73 340 SB Rebuild, Need Help Selecting Parts
So here is the story: Yea I know everyone has a story. I have a 1973 Dart Sport that I am building for Road Racing and SCCA Autocross. There is a new Class Called CAM (Classic American Muscle) so I didn't want another Mustang or Camero. Found the Dart in pretty bad condition and started working on it. Chassis is now in great shape and drives on rails. Here is a short video of first run with this car.
Motor seemed so so with low compression, but ran pretty good. Initial compression was not great with the average cylinder was around 125 lbs (wet) per hole, 109 lbs (dry). Had some pretty good oil leaks out rear main so its time. Oil pressure has been good but the engine did tend to run hot around 200.
Tearing down the motor now.
Here is my Goal for this build:
Looking for more of a Road Race setup. Needs to be completely street able. On the Autox course I run mostly in first gear @ 2500 to 5800 rpm peaking out around 55 to 60 mph. Motor spends most of the run around 2500 to 3500 in the turns.
Goal: Build a 375 to 400 hp small block with very wide power band from 2500 to 5500 rpm, Here is what on the car now:
Standard 904 three speed auto transmission with manual valve block and 273 gears, stock converter.
Here is what I have so far:
Heads are PN# 3671587 which should be 340 heads with 1.88 1.60 I think?
Edelbrock Intake# 318/ 360 #2176
Holly 750 dp carb, thinking of going with big 2 barrel say 500+cfm?
Cam: Unknown once block is out will post up here.
Pistons look to be Standard bore: Stamped "STD"
Looking at the Pistons, looks like there is plenty of room to improve compression. Pistons are down in the hole at lease 1/8th inch.
I am no motor builder and don't have unlimited funds to spend, but I am looking for a good quality build at or around 400 hp with a wide power band for road racing.
What parts should I be looking to put back into this motor?
So here is the story: Yea I know everyone has a story. I have a 1973 Dart Sport that I am building for Road Racing and SCCA Autocross. There is a new Class Called CAM (Classic American Muscle) so I didn't want another Mustang or Camero. Found the Dart in pretty bad condition and started working on it. Chassis is now in great shape and drives on rails. Here is a short video of first run with this car.
Motor seemed so so with low compression, but ran pretty good. Initial compression was not great with the average cylinder was around 125 lbs (wet) per hole, 109 lbs (dry). Had some pretty good oil leaks out rear main so its time. Oil pressure has been good but the engine did tend to run hot around 200.
Tearing down the motor now.
Here is my Goal for this build:
Looking for more of a Road Race setup. Needs to be completely street able. On the Autox course I run mostly in first gear @ 2500 to 5800 rpm peaking out around 55 to 60 mph. Motor spends most of the run around 2500 to 3500 in the turns.
Goal: Build a 375 to 400 hp small block with very wide power band from 2500 to 5500 rpm, Here is what on the car now:
Standard 904 three speed auto transmission with manual valve block and 273 gears, stock converter.
Here is what I have so far:
Heads are PN# 3671587 which should be 340 heads with 1.88 1.60 I think?
Edelbrock Intake# 318/ 360 #2176
Holly 750 dp carb, thinking of going with big 2 barrel say 500+cfm?
Cam: Unknown once block is out will post up here.
Pistons look to be Standard bore: Stamped "STD"
Looking at the Pistons, looks like there is plenty of room to improve compression. Pistons are down in the hole at lease 1/8th inch.
I am no motor builder and don't have unlimited funds to spend, but I am looking for a good quality build at or around 400 hp with a wide power band for road racing.
What parts should I be looking to put back into this motor?
