350HO, What would you do next?
Thread Starter
Race Director
Joined: May 2003
Posts: 11,814
Likes: 9
From: Science Bitch! Mississauga, Ontario
Canadian Events Coordinator
350HO, What would you do next?
I bought the 350HO (330hp/380tq) this year and love the power, but....
...I'll eventually want more power.
What do you think I should do next??
- N2O and blow it up
- Stroke it to a 383
- Save my pennies and go for a 502BB??
Les
...I'll eventually want more power.
What do you think I should do next??
- N2O and blow it up
- Stroke it to a 383
- Save my pennies and go for a 502BB??
Les
Pro
Joined: Aug 2004
Posts: 732
Likes: 1
From: Green Lake Wisconsin
I would stroke it beofre going with nitrous...power is always immediately available by just simply mashing the go pedal...stroke it up to a 406, skip the 383 if you are going to do it. Heck, I would cut a hole in the hood and put a blower on it like norval did before considering nitrous.
A big block would be nice, but thats a lot of pennies, and thats before you even get into the whole pulley mess and all the other little odds and ends that you will need.
A big block would be nice, but thats a lot of pennies, and thats before you even get into the whole pulley mess and all the other little odds and ends that you will need.
Team Owner
Joined: Feb 2005
Posts: 32,519
Likes: 1
From: central America
St. Jude Donor '08-'09
I wouldn't run the N2O! That thing only comes with hypereutectic pistons...oh wait you said blow it up, funny 
I vote for bigger cam.
What's the flow on those heads? I bet a head and cam kit could go a long way. Look at one of those matched holley kits.
trw
I vote for bigger cam.
What's the flow on those heads? I bet a head and cam kit could go a long way. Look at one of those matched holley kits.
trw
Thread Starter
Race Director
Joined: May 2003
Posts: 11,814
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From: Science Bitch! Mississauga, Ontario
Canadian Events Coordinator
Originally Posted by Redshark6974
I would go with a hyd. roller cam...and maybe some better heads..should get you to 400+hp easily.
Would it be worth it to polish/port the heads? I figure if I do that and get a new cam I can be pushing 400hp.
...or are new heads around the same price of machine work to the old heads?
Les
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Team Owner
Joined: Feb 2003
Posts: 30,183
Likes: 313
From: Lake Norman NC
I don't know if i'd invest having work done to cast iron vortec heads. You can get a nice aluminum head at a decent price. If anything, you could get a nice roller cam, change the springs, and full roller rocker arms..that could be a good start to getting near 400hp. I remember reading a mag that had an article where they did a cam swap on this engine, and made like 400hp.
Le Mans Master
Joined: Jun 2002
Posts: 8,339
Likes: 24
From: I can walk to MA
I was gonna call your bluff on the "FINI" comment in your sig.
Never FINI !!!
You beat me to it.
I would enjoy the new motor for at least the warranty period ....
get some miles on it - then stroke or rebuild to higher specs
if you feel the need. Rear gears are a good idea: not too expensive
and it sounds like you are looking to tear the suspension out anyway ... perfect time.
Never FINI !!!
You beat me to it.
I would enjoy the new motor for at least the warranty period ....
get some miles on it - then stroke or rebuild to higher specs
if you feel the need. Rear gears are a good idea: not too expensive
and it sounds like you are looking to tear the suspension out anyway ... perfect time.
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
Originally Posted by AGVI
I bought the 350HO (330hp/380tq) this year and love the power, but....
...I'll eventually want more power.
What do you think I should do next??
- N2O and blow it up
- Stroke it to a 383
- Save my pennies and go for a 502BB??
Les
...I'll eventually want more power.
What do you think I should do next??
- N2O and blow it up
- Stroke it to a 383
- Save my pennies and go for a 502BB??
Les
Safety Car
Joined: Mar 2005
Posts: 4,255
Likes: 82
From: Brampton Ont.
I would recomend giving your car to Maymyvetteliveforevr to drive for a couple of months until he's had his fix, then think about putting a O.D. trany with a higher stall speed. This way you'll increase performance while adding to your fuel economy. I'm assuming you have 3.08 gears. After the change over is complete, lend it to Maymyvetteliveforevr so that he may take it for another 2 month test drive.
What are friends for. And Les......it would be my pleasure.
What are friends for. And Les......it would be my pleasure.
Racer
Joined: Mar 2005
Posts: 473
Likes: 2
From: Champlin Minnesota
AGVI, Got the same engine as you, and I am thinking of a TKO600 with new rear gears, and maybe even fitting a fuel injection system on it. Let us know what you decide and how much of an improvement it is.
David
David
Instructor
Joined: Jul 2003
Posts: 210
Likes: 0
From: eaton rapids mi
Originally Posted by AGVI
I bought the 350HO (330hp/380tq) this year and love the power, but....
...I'll eventually want more power.
What do you think I should do next??
- N2O and blow it up
- Stroke it to a 383
- Save my pennies and go for a 502BB??
Les
...I'll eventually want more power.
What do you think I should do next??
- N2O and blow it up
- Stroke it to a 383
- Save my pennies and go for a 502BB??
Leshttp://www.carcraft.com/projectbuild...ail/index.html
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
Originally Posted by AGVI
- N2O and blow it up
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
As you may remember Les, I also have the 350 H.O. In my case the next mods in order are 1)Replace the stock hooker mufflers with something better flowing 2)OD transmission 3)Holley double pumper or Demon carb (Edelbrock 1406 now).
Sounds like your exhaust and carb may be all right so if it were me I'd throw some cash at a taller rear ratio and an OD trans before doing much to the engine.
Sounds like your exhaust and carb may be all right so if it were me I'd throw some cash at a taller rear ratio and an OD trans before doing much to the engine.