70455goat

Hi everyone,

My Goat is running 100 times better and it didn't cost me a penny!!!

I bought my 70 with original 455 in October. It starts and seems to run okay, but when I would stomp on the gas, it would downshift and seem to be revving high, but really wouldn't be doing much. In fact, it seemed to have less power after I punched it enough to make it downshift. The car seems really low geared too, like its still in second at 50 to 60. I wasn't going to worry too much about it until I get it converted over to electronic ingition with an MSD box and have the carb gone through.

I drove my Goat to work for the first time Friday, about 75 miles round trip. Before that, all I've done is cruise it around a few times, and since it doesn't seem to have any power when I punch it, I really didn't want to be doing that too much. I never thought about it, but the Goat I bought hasn't been driven much for the last 4 or 5 years.

When I got off of the freeway on the way home, I punched the goat and holy sh--! It laid rubber for about 40 feet and came unglued when it shifted to second! I couldn't believe it. All it needed was to be driven and get the cobwebs blown out!

I'm going to get the spray can of carb cleaner out tomorrow and put some down the carb with the car running. That should help get the 455 running a little better. It still has those 70 sounding mufflers that I need to get swapped out with some Flowmasters.

Just thought I'd share my good news.

 

raspantienator

Absolutely-the cars do need to be driven.

I put flowmasters on my 455 and with headmen headers and a cam, I can tell you that just as many people loved the sound of the car as the looks of the car.
I was the official alarm clock of the neighborhood!
The mufflers will wake up the sound of your your 455.

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Rukee

I had a `76 Pontiac Ventura with an Olds 260 v-8, and that car would feel like it`s gunna stop @ 60mph if you hit passing gear. It was great in the winter though, it didn`t have enough power to spin the wheels. :p

likethat

Use to roll around in my friends 78 cutlas with the 260. He had a set of eale GT's that looks as new as the day he bought them all most 3 years after he bought them. I think the old VW bug my mom drove would whoop that cutlas' butt up hill in a head wind.

Tri-Power

congrats. I remember the first time we got the tri-power tuned in, I had been just driving it places w/ the center carb, man it was amazing hitting those 6 barrels, well i guess it still is though

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1966 GTO bored 389 Tri-Power, Powerglide(#'s Match)

{GTO, Explorer, Galaxie, Glastron, & Yamaha} -Tyler-

70455goat

Tri Power,
You mean it ran better with 6 barrels that with 2!!!!

Yeah, I was really surprised when I first took it for a test drive and it really didn't get up and go. I figured with a tune up and some tinkering around on it, I'd get it running better. I sure felt a lot better, when I got off of the freeway and it came unglued when I stomped on the gas. It felt like it had been running on 4 out of 8 cylinders, only it wasn't running rough.

Tri-Power

Yah, who woulda thought?

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1966 GTO bored 389 Tri-Power, Powerglide(#'s Match)

{GTO, Explorer, Galaxie, Glastron, & Yamaha} -Tyler-

646904GTO

Just a suggestion on muffler choice...Do your research flowmasters aren't really 'masters of flow' the Flow-Tech Terminator is a better flowing muffler and has a different sound, more of a crack when your on the pedal than the flowmaster thud. When I go to car shows with my '64 roadracer my car sounds much different than the drone that everyother muscle car sounds like. I'll admit that my '69 has FM's on it though. My wife told me that the '64 just didn't sound like all my other racecars. So I bought the flow-tech's because that is what we used short track racing. Instant HP gain. their site says 15%. seems pretty acurate. you can find them at Summit Racing - High Performance Car and Truck Parts | 800-230-3030 Just my 2cents

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1964 400 4 speed RoadRacer
1969 400 T400 auto 2nd owner
2004 LS1 6 speed modded for roadracing

70455goat

Great thread.....too late! I installed a set of 40 Series Flowmaster the other night.

I have them on my son's 69 chevelle and really like how they sound on the 350 chevy. I will admit, I wasn't as thrilled as I thought I'd be with the sound on my 455 pontiac. It's loud, but didn't sound like I expected.

When I let off of the gas, the exhaust still goes pop pop pop. I thought is was just the cheap mufflers that was on it, but it still makes the same noise. Could it be the engine is running to rich or something? Its not backfiring or anything, just making that anoying sound when you let off of the gas and coast.

Dale,

raspantienator

I felt the same with my 455's installed headers. I really got pissed off when beater trucks went by with headers with that sound I was hoping for with the 455.

I love the sound of the 05 GTO which is why I'm hesitant to mess with it for power gains.

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