• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

360 to 408

im looking for a mild thumper. dont really need alot of performance from it just need it to sound good hahaha. again its going to be a parking lot princess. just needs to be big an scary enough that the bullys stay away =)
well.... i went with a howards....

which sounds like...

 
Yep, a oem 360 flex plate would work fine, or just use the one off your 318. The best survival of a 904 would be to put new clutch seals in it, if it hasn't been overhauled recently. When you turn the pressure up in a shift kit, the old seals are the first to go and you will burn up a clutch pack. A 727 certainly is stronger then a 904, but a built 904 is very stout.
Any chance the 318 flywheel will work as well or is that wishful thinking?
 
Did you mean flexplate? if the 408 is internal balanced then i believe so... also make sure not to use the 360 harmonic if you are internal balanced
no. i need to get a flywheel as well because i dont have one. just wondering if the flywheel would be able to swap over. yes from what i understand the flex plate and the balancer should both be neutral balanced.
 
Fyi...a 318 LA head also has smaller intake and exhaust ports then the 340 and 360 did. Even if someone was building a stroked 318...I would use a head with the bigger ports. 340 and 360 had bigger valves as well, at least on the older engines. I wouldn't consider using a LA 318 head on a stroker, unless I had 2.
 
Last edited:
Fyi...a 318 LA head also has smaller intake and exhaust ports then the 340 and 360 did. Even if someone was building a stroked 318...I would use a head with the bigger ports. 340 and 360 had bigger valves as well, at least on the older engines. I wouldn't consider using a LA 318 head on a stroker, unless I had 2.
no i think im for sure getting new heads. just trying to see what will get me the most bang for the buck.
 
do you know what all he needed to hook up the 408 to the 904 by any chance?
I did ask the owner of the Aspen and his reply is this:

What I did to hook up the 904 to the 408?

It's the factory 904 that came in the car behind the factory 360

You will need a neutral balance converter and balancer for the 408.

Brad was running pretty much stock for years but a couple years ago he got ahold of SMR and bought a bunch of performance upgrades like aluminum drum and full manual valve body and red clutches.

SMR runs a 904 behind their Hemi in a Dakota.
 
Here's a tidbit; you can't run a b& m flexplate in a 904 with a mini starter.
 
I have NOT read this whole thread, but......
I'd look into the Sidewinder small block heads, for a quality budget aluminum head.
I'd get a set from Todd Marsh, Marsh performance.
 
I did ask the owner of the Aspen and his reply is this:

What I did to hook up the 904 to the 408?

It's the factory 904 that came in the car behind the factory 360

You will need a neutral balance converter and balancer for the 408.

Brad was running pretty much stock for years but a couple years ago he got ahold of SMR and bought a bunch of performance upgrades like aluminum drum and full manual valve body and red clutches.

SMR runs a 904 behind their Hemi in a Dakota.
this is great. thank you. it provides a lot of validation to most of the opinions ive seen.
 
I have NOT read this whole thread, but......
I'd look into the Sidewinder small block heads, for a quality budget aluminum head.
I'd get a set from Todd Marsh, Marsh performance.
Awsome. I will check these out thanks for the advice.
 
Auto Transport Service
Back
Top