View Poll Results: 383 or 408
383
39
22.29%
408
136
77.71%
Voters: 175. You may not vote on this poll
383 or 408...PLEASE READ AND VOTE
383 or 408...PLEASE READ AND VOTE I decided to invest in a forged shortblock..build it up and swap it with my stocker...then sell the stock 346
Here is my question..should I go for a 383 or a 408....i know that the 408 ultimately will be the better bang for the buck...but does it involve buying parts that are much more $$ than the 383...
Also..weight...408 iron...383 aluminum...correct??
Then my third question is streetability...if i go for a 408, i will complement it with a great set of heads and a cam...will i lose my weekend driveability..
THANKS
Here is my question..should I go for a 383 or a 408....i know that the 408 ultimately will be the better bang for the buck...but does it involve buying parts that are much more $$ than the 383...
Also..weight...408 iron...383 aluminum...correct??
Then my third question is streetability...if i go for a 408, i will complement it with a great set of heads and a cam...will i lose my weekend driveability..
THANKS
ok..i see i see...didnt know that...
ok..now how about supporting mods...are heads/cam and all that the same for the 408 as they are for the 383...wousl i want to change my pacesetters to something like a 1 7/8 header QTP or Kook...
I already have the 90/90 heard 408's LOVE that!
Any ideas on this matter?
ok..now how about supporting mods...are heads/cam and all that the same for the 408 as they are for the 383...wousl i want to change my pacesetters to something like a 1 7/8 header QTP or Kook...
I already have the 90/90 heard 408's LOVE that!
Any ideas on this matter?
I'd leave the headers alone, I've seen some people get 10 hp from goign to 1 7/8 headers up on teh top of teh rpm range, but nothing anywhere else, and for teh $ that it's gonna cost you, it's not really worth it. The 90/90 is praticially a must, the elec water pump will help as it will with all setups,your head choice should be similar to the 383, but you can utilize bigger valves and whatnot due to the larger bore, so something that will put that to use would be a good idea, you can also go bigger on the cam and still remain drivable.
Banned
Joined: May 2006
Posts: 421
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Originally Posted by erikthegoalie
ok..i see i see...didnt know that...
ok..now how about supporting mods...are heads/cam and all that the same for the 408 as they are for the 383...wousl i want to change my pacesetters to something like a 1 7/8 header QTP or Kook...
I already have the 90/90 heard 408's LOVE that!
Any ideas on this matter?
ok..now how about supporting mods...are heads/cam and all that the same for the 408 as they are for the 383...wousl i want to change my pacesetters to something like a 1 7/8 header QTP or Kook...
I already have the 90/90 heard 408's LOVE that!
Any ideas on this matter?
How much do you want to spend on heads? If you are willing to spend a little money I highly reccomend ET Heads!
You will also need anagressive cam with all those cubes
FAST 90 is very good so you are set with that... I am sure you already have some sort of intake so again you are set with that....
I also highly reccomend Kooks! They are a GREAT header! 1 7/8" primaries is prob a pretty good idea.
Looks like you already have nice exhaust...
So beyond those mods you could do things like UD pulleys and an electric water pump.
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Verdad Gallardo i will be selling my complete 346 it 9only has 20,000 miles on it, its an 02...very little milage...i would sell it as a stock eninge, id put all of the stock parts back on..
what do you think my engine is worth..id keep the tranny obviously
Thanks!
what do you think my engine is worth..id keep the tranny obviously
Thanks!
Banned
Joined: May 2006
Posts: 421
Likes: 0
Originally Posted by erikthegoalie
i will be selling my complete 346 it 9only has 20,000 miles on it, its an 02...very little milage...i would sell it as a stock eninge, id put all of the stock parts back on..
what do you think my engine is worth..id keep the tranny obviously
Thanks!
what do you think my engine is worth..id keep the tranny obviously
Thanks!
It should be worth some money.....
So you gonna go with a 402?????????????????
Originally Posted by viewsonic
I believe the 408, and 402 are all 4.000 bores correct? If so then most heads out there will work fine.
How much do you want to spend on heads? If you are willing to spend a little money I highly reccomend ET Heads!
You will also need anagressive cam with all those cubes
FAST 90 is very good so you are set with that... I am sure you already have some sort of intake so again you are set with that....
I also highly reccomend Kooks! They are a GREAT header! 1 7/8" primaries is prob a pretty good idea.
Looks like you already have nice exhaust...
So beyond those mods you could do things like UD pulleys and an electric water pump.
How much do you want to spend on heads? If you are willing to spend a little money I highly reccomend ET Heads!
You will also need anagressive cam with all those cubes
FAST 90 is very good so you are set with that... I am sure you already have some sort of intake so again you are set with that....
I also highly reccomend Kooks! They are a GREAT header! 1 7/8" primaries is prob a pretty good idea.
Looks like you already have nice exhaust...
So beyond those mods you could do things like UD pulleys and an electric water pump.
TSP and HPE sell 402s. I believe W2W does as well. W2W will cost more money, but if you plan on running boost they would be the very best way to go. The AFR, ETP and Trickflow heads will cost some money, but would flow great. Esp. the ETP 245s. I think you would be fine running some CNC'd LS6 or 6.0l heads with larger valves. You could run some very large valves with a big cam and not worry about PV clearance with dished pistons. With a 6.0 or LS6 head with a larger valve I don't see why you couldn't make plenty of power.
Banned
Joined: May 2006
Posts: 421
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Originally Posted by slow trap
the 408 has a 4.030 bore.the 402 has a 4.000-4.005 bore.unless you plan on spraying i say keep the 1 3/4.as for heads,afr,et or trick flow are all great heads .but the stock casting heads will flow big air from the right companies also.
What is the bore size on a 383?
wow so many ideas....i will not be going forced induction..thatll be my next project for sure
I am going out with the gf will be back tonight to continue this discussion!!!
I am leaning towards either the 402 or 408, because of displacement...why not..
BTW Nitrous will be added, but not during swap..maybe after if I feel like it...
soo, probably direct port...i like the system by ZEX that is made for the FAST manifold..its nice...and i woudl be able to give a healthy amount of spray to the engine..
any thoughts...please post, thanks for the replies..
I am going out with the gf will be back tonight to continue this discussion!!!
I am leaning towards either the 402 or 408, because of displacement...why not..
BTW Nitrous will be added, but not during swap..maybe after if I feel like it...
soo, probably direct port...i like the system by ZEX that is made for the FAST manifold..its nice...and i woudl be able to give a healthy amount of spray to the engine..
any thoughts...please post, thanks for the replies..
On The Tree
Joined: Nov 2003
Posts: 115
Likes: 0
From: Kalamazoo, MI, USA
I was told that if you go above a 383you need to sleeve the block. That makes it very expensive. It is more safe to go with a 383 but you have more increase with a larger CI.
Good luck,
Al
Good luck,
Al
Banned
Joined: May 2006
Posts: 421
Likes: 0
Originally Posted by AKRA
I was told that if you go above a 383you need to sleeve the block. That makes it very expensive. It is more safe to go with a 383 but you have more increase with a larger CI.
Good luck,
Al
Good luck,
Al
He is talking about buying a NEW shortblock...