M1tch

Hey guys I just picked this car up yesterday and got a smokin deal on it. Whoever built this car did some really good work i'll try to post some pictures up when i get a chance. Its fast, loud, and launches straight! I have no idea what to expect at the drag strip.

Heres what i know about the build..

454 .030 over
12.5:1 dome pistons
Forged bottom end h beam rods steel crank
Edelbrock Performer RPM heads
Edelbrock performer rpm intake
Not sure on cam specs
Electric water pump
manual gearbox
th400
Ford 9" with disc brakes and wilwood pads
6 pt roll cage, battery in truck, switch behind license plate
MT 28x15" slicks

more info on cl ad
http://toledo.craigslist.org/cto/3839869045.html

If you guys have seen this car or build on this forum let me know. I'm trying to figure out everything i can on this car but its definately been done right. I'm hoping to run mid to high tens in this thing

M1tch

Anybody with any big block experience know what it should run?

Guest

Run it and find out.
/thread

FSTFBDY

iTrader: (33)

should be fun. Get it out to the track and see how she runs.

1st thing I would do is get rid of that B&M shifter and put in one of the following prostick , cheetah or scs shifter.

M1tch

Yea I can't wait to get it out to the track. I'm running it either Wednesday or this Friday. I have to get an air dam on it first before i can drive it anywhere too far. I think the guy that built the car just drag raced it. This thing has wicked torque and top end though i can easily burn the slicks from a dig or any type of first gear roll. The shifter is working great though why would you get rid of it?

FSTFBDY

iTrader: (33)

NIce post some times once ya run it. As for the shifter I just never liked any of the b&m shifters. The others I listed are a night and day difference in performance on the track for use.

transamws6

Im guessing 11.05 1/4 mile with good tires

M1tch

Ran the car but all 3 passes foot braking it i passed the line before the tree went so it messed up my et. my traps were 94 1/8 and 116 1/4 but im having some issues with it flat lining at 5000 rpms in 3rd gear. I posted a thread in the engine tech forum.

https://www.thirdgen.org/forums/tech...ml#post5615037

PhoenixFirebird

iTrader: (2)

116 mph is right around 11.60s-11.70s or so. Give or take a bit, depending on if it mph's high or low. My car traps 111-112, and it runs 12.1x normally. A guy I pit with runs 12.0x at 108. If I remember correctly though, 118 mph is the norm for 11.5x.

FSTFBDY

iTrader: (33)

nice times! Whats your buddy 60fting with those 12.0s @108 Just curious cuz my '97 traps 107 and runs 13.1x's.but a shitty 2.0x 60fts.

M1tch

Either way my car isnt running up to par. I should be trapping 125 so were trying to figure out if its a fuel or ignition issue

FRMULA88

I see dual exhaust on the CL picture what are the headers connected to?

If it's the stock size collector pipe and cross flow muffler that would create a major restriction at high RPM... were you running thru the full exhaust at the track?

If so try running open headers next time (especially if fuel pressure adjustment etc. has no effect)

If you want a full exhaust system you need at least a 4" collector pipe and muffler with 4" intake & exhaust.
I have a mufflex system on my car which I bought in 2000.. the system is still like new.

A true dual is hard to do on this chassis unless you modify the floor pans or perhaps use oval pipe and dump ahead of axle. I used the mufflex system to get the best ground clearance.

I also installed car chemistry inserts in my header collectors a few years ago.. what a difference those got rid of that aweful flowmaster drone.. & the car sounds great. but I am going to track only so going to just run open headers with the inserts.. I am done with the street with my car...

FRMULA88

http://www.mufflex-performance.com/6...m-1982-to-1992

Not a cheap system but it works and fits perfect, mine has lasted 13 years ! and still looks great. Granted it's not a daily driver but most of these toys will never see snow or rain ever again.

I also have the off-road y-pipe which I modified (cut shorter) when I switched from 3" Hooker headers on my 383 to 4" Lemons headers on my 421.


If you want to run full exhaust on a high power F-body, IMO this is the kit to look at.

Personally I think the single 4" system is under-rated at 400 HP

It will easily keep pace with a dual 3" and easily out flow a dual 2 1/2"

here's a break down using simple math:

A single 4" collector pipe: 12.56 sq. in

A dual 3" system: 14.1 sq. in.

A dual 2 1/2 system: 9.813 sq. in

A single 3" collector pipe: 7.065 sq. in.

The factory 2 1/2 collector pipe: 4.906 sq in YIKES
(if your big block is running thru this, you have a major restriction at high rpm)

FRMULA88

here are some guides to help...

http://www.magnaflow.com/07techtips/faq/question10.asp

http://www.dynomax.com/assets/2013ca...echsection.pdf


A 4" single pipe system would be fine for the street ,at the track you can always drop the y pipe.. and see if goes faster..

A dual 3" exhaust (complete system) would be very heavy & hard to fit and offer no real performance advantage over a 4" single pipe in the same HP range.

IMHO I would check the exhaust out on that car... run it open headers and see if the "flat line in 3rd gear" goes away.

M1tch

Its got dual 3" exhaust but i wouldnt mind running open headers

FRMULA88

Hard to tell the size from the tailpipes, looks stock.

How did they route the exhaust pipes? because there is no room on the driver's side unless they used oval pipe or crushed the hell out of the 3" round or modified the floor pan to clear the ground. Then you have to go over the axle the passenger side is OK but how does it clear the gas tank on the drivers side? unless is has a fuel cell in the trunk to make some room?

I am curious can you send me a pic of the belly?

something else to consider: cross flow mufflers do have a lot of backpressure.

M1tch

Well i've got some more news, me and my friend mounted the fuel pressure gauge so we could see it while driving and we dropped the fuel pressure so it never goes above 7. adjusted the idle mixture and it seemed to like it alot better and we were just getting ready to try a 3rd gear pull and my second gear randomly went out. I think the trans got hot from the converter slipping at low rpms driving around town unless the sprag went bad. I started it up yesterday and it went into 2nd gear fine and moved normal on the driveway but i didnt take it down the road.

Another thing is he has the pcv lines routed to the exhaust and those mufflers could be caked with a little bit of oil in the chambers clogging it up not letting it breath like it should

I'll try to post a picture of underneath the car

FRMULA88

Sounds good, I posted some feedback on your other post. If the car still falls flat in 3rd gear the carb may simply be too small for this application..

Sounds like you have transmission issue now also.

The pcv lines routed to the exhaust is not an issue, you will see this mod at the drag strip all the time. The lines go to the header collectors and crankcase vapors are burned off by the heat of the exhaust gasses.

If you don't like that, you could re-route to a "catch can" but you will have to remember to drain it, would be a pia if this is a street car rather than a track car.

FRMULA88

Does this car have an external trans cooler or is the transmission being cooled by the radiator?

This is mod worth doing, for the street and even the track.. You will get cooler trans fluid temp. = longer trans life. Then the radiator only has to cool the engine.. not both.

Ditch the stock transmission pan and get one with cooling fins, install a trans temp gauge too if you want.. Mine never goes above 180

PhoenixFirebird

iTrader: (2)

About the same as me, 1.67-1.69. I've been as low as 1.66, but the car didn't like leaving higher on the converter and actually gave me a slower ET than leaving off say 1500. Not sure why my car traps higher than it should. Compared to most of the guys at the track, I have a fast 60' for the weight, a slow 1/8th mile ET and mph, a normal 1/4 ET, and high mph. It's goofy lol.

Actually this weekend, I hit 12.11@113 with a 1.69 60'. I dunno why it likes to mph so high.

GenX'Motorsport

^ What converter do you run?

67camarorsss

FWIW. .030 over 454 is a 460. Nontheless, Rat motor in a 3rd gen is something I always wanted to do, even had a perfect stripper 89 RS that was my DD that I was going to use. Too many projects and not enough time means I never got around to it.

ZONES89RS

iTrader: (2)

That trap is very poor for the cubes, I just trapped 100.00 with y lighter rustang and 6.0, with the same engine in my 6 speed 89 rs it hit a best of 97.

PhoenixFirebird

iTrader: (2)

I run a TCI 3000, it flashes just above that with 385 cubes.

M1tch

That is why i'm getting my car looked at but on a side note there is a huge difference in power between 100 and 116.5.

cuisinartvette

didnt catcht the size carb
Is it puking some in lower gears above 5k? Check valvesprings, where your total timing is etc
Usually something simple.
How large are the fuel lines? mech or electric pump?