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View Full Version : Imco Thumper Exhausts...?



fogducker III
08-31-2010, 03:05 PM
Anybody ever tried these? Opinions, thoughts...?

http://www.cpperformance.com/p-13908-thumper-power-black-big-block-exhaust-system-wshift-bracket.aspx

mrfixxall
08-31-2010, 03:33 PM
Same as emi's and revolution,just a little different design tho..

fogducker III
08-31-2010, 03:55 PM
So for the price are they any good? SM are about $1000 more....:boggled:

mike o
08-31-2010, 04:32 PM
Shouldnt you be fogducker IIII now......:yes::kingme:

mrfixxall
08-31-2010, 04:41 PM
From what i gather they make a good stock replacement system..With the pro charger pushing over 500 hp i don't think they will work for you,they may not be hard anodised like the emi's which yield emi's to closer to 700 hp.

if you opt for the powerflow's i have a set of brand new risers ill give you a deal on..

http://www.donzi.net/forums/showthread.php?t=61109

fogducker III
08-31-2010, 05:24 PM
Shouldnt you be fogducker IIII now......:yes::kingme:

My next Donzi will be Fogducker IV..............the Scarab is III 1/2.....:boggled:

fogducker III
08-31-2010, 05:29 PM
From what i gather they make a good stock replacement system..With the pro charger pushing over 500 hp i don't think they will work for you,they may not be hard anodised like the emi's which yield emi's to closer to 700 hp.

if you opt for the powerflow's i have a set of brand new risers ill give you a deal on..

http://www.donzi.net/forums/showthread.php?t=61109

There is an anodised option for the Imco Thumpers......will the Stainless Marine hold up any better? I liked the las set I had on the Scorpion but to be honest, I find them big bucks for what they are.....:(

PS. Your risers would not fit, I need the shorties......:)

The Hedgehog
08-31-2010, 10:40 PM
If you are running shorty risers, the Thumpers are a good bang for the buck. We have a set on the 16. It has a charmed life though. Maybe 20 hours a year now and in a fresh water lake.

fogducker III
08-31-2010, 11:01 PM
If you are running shorty risers, the Thumpers are a good bang for the buck. We have a set on the 16. It has a charmed life though. Maybe 20 hours a year now and in a fresh water lake.

I hear ya, problem is, as Fix says, if I procharger this 454Mag they might not be the right thing...? Not sure if should bite the bullet and get EMI or Stainless Marine..? Both big bucks but I guess you get what you pay for...? Still need to find a Procharger...:(

dsparis
09-01-2010, 07:34 AM
escrow, or any promise of transaction protection/certification/guarantee. More info (http://www.craigslist.org/about/scams.html) Procharger for Chevy 350 Model M-1SC - $2500 (DesPlanes)

Date: 2010-08-29, 9:44AM CDT
Reply to: sale-x8qce-1925326803@craigslist.org (sale-x8qce-1925326803@craigslist.org?subject=Procharger%20for %20Chevy%20350%20Model%20M-1SC%20-%20%242500%20%28DesPlanes%29&body=%0A%0Ahttp%3A%2F%2Fchicago.craigslist.org%2Fn wc%2Fboa%2F1925326803.html%0A) [Errors when replying to ads? (http://www.craigslist.org/about/help/replying_to_posts)]

Supercharger for Chevy 350 w / Fuel Injection. While the bracket is for Chevy with another bracket you can use for different applications.

CALL TOM AT 847-294-1195 TO SCHEDULE AN APPOINTMENT



Location: DesPlanes
it's NOT ok to contact this poster with services or other commercial interests

http://images.craigslist.org/3k93ob3lc5O55W05U1a8t4e6005cce6ff14f1.jpg http://images.craigslist.org/3ne3pc3le5O65V05P6a8t4d5d0c08493a11a5.jpg http://images.craigslist.org/3ma3oa3p65Q05U25X3a8tb46f636ccab81b15.jpg http://images.craigslist.org/3ka3m93l75O65W05S5a8t674c38bf6eef1fa5.jpg
PostingID: 1925326803

CHACHI
09-01-2010, 08:42 AM
Jeremy, I have EMI headers with fusion coat on my 454. These were on the boat when I bought it. I really don't know how much HP they can handle, it is a stock EFI motor, but I can tell you that I have had zero problems with the headers. Even the fusion coat looks new and I am guessing that the headers are 6 years old.

Ken

fogducker III
09-01-2010, 09:46 AM
Thanks dsparis for that link, I will call the seller but it looks like they are serpintine pulleys and being for a 350 I would have to change a few things, but worth the call for sure.

Chachi....I am leaning towards EMI....I found a local guy wno can get them, just need to work out a price....:)

gcarter
09-01-2010, 09:47 AM
I think SM are thouroughly and very well coated.
I've seen some very attractive prices on some used SM sets on eBay.
Also Gils.

fogducker III
09-01-2010, 10:02 AM
No go on the Procharger, nothing would fit and he has "modified" the intercooler to fit a carb set-up....:(

The Hedgehog
09-01-2010, 02:29 PM
No go on the Procharger, nothing would fit and he has "modified" the intercooler to fit a carb set-up....:(
I would not worry about the cooler. That is an easy fix. All the brackets on the other hand, yikes. Any of the mentioned systems will work on a Procharged engine. I put Dana's on my blown 502 and picked up zero mph. It did drop one lb of boost due to better breathing and I got better throttle response. They were a good mod. You don't need much better exhaust until you start opening up the heads and adding cam.

yeller
09-01-2010, 06:16 PM
Thanks dsparis for that link, I will call the seller but it looks like they are serpintine pulleys...The Procharger belts/pulleys are independent of the rest of your setup. I know your not interested in the posted unit, but don't worry about it coming with serpentine belts.

fogducker III
09-01-2010, 06:36 PM
The Procharger belts/pulleys are independent of the rest of your setup. I know your not interested in the posted unit, but don't worry about it coming with serpentine belts.


Comprende.......so none of the Procharger belts run any of the accessories? I must have to change the main crank pully that drives the unit though?

The Hedgehog
09-01-2010, 06:45 PM
Comprende.......so none of the Procharger belts run any of the accessories? I must have to change the main crank pully that drives the unit though?

I think it taps into the crank pulley. Either that or you can get one from ATI. no big deal. I will look at mine when I get back home. I am out earning boat money right now.

fogducker III
09-01-2010, 06:59 PM
I think it taps into the crank pulley. Either that or you can get one from ATI. no big deal. I will look at mine when I get back home. I am out earning boat money right now.


You mean it just fastens onto the existing pully?

Boat money is good.............:yes:

yeller
09-01-2010, 08:00 PM
I think it taps into the crank pulley. Either that or you can get one from ATI. no big deal. I will look at mine when I get back home. I am out earning boat money right now.
I was going to say the crank pulley is seperate and bolts onto the existing one, but truth be told, I've never taken it off so don't know for sure. I do know (for sure) that the B&M mini-blower I had, had a crank pulley that bolted to the existing one. That's why I assume the Procharger is the same way.

But, yes Jeremy, there is a single belt only for the procharger. Crank pulley, S/C pulley and the tensioner is all that touch it.

mrfixxall
09-01-2010, 08:27 PM
i don't know how the serp belt set ups come but the v belt come with the whole lower pulley,theirs a option for a 12 rib set up which i have that keeps the belt slippage down,they also supply shims for proper belt alignment..