Beasley's 76

I'm looking for input on gaining some HP and improving my time at the strip while maintaining streetable weekend riding.
The best time for me so far is 9.26 in 1/8- 14.25 in 1/4.

I have a 76 with a GM 350HO Crate Motor purchased new around 2001. All accessories listed were purchased new and installed 2001 with motor
Only original Engine part is the Distributor- I have New HEI to install
It has the Vortec Heads (first Generation) 1.94"/1/50" 64CC
Hydraulic Flat Tappet Cam-lift .435/.460exh Duration 212"in 222"ex
Edlebrock Aluminum Performer intake
Holley 650 cfm with vacuum secondaries-
Headers- Flow Masters
T-56 6 Speed Transmission
4.11 Rear Gears- I went through the entire suspension system, i dont have HD half shafts and other than 4.11 gears No other suspension or drive train mods.

I've never dyno the engine so i dont know current HP, i'm guessing between 330-350HP? I'd like to get to 400HP or get into the high 8's and I don't want to add a NOS kit. I have 255/60/15 cheap tires and i dont plan on going to slicks, possibly drag radials but I dont want to risk hooking hard and breaking something in the rear.

My question is where i can put my money to get the most bang,
1. would it be worth replacing the Vortec heads with newer Vortec heads (with better flow and peformance according to my research).
2. Go with the GM Hot Cam-
3. Go with GM Hot Cam and new heads
4. upgrade to 750 Double pumper
5. what other options should i consider?

Thanks for taking the time to offer advice!

drwet

Unfortunately what you need is more, bigger, and better of what you already have. It sounds like you have a nice well matched combination. If you want more power, you need better heads, bigger cam, more compression, more displacement, etc. Its a slippery slope, isn't it?

With that said, it seems to me your combination should do better than low 14's. I'm pretty sure you can do better if you optimize your current setup. Do you have your timing and jetting dialed in?

bluedawg

Afr 180cc heads, roller camshaft with an rpm range to match head's, compression and intake.

Beasley's 76

I haven't dialed in timing, I will be installing new HEI distr. and setting timing before next trip to strip. No jetting on carb. I let off before the 1/4mile trap. We are typically racing the 1/8, but our slip gives 1/8 and 1/4 times

Bagmup

Cheapest would be to get you distributor recurved to suit the engines torque and power curve.

qwank

better driver

68post

The Hot cam and the 750 carb is what I'd use.
I had a similar cam with a smaller carb in a truck and it had great torque with good mileage. I'm sure you have the same now, but with 4.11 gears and a six speed manual it's all at too low of an rpm to be a benefit.
You're setup perfect for a one ton truck pulling heavy loads !

If you're pulling the heads in this swap then have them clean-up on the intake and fully ported on the exhaust so you can run a larger single pattern cam.

I did a search to try and find what your crate 350 compression was delivered with and found this as the first link.

http://www.carcraft.com/projectbuild...l/viewall.html

BKbroiler

So you're running on a 1/8 mile track and your time slip gives you 1/8 data plus a conversion to 1/4 mile times? If so, I think their conversion factor is a little optimistic. The rule of thum is 1/8 ET X 1.58 = 1/4 ET. My time slips work out that way almost exactly. So that would put you at 14.6 in the quarter.
What are your sixty foot times and 1/8 mile speed? If you're up around 2.2 or 2.3 for 60 ft, you can make huge ET gains there. Change all 6 u joints to Spicer solid units, put some drag radials on it and you could go 1.8 for 60 ft. Your 1/4 mile potential ET drops almost twice as much as your 60 ft time reduction.
Also, your cam is very mild but you would need to cut the valve guide bosses to accomodate much more lift, but it's worth it. Put a bigger carb on it and get down to low 8s in the eighth mile.

Beasley's 76

The 6 speed is setup with double overdrive, it has the same ratio as the original 4 speed for 1st-4th with .75 5th and .50 6th. It was installed for drivabililty, I can cruise at 90mph at 1800 RPM on the interstate. No more vinivans passing me, I'm getting around 14-17MPG depending on how drive.

Beasley's 76

THey are timing both the 1/8 and the 1/4, We are all racing the 1/8. I usually let up before the 1/4. Thanks for the feedback
I'm not posting my reaction time, it sucks.

1/8
60' 2.236
330 6.123
78.
72 MPH
1/4 time
14.25
96 MPH