Test and tune on the Hornet

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Took the Hornet out to the swap meet/test and tune session yesterday at Firebird Raceway near Boise.   Tried a larger carb (670 avenger) this season and it was a bit faster last weekend, so I added some jet and tried it again yesterday.   Ran the best it ever has.   Went 13.49 @ 100.6, which got me my 100 MPH stickers.  Ran three runs over 100MPH, and then a 99.93 as we were losing the air a bit around 3 in the afternoon.  Barometer started dropping hard about 2.   Got a total of 5 runs in, 13.49-13.53 was pretty much the day with one 13.58 first run mostly due to it being the first morning run with a slippery launch.  

The car is really running well for the extremely mild combo.   8.3 compression stock pistons and rings, new bearings and seals, rebuilt the heads using the stock valves.   Went with the stock 30 degree intake angle, but I did do bowl work to make the valve job work.   .448/.475 lift, 204/214 @ .050.   Basically the Edelbrock Performer specs.   Springs to match.   Performer intake manifold.   Used a 600 Quick Fuel carb last year when it went 13.68 @ 98.66, running a 670 Avenger this year.   

Rear gear is a 3.54 with a powertrax locker and Moser axles.   Rear end was built for my solid lifter 401, but it's what I had.  Trans is a 904 that was rebuilt for higher HP.   It was the stock trans behind the stock 304 that was original to the car.   Converter is a "factory high stall" 22-2400 RPM stall.   Drives around like a stocker.

That's pretty much it.   DA was from 2500-3100 yesterday.   It ran best at 2900 ft. DA.   

Anyway, I got my stickers!   

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Traveller Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Feb/26/2011 Location: Idaho Status: Offline Points: 1011	Post Options Post Reply Quote Traveller Report Post Thanks(0) Quote Reply Topic: Test and tune on the Hornet Posted: Apr/05/2015 at 6:24pm
	Took the Hornet out to the swap meet/test and tune session yesterday at Firebird Raceway near Boise. Tried a larger carb (670 avenger) this season and it was a bit faster last weekend, so I added some jet and tried it again yesterday. Ran the best it ever has. Went 13.49 @ 100.6, which got me my 100 MPH stickers. Ran three runs over 100MPH, and then a 99.93 as we were losing the air a bit around 3 in the afternoon. Barometer started dropping hard about 2. Got a total of 5 runs in, 13.49-13.53 was pretty much the day with one 13.58 first run mostly due to it being the first morning run with a slippery launch. The car is really running well for the extremely mild combo. 8.3 compression stock pistons and rings, new bearings and seals, rebuilt the heads using the stock valves. Went with the stock 30 degree intake angle, but I did do bowl work to make the valve job work. .448/.475 lift, 204/214 @ .050. Basically the Edelbrock Performer specs. Springs to match. Performer intake manifold. Used a 600 Quick Fuel carb last year when it went 13.68 @ 98.66, running a 670 Avenger this year. Rear gear is a 3.54 with a powertrax locker and Moser axles. Rear end was built for my solid lifter 401, but it's what I had. Trans is a 904 that was rebuilt for higher HP. It was the stock trans behind the stock 304 that was original to the car. Converter is a "factory high stall" 22-2400 RPM stall. Drives around like a stocker. That's pretty much it. DA was from 2500-3100 yesterday. It ran best at 2900 ft. DA. Anyway, I got my stickers!

401jim Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Joined: Jan/07/2012 Location: Brunswick,Ohio Status: Offline Points: 793	Post Options Post Reply Quote 401jim Report Post Thanks(0) Quote Reply Posted: Apr/07/2015 at 3:52pm
	NICE JOB!!!!!! You are gonna get me worried real soon. I can see you sneaking up on me! Going to have to tune her up and I'll post this years E.T. as soon as I get both of those Hornets out of storage.


Traveller Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Feb/26/2011 Location: Idaho Status: Offline Points: 1011	Post Options Post Reply Quote Traveller Report Post Thanks(0) Quote Reply Posted: Apr/07/2015 at 9:40pm
	Thanks! The car is in full stealth mode at the track, which is entertaining. It's quiet, and it idles smoothly with the new carb, so it looks and sounds like a high 14's car at best. I've had the tech guys ask me if I really needed a helmet when I pulled it out for inspection. That just happened again last weekend. Fun stuff! Couple more things to do to get it ready for club racing on the 24th, but it's pretty much the way it's going to be run this season. Need tires and a better radiator. Tires will be ordered next week probably. Going to change the oil again before we start racing also.