tonight went to the track and got a 13.695 @ 100.54 mph down from a 14.3 @ 99mph

I got a 1.949 60 foot with nitto drags

Im happy with the results. But she deff has just alittle more in her though, so time for alittle more tuning.

 

lol, tpi may get you laid..... but it also gets you 100mph trap speeds.

 

hahaha true

 

Good job on improving. What are your mods?

 

 

Engine
-350 bored .30 over to a 355
-K&B Claimer Domed(popup)hypereutectic pistons
-Comp Cams Roller Cam - 224I,230E @.50/
.513"I,.520"E
-Comp Cams roller tipped rockers (1.52:1)
-Comp Cams 1.437 dia duel valve springs
-Comp Cams locks, retainers and 11/32 teflon seals
-Heads resurfaced and machined to accept cam hardware
-Ported stock cast iron heads
-Heavy duty push rods

Intake and fuel
-Ported stock TPI upper and lower intake
-K&N filters
-BBK adjustable fuel pressure regulator (35-70 PSI)

Exhaust
-Heddman 1 5/8" shorty headers
-Heddman 2 1/2 inch Y pipe
-3 inch custom catback with a flowmaster muffler

Ignition and computer
-Taylor 8mm wires
-Accel 300+ digital ignition
-Accel performance cap and rotor
-MSD Blaster coil
-Mallory coil wire
-160* thermostat
-Custom engine matched prom from pcmforless.com

Transmission and Rearend
-Corvette Servo
-3.73 gears
- Aluminum driveshaft

Suspension and Tires
245/R50 16 Nitto drag radials



i have a crappy catback(flowmaster muffler and crush bent as it goes over the axel) with a cat too, im getting that redone and with alittle more tuning i hope i can grab a lower et.

 

Damn id think youd be in the 12's

 

yea, i thought i would be in the lowish 13s, and that setup sounds better than mine. now im scared for myself.

 

Easy low 13's. Cause im running 13.5 with stock internals. Stock heads,cam ect......

 

What was the ambient temp? Heat kills power, but I don't think it's probably that hot anywhere yet (?).

If it wasn't hot out, something's not quite right then. With my old '89 L98/700R4, I ran 98 mph in the 1/4 which is only 2.5mph slower. It had the simple free mods (no cat, smog, or airboxes), a Hooker Aerochamber catback, TB airfoil, K&N's, a shift kit, and that's about it. Stock longblock.

Other than mechanical's possibly not working right, I would suggest getting tuning equipment and learning how to tune on your own (fun and satisfying) or getting it dyno tuned by a reputable shop (easy and quick). Aftermarket chips (even set up for your basic engine specs) can't compare to a real time tune for your engine.

I have a feeling 3.73's might be a bit much for that combo too, depending on the extent of the heads/intake porting. 3.42's might be a better match.

What is your compression ratio, and fuel pressure?

Either way, congrats on a new best. That's a cool feeling.

 

o yea i deff know shes got more in her. Im pretty sure its all in my tuning...and i think that exhaust is raping my power. Heres the thing, when i got the car..the motor was shot, burning oil like crazy and i think it had spun a rod bearing...so i had it rebuilt. Im guessing all that time it was running without a tune and burning oil by the previous owner, probably clogged that cat. My friend had a 5.0 stang that ran 17.3..he then removed the cats and found they were clogged and then ran it again and got a 15.3. Im gunna do over the exhaust and then get it on a dyno and tune it.

It was pretty cold that night at the track too

But yea back to the tune, the car without that chip..wont even run...stall all the time etc etc. That cam has a big lift for a tpi so i'm told. Also everyone keeps telling me "your car needs a stall"...but it feels like it wants to go sooo bad at idle with my foot on the brake as my dad and friend said as well.

 

Clogged cats will do that. The Flowmaster catback is holding you back a little probably, but not that much, but definitely check the cat.

 

my compression ratio is around 10:1 i believe and fuel pressure is stock...the guy who made the chip said to leave the stock fuel pressure.

 

Okay. If the FP was different, that would obviously throw things off if they "tuned" for stock FP.
10:1 is healthy as well, shouldn't kill power there.

I'd say get some datalogging software if you don't have it, and post the results on the PROM board, many people there can lead you in the right basic direction as far as tuning goes. Every car and setup is different, but that's why you can't just throw in a chip that was made without actual tuning. You're right in that if your hard parts are good, the next thing to look at seriously is the tune.

Oh, and that does seem to be a larg-ish cam for TPI, but nothing that'll take away any power, it just won't add quite as much as it could with a higher flowing intake. Ported heads and TPI help it, though. How 'ported' are they? Just a home clean up job, tons of material smoothly and evenly taken away by an experienced shop, or something in between?

 

yea i sent all my info to alvin at pcm for less and he "tuned" it from there. But it looks like he did a pretty good job since the car runs pretty awesome. But it could deff benefit from a real dyno tune. Anyway the heads were home ported by the previous owner. When i sent the engine to be rebuilt, i gave the machine shop the heads as well..the metal between the intake ports was very very thin. But the machineshop said they were ported pretty well and basically to the max, he said i just need to make sure the intake gaskets were sealed really well to prevent crossing over gases between the intake ports. So i made sure the gaskets were sealed well with permatex hi tac.

 

A stall should help you launch better with the DR's, but shouldn't increase your MPH by much at all, which is more of an issue than your ET.

Also, a dyno will help figure out if you're lacking power, or flat running out of gear.
BTW, what RPM are you at crossing the line (in third I presume)?

 

I calculated it, it should be around 4900rpm with those specs and a 245/50/16 tire. What size DR's?

That's shouldn't really be running out of gear with that combo.

Tune!

Anyway, I'm done being bored for the night. Time for bed.

 

lol you got it...245/50 R16 nittos

stopping by perfect timing performance tomorrow and sched. a tune

my tach's busted so idk what rpm im at ...i really should address that