Nervous as all hell

[SFRT]

today is the day....had the local 'expert tuner guy' give the Scow a once over yesterday and we meet up at the 'serious' Chassis Dyno joint in about 2 hours to see just how sad, weak and pathetic my car is.

Will I score? will I get to second base? Or will I just be standing at the side of the gym with my hair all greased up and no date for the prom?

[Chris G.]

Just so we know where your emotional scale is, what are your expectations?

[SFRT]

none really...car runs great etc, but..it seems ....not so fast...super torgey...but not so fast, then again, I am used to motorcycles so maybe my brain is out of whack.so I am betting I will end up with something like 400 rwhp which means I will need to get a more radical top end in the near future. which is fine....I just don't want be embarrassed these dyno guys do all the really fast cars around here. if I end up with say 425 plus at the wheels I will be 'happy'. anything higher I will be really happy.

the 'expert' guy says though that with my bottom end build, he can re-cam and recarb the scow and get 600 plus fairly easy...so I guess maybe I will end up doing that.

[Dans 68]

Well, I didn't hear any explosions from your way, so it went well? Looking forward to the dyno numbers. 

Dan

[69*F5*SE]

 

[Finn]

 

[tan top]

 

[69bronzeT5]

 

[SFRT]

OK..best of 3 pulls:

[SFRT]

[SFRT]

[Ghoste]

Not bad at all.  

So how do you feel about it?  What were the comments?  You have to tell us the rest of the story.

[SFRT]

so basically..if one allows a 20% power loss for the drivetrain I got around

485 HP at flywheel
405 at Rear wheel.

there is definately room for improvement.

[69bronzeT5]

there is definately room for improvement.

Still though, not bad!

[SFRT]

they tell me that with the too small cam vs my compression ratio this is definately a good result and that the car is running 'strong'. we settepped down 2 jet sizes, theres no detonation problem etc. they tell me my torque numbers are good and that I peak out at 5750 RPN, also good for a street car

suggestions are:

more radical cam .port the heads and improved carburation will give me another 60-70 'true' HP on 91 octane street gas, andthat thats about all I am going to get out of my motor.

[SFRT]

oh yeah i have a 440 with aluminum edelbrock heads.

[SFRT]

I figure I did get some titty and maybe a finger wet, but didnt make it to home base.

[tan top]

 still good for at the wheels  ,  

[hemi-hampton]

What the lift & duration on the Cam you got now? Whats the Compression now? What size carb do you have? Whats the rear gear size & Torque Converter size? Curious or is it confidential?  LEON.

[Brock Samson]

 What gear set you runnin Frank?.. 

[SFRT]

What the lift & duration on the Cam you got now? Whats the Compression now? What size carb do you have? Whats the rear gear size & Torque Converter size? Curious or is it confidential?  LEON.

cam...230-something .525 lift

compression 10.9-1 with KB forged pistons

carb proform '850' ( its actually a holley 750 body)

gears are 3.54's    

its a 18 spline 4 speed transmission.



I think I am going to go with a custom grind much more radical solid cam and some form of multiple carburation and have the 'expert' dude port the heads.

[SFRT]

I might be confused on the gears they are whatever came in the original A33 'Track Pack'.......the Dana was unmolested when I got the car.....

[SFRT]

also..the dude that owns the joint said tha his dyno was 'very stingy' and that an honest 400 hp plus reading was 'damn good'. claims that his dyno often returns readings 60-70 HP lower than other tuner shops dynos. Over-all I am happy, the car is running really really well and has given my zero problems in its first 1000 miles since the rebuild. I do mean ZERO problems.

[Ghoste]

Not confused, 3:54 is correct.

[teamroth]

any video?

[SFRT]

nope. just some cell phone pix.

[SFRT]

lets see what else>>>the car ran 'clean' no burps farts or detonations. everyone there said it was 'a good decent' performance.

but I, of course, want MORE.

[Brock Samson]

ok, what's the story on the white '68?.. 

[SFRT]

its a beat to hell 68, all the panels and doors are badly dented,interiors shot, no engine. engine bay and K member are nice and shiny tho I guess someones fixing it up. it has the 2 small stripes on the back so its an r/t I think.

[Finn]

How the heck could you tell thats a 68 from that picture??
I feel like such a noob now lol

[Ghoste]

The pointy dash pad and door lock buttons near the back of the door.

[Finn]

Ohhhhhh learn something new everypost 

[hemi-hampton]

Have ever ran the 1/4 mile with it? Wonder what it would do? LEON.

[SFRT]

no I have not. after i get a couple thousand more miles on it and feel I have the shifting dialed in I will probably take it out and give it a shot.

[firefighter3931]

so basically..if one allows a 20% power loss for the drivetrain I got around

485 HP at flywheel
405 at Rear wheel.

there is definately room for improvement.

With a stick the parasitic loss is closer to 15% so based on those RWL numbers you're making around 470hp at the crank.....about where it should be given that engine combination. 


The cam is holding it back, no doubt about it. The shop did a nice job dialing in the A/F ratio and #'s in the 12 af's always produce excellent peak power....lean is mean. 


To make more power you will need more cam with longer duration and increased lift. The heads could also use some portwork....there's usually at least 10cfm in the valvejob alone. The RPM dualplane makes awesome torque but it does choke off some top end power. I found this out firsthand when we dyno tested my 446....the RPM gave up 30 HP to the Street Dominator on back to back tests. Your carb is plenty.....mine is very similar and it made 540hp so there's no need to upgrade. 


Overall, that is a nice running engine given the sum of it's parts....nothing to be ashamed of ! 




Ron

[SFRT]

cool. I am definately going to get a bett :coolgleamA:er cam for it and all of that.

[Just 6T9 CHGR]

Damn those are real impressive #'s to the wheels.....mine only made 270hp
Which I guess inst too bad for an auto with a relatively stock build & stock manifolds....

[Silver R/T]

good numbers for a car that you can drive daily on pump gas