Project "Payback" - Lateral-g Forums

BBC69Camaro · #1 03-26-2010, 11:06 AM

Sounds like fun! Glad things are coming together for ya Todd

Vegas69 · #2 03-26-2010, 02:47 PM

The highs and lows of building hot rods. I had a severe hesitation say 1/8to 1/2 throttle. I changed squirters, power valve, adjusted floats and finally bumped the primary jets up 4 and it ran great. So I bring it home and the idle starts getting erratic. Put the vaccum gauge on it to adjust the idle mixture screws to no avail. Thought mayble the new power vavle was opening at idle. I finally figure out that the primary venturis are dripping fuel usually meaning the floats are to high but I set them dead nuts. I pulled the site hole plug and theh primary was to high. Strange, so I reset it and it's doing it again. I watch the fuel in the bowl running and it's to low now. I finally figure out the needle is not moving freely in it's bore. (Possibly debris)So I finally get it running great and the needle craps out. To say I was pissed was a major understatement

Anyway, I grabbed a new needle/seat, float, and gaskets just to be safe and bumped the jet up .001. I'd give it a 9.5/10 now. This car has never run this good. Changes I made to make it happen:

PV: 4.5 to 7.5 to 4.5 to 7.5 (Higher vaccum on this engine)
Primary Jets: 71 to 77 to 78
Front squirter: 32 to 37 to 40 back to 37
Rear Squirter: 37 to 40
Replaced needle/seat/float/gaskets

So another hands on Holley tuning experience. My garage smells like a gas tanker and one of my neighbors came over to complain about the noise.

I've been working on this thing so long and much she thought I was running a shop!

**tones2SS** · #3 03-26-2010, 04:06 PM

Awesome job Todd.
(You should build some cars out of your garage. You'd make some killer money. You know what you're doing, or at least, pretend you do!!)

Vegas69 · #4 03-26-2010, 04:11 PM

I'd go broke working on these things. It takes 5 times longer than anyone thinks to do anything. Plus I'm an anal bastard. Eventually I may start taking on a project or two per year but I'll have to move first and the client would need to be very patient and loaded.

I'm in no hurry to sell this one and start over. In fact, I doubt that ever happens. I work on it for fun but mostly neccessity. I'm sure it doesn't look that way but I'd rather be racing or cruising anyday. It just never ends with these which I'm OK with most of the time. LOL

g356gear · #5 03-26-2010, 04:26 PM

Hey Todd, in my experience, usually when you make hp jumps like this, you find the weak links in the powertrain pretty quick. Are you worried about the TKO 600 tranny handling past 500-600 ft.lbs?

Vegas69 · #6 03-26-2010, 04:34 PM

Quote:

Originally Posted by g356gear

Hey Todd, in my experience, usually when you make hp jumps like this, you find the weak links in the powertrain pretty quick. Are you worried about the TKO 600 tranny handling past 500-600 ft.lbs?

Nope, if it breaks I'll replace it.

That t56 magnum looks interesting.

I'm only exceeding the rating by 41 ftlbs. The block was only tested to 650hp in GM endurance testing and I'm 16.7 hp over that as well. Rules were made to broken. haha

**DFRESH** · #7 03-26-2010, 05:35 PM

Quote:

Originally Posted by Vegas69

Nope, if it breaks I'll replace it.

That t56 magnum looks interesting.

I'm only exceeding the rating by 41 ftlbs. The block was only tested to 650hp in GM endurance testing and I'm 16.7 hp over that as well. Rules were made to broken. haha

Love that kind of talk.

mfain · #8 03-27-2010, 09:52 AM

I bought a TKO 600 Extreme from American Powertrain -- cryo-hardened gear sets and shafts. It is "rated" to 1000 hp. I haven't had a chance to abuse it yet, but when I do I will let you know how it does. Right now I'm on my way out to the Bull Ring to see how Todd does at the autocross.

Pappy