What motor to go with?

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I have a fiberglass 6pak hood...cruising yes but I would like to be able to put my foot down and scare people...a mild street car.
 
I have a fiberglass 6pak hood. I have headers and intake...Its for cruising but Id like to be able put my foot down and scare people lol mild street car.
 
My friend wade who is a member of this site runs a 10.1 340 w/tunnel ram.....and a 904.

No issues, and I sold him the trans to know thee is no $pecial magic done to it other than quality parts-clutches/bands and a transgo shift kit.

You're not gonna blow it up, but then again...there some really lame people who can break anything if they are allowed abuse and tinker it enough..not saying ur one, just saying it like a disclaimer.lol
 
cjackson3396 said:
I was looking for the 727 because it was mentioned to me that it might not hold up to the 318 after i built it the way i was going to...The 727 came with the hi-po 360 thats only reason I was asking...and Yea i gunna go threw any motor I buy... I had never heard of a Hi-Po lol thats why I was confused
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my advice it to find some one else that actually knows what the hell they are talking about to get advise from. whoever has been filling your head with garbage need to go.
 
ok ok...so the 904 will prolly be fine....now with the original post that I had what do you think i'll get out of the 318...I will prolly go with crazy's advice with the head work or any suggestions...

(keep the 318 go what .030 over throw the 360 Ported heads on it along with a cam and flat top pistons)
 
and give me some credit :) lol I talkin to people who know what their doin I talking to you guys right so letting you guys set me straight
 
cjackson3396 said:
ok ok...so the 904 will prolly be fine....now with the original post that I had what do you think i'll get out of the 318...I will prolly go with crazy's advice with the head work or any suggestions...

(keep the 318 go what .030 over throw the 360 Ported heads on it along with a cam and flat top pistons)
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well 'how much hp' as a guess can be argued.

you see 318 builds with a similar or same simplicity make 400hp , so they say..


it shouldnt make less 325 hp.....ill say 350'ish hp on the conservative side.

U could say 20hp'ish below what a 340 'built the same' would make....which could be higher.
 
The 904 does need some beefing up. If you just get a run of the mill 904 it won't last a long time behind a strong 340 if driven hard daily.

My old trans guy preferred the 727 over the 904. Said it was easier to adjust the shift hardest just were you want it. Told me it would last even longer then the many years the 904 would. In his mind the 15 extra hp with the 904 wasn't worth it.

I still got the 904 trans, his brother took over and he was more for the 904's
 
1wild&crazyguy said:
I believe the 904 'most yrs' shared the same 1st gear ratio as the 727, others were even lower.

the 998 & 999 [904 family] have the lower 1st & 2nd gears...that swap into the 904 with ease.

They are raced all the time.
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I know lots of guys racing 904s but they are puting tons of money in them to make them hold up. Why bother wasting money to tuffen up a 904 if he is going to already have a 727. Spend the money on your motor. I can smoke a stock 904 in my Duster in about 20 min. Got sick of laying under the car. If 904s are so nice how come they never put them behind a big block? Was wrong on the lower 1st gear. 727s have a 2.45 1st and 904s have a 2.70 1st witch they needed because most 904 cars were extremly high geared 2.94-2.76s
 
swinger340 said:
I know lots of guys racing 904s but they are puting tons of money in them to make them hold up. Why bother wasting money to tuffen up a 904 if he is going to already have a 727. Spend the money on your motor. I can smoke a siock 904 in my Duster in about 20 min. Got sick of laying under it. If 904s are so nice how come they never put them behind a big block?
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You can run mid 11's for years with a 904 that has no exotic parts in it and not have tons of money in it either. Quality parts yes .. put together but someone that knows what they are doing ... yes. But big dollars not necessarily. I bane a guy that will build one in the $600 range that I've seen go over 1000 mid 11 sec runs and god knows how many street miles before he took it out for the hell of it to freshmen up. My 904 has been in my car since 06 and has had the ever living **** beat out of it for thousands of street miles and numerous low 12 second runs at the track. Nothing special or expensive in mine either. It's a $600 trans.
 
abodyjoe mabe your lucky, im very unlucky, or your tranny guy knows his ****. I just got sour w 904s 3 trannys later. The last one was built up w a heavier drum, extra clutches and heavy duty bands. It did last almost 2 years but should have lasted longer for $900. Im running a 10.5:1 eddy headed roller 340 that is around 450HP. My brother in law swaped out 2 904s w a basicly stock 70 340. Mabe w your tranny guy and a strong running 318 this car would be a sweet cruiser. As long as he dont have my luck. Spend $900 on a 904 that lasts 2 years and then $1000 later on a 727 that i should have done to begin with. Just sharing my experiances. Not realy saying one way or the other. Diff combos work for diff people. As long as it stays together thats all that counts.
 
Yea you need a new trans guy.

The other problem with the 727 is the time bomb huge *** stock drum. More likely to explode compared to the smaller lighter 904 drum when that ***** is really spinning.
 
abodyjoe said:
Yea you need a new trans guy.

The other problem with the 727 is the time bomb huge *** stock drum. More likely to explode compared to the smaller lighter 904 drum when that ***** is really spinning.
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Funny you say that. Buddy of mine has a 70 dart w a 525 hourse 408 and had a TCI tranny blow at the strip. The drum broke while launching @ 5000 rpm pieces flew through the case up through the floor shattering his right foot. Very bad day. That kind of houre he should have had a shield.
 
Ok thanks for the info guys...yea I wana try get as close to 400 as I can get..I had a 78 z28 that was mid 400s loved that car but of course was 355 with $6000 in work So i can do a simple build on the 318 get it up a bit...anything else I can add to list to get more...Thats other reason I had mentioned a 360..alot easier to get up there...not so much work But i lose the numbers matching aspect.
 
swinger340 said:
I know lots of guys racing 904s but they are puting tons of money in them to make them hold up. Why bother wasting money to tuffen up a 904 if he is going to already have a 727. Spend the money on your motor. I can smoke a stock 904 in my Duster in about 20 min. Got sick of laying under the car. If 904s are so nice how come they never put them behind a big block? Was wrong on the lower 1st gear. 727s have a 2.45 1st and 904s have a 2.70 1st witch they needed because most 904 cars were extremly high geared 2.94-2.76s
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got 3 904s racing...2 currently using trans brakes...one still foot braking...

one trans has been in uses since 1993 with a transbrake and has only been rebuilt once due to ring gear braking and damaging rear sprag...in 69 Barracuda..

2nd trans has been in use for 5 season with transbrake in my daughter 71 Dart...

take a look at the times in the signature below..and they have dates that those were run...

'tons of money"......all three trans are using stock internal parts except alto clutches and kolene disc...only special part it the 24 spring kit for the front drum...which is a one time purchase of 100 bucks...

since the front drum on a 904 does not explode like a 727...which will cost 500 bucks to replace...it seems to me that the 727 needs the tons of money and beefing ....anyone rebuilting a 727 should use the alto disc and kolene steels since they add a staggering 40 dollars to a rebuild which is the same cost to a 904

And I use a truly highly professional transmission shop... ...me and my 200 dollars worth of transmission tools bought about 6 yrs ago..which is the first time i rebuild a trans...727 in my 73 340 Duster...

the 727 came from the factory with only one gear set...the 904/998/999 comes with an additional gear set of 2.74/1.55...which i have in my 71 demon ......the transbrake for this car should be sitting at home in Vegas...but i am currently working out of town....
 
cjackson3396 said:
Tryin figure what Id have to do to a 360 to get it up to 400hp...
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you can do that with the same bottom end, just need more cam than the 268* comp....im just being conservative...

318 9.7-10.1 comp
mildly ported 360 heads flow in the '245-250 cfm range'
headers 'cheap or tti'
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=670&sb=0
that will sound good and pull hard into the r's which is what that short stroke & long rods like.
rpm intake gasket matched w/heads
650-700 holley carb
2800 stall
3.55-3.91 gears

heres some other builds that make the 400 number

http://www.popularhotrodding.com/enginemasters/articles/mopar/0667em_mopar_318_engine/viewall.html

http://www.moparmusclemagazine.com/techarticles/mopp_0409_318_engine_build/viewall.html

http://www.hotrod.com/howto/113_0304_318_small_block_build/photo_07.html

theres another with a 9.5 comp 318 and 360 heads with a small'ish .480 cam making 400 as well, i have that artical/magazine on the shelf.
 
I lost you at the "bore 0.030". That would give you negligible HP increase. It is mainly done to repair worn bores. If you have bad rings, often a hone and re-ring will fix it (cheap), without a re-bore and new pistons ($$). Have you checked compression & blow-by? No need to rebuild a perfectly good motor.

If you want a cruiser, you want a smooth idling engine, with good low-end torque. That means a mild cam, 2-barrel manifold or dual-plane 4-barrel. 2-barrels were designed for that, since the average driver prefers that. To the average driver, when they say "powerful engine", they mean good off the stoplight torque, not max horsepower at high rpm with the engine screaming.
 
Thanks again Crazy....the "recipe" you listed i got most of that except converter...What if I added flat top pistons? they aint a bad price...and idk if I'm going to have to bore or not yet...I was told maybe .030-.040 over but will that kill me?
 
cjackson3396 said:
Thanks again Crazy....the "recipe" you listed i got most of that except converter...What if I added flat top pistons? they aint a bad price...and idk if I'm going to have to bore or not yet...I was told maybe .030-.040 over but will that kill me?
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Overbore ups the cid, cool.

What/which pistons exactly?

need to see what they give with different chamber volumes.
 
Keith Black/KB Pistons 1278-040 - Silv-O-Lite Cast Pistons... or if you guys can suggest something different..remember tight budget...gotta pay for heads and head work and cam still
 
K thanks again...trying get a decent quote on the body work but damn people want alot to paint a car
 
If you are on a budget build the 318 and if possible put some good pistons in there to bring that compression up; that is critical if you want to run the 360 heads. And just run that 904 for now since its fresh; a TransGo TF-2 shift kit would make it shift good.
 
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