's in a sub-3500# '65 Belvedere. 600 - 625 HP to allow me to dip into 10's. Been mid-30's with 525 HP +/_ and a bit more weight. 

 

So far, we've ordered the Trick Flow 240 heads (non-Max Wedge ports), have an in-Line Edelbrock CH-28 Dual Quad intake with 600 cfm carbs complete with linkage and fuel lines, 440 block. Ordered a high dollar Milodon pan, windage tray and external oil system. Suspension is in - all Calvert. Pulling back seat in A-990 fashion. 

 

Next step is 4.25 stroker with likely 11 - 1 compression - time will tell - race gas motor. Billet main caps. Solid Roller, about .700 lift,  with Harland Sharp rockers and stafts. 

 

Anyone with spare parts in thie unpurchased area, I'm interested. 

 

 

Akron Don

 

 

 

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