Need More Mph ?????

[donZ]

11.80 @ 109 MPH 1.47 60 ft
Something is wrong,
te-61 msd 50, 28 tall tire, c-16 gas, no knock. 25 psi boost
3200 stall ,locking conv, @ 80 mph
any thoughts ??

 

[KevinB]

11.80 @ 109 MPH 1.47 60 ft
Something is wrong,
te-61 msd 50, 28 tall tire, c-16 gas, no knock. 25 psi boost
3200 stall ,locking conv, @ 80 mph
any thoughts ??

Thats a nice 60' :biggrin:

Maybe your trans is slipping? What is your rpms at the traps. My car traps 119 and I am at 5800 rpm's with a nonlockup using 28" tires. Also, what is your 1/8th mile ET and mph?

 

[donZ]

What is your rpms at the traps not sure
1/8th mile ET
7.4 at 89 mph
11.8 at 109 in the 1/4
only picking up 20 mph

 

[Dusty Bradford]

Valvesprings???

 

[TT/Ameasap]

Poss. lean condition. What are the 02's at top of 3rd?

 

[donZ]

had new valve springs,
02s around 750 t0 780
egt was 1720
i had fp up to 55 psi line off, i know high
trying to bring down the egt ????????????

 

[jerrad]

I'm having the same problem as you. I'm running a 12.3 @ 107 and picking up 20mph after the 1/8.

 

[TT/Ameasap]

1720 is wayyyyy lean. Shoot for 1550-1600....Some push to 1650.

 

[brian]

Don,
I see you are locking the converter at 80 mph.
Maybe that bogged the motor slightly and it had to recover. I used to loose as much as 4 mph after locking my converter to early. I used to lock it at 90ish, with aluminum heads and cam. With your bad azz 60ft, and possibly an early lock up, I can see a slight mph loss. We locked another ride up a hair early (87mph) at the Norwalk track rental, and lost 2 tenths as well. I believe locking the converter and putting more load on the motor will raise egt`s as well. Brian Hofer (saw you at Jim Piper`s when I dropped off his trans)

 

[TurboJim]

1720 is wayyyyy lean. Shoot for 1550-1600....Some push to 1650.

Or rich and burning fuel in the headers... tough call, but its not making power for sure.

 

[donZ]

brain
it could be locking around 85, its in the chip
i added more fuel, threw the chip, with the ac trick ??
but have not run it yet,
any other thoughts, on what to try,
thanks