ENGINE COMBO ADVICE

[justcruisin]

Hi everone
I am doing my first 440 build and have got alot of ideas off the web. Could you all see if i'm on the right path for my build.
Charger, auto, 3.23:1. 440+40 srp pistons, 10.1:1 comp, zero deck, K1 rods, lunati 60304 cam, prw 1.5 roller rockers, edey rpm heads and manifold, 850 mech sec/ or 780VS,(i allready have the 780 but can change it) 1' 7/8 headers, b&m holeshot 2400 converter.
Car will be mostly street use, weekends only.
I want highway gears but I would like to fit a gearvendors and 3.91's as money will allow at a later stage.
Any comments would be apreciated, thanks.

[redmist]

My exact build for the most part.

I am using the Comp XS282S solid though.

440  .030 over
SRP Flat tops
Zero deck
K1 rods ARP 2000
Studs, studs, and more studs.
EdelbrockRPM OTB heads
RPM Intake
750 DP
1 7/8" Headers.
3.55 gear
Holeshot 2400 (because I already have it.)

Camquest says  540ish HP

I would think you would want some more gear, and some more converter.

[justcruisin]

Thanks for that, I was told the converter behind the 440 should flash around 2800-3000, have you got first hand experience on this?

[elacruze]

Save the Rod money for gas. Use the stock rods with ARP bolts. On a build this mild, rods are overkill.

[justcruisin]

The original rods are 6 pack, ive been told to ditch them.

[elacruze]

The original rods are 6 pack, ive been told to ditch them.

What reason was given? Chrysler didn't engineer them willy-nilly.

[firefighter3931]

The 6 pack rods are heavy and only use small 3/8 bolts. By the time you recondition/resize them you're 3/4 of the way towards a new set of h-beams. 


Ron

[elacruze]

The 6 pack rods are heavy and only use small 3/8 bolts. By the time you recondition/resize them you're 3/4 of the way towards a new set of h-beams. 


Ron

<sigh>

Chinese labor wins again. You're right, of course.

[justcruisin]

The rods are way heavy and no stronger than the LY rods. The 6 pack rod and pistons I have weigh over 2000 grams. Plus they are 40 years old and will need resizing etc. I want to internally balance the engine also.

[firefighter3931]

<sigh>

Chinese labor wins again. You're right, of course.

I got a set of Scat's for $400 on e-bay....machined in the USA 

The rods are way heavy and no stronger than the LY rods. The 6 pack rod and pistons I have weigh over 2000 grams. Plus they are 40 years old and will need resizing etc. I want to internally balance the engine also.

Exactly....order them with the .990 pins for a little weight reduction. 



Ron

[justcruisin]

Ok thanks, do you have any comments on the carb choice? The 780VS I have is a quick fuels, so I would have to exchange it for another quick fuels.

[BSB67]

Hi everone
I am doing my first 440 build and have got alot of ideas off the web. Could you all see if i'm on the right path for my build.
Charger, auto, 3.23:1. 440+40 srp pistons, 10.1:1 comp, zero deck, K1 rods, lunati 60304 cam, prw 1.5 roller rockers, edey rpm heads and manifold, 850 mech sec/ or 780VS,(i allready have the 780 but can change it) 1' 7/8 headers, b&m holeshot 2400 converter.
Car will be mostly street use, weekends only.
I want highway gears but I would like to fit a gearvendors and 3.91's as money will allow at a later stage.
Any comments would be apreciated, thanks.

Generally, what you have is fine.
The 850 is fine.
Don't cheese on the rockers and converter. I think a little more stall - Call ATI or Dynamic or other quality converter maker

[justcruisin]

Ok Ill check out the converter a little more, the rockers I am looking at are the stainless version, very similar to the comp ones but they have bushings in them, the C.A.T. and  K.M.J. all look the same, any experience with these?

[green69rt]

I'm really interested in your engine choices.  Question...you say this is a street engine so I will ask a couple of questions..

What about street idle?  I don't know what the can specs are, but a big cam can have a big lope and a big downside on stoplight idle.  What's the consequences here?

Second - what about vacuum?  Again this relates to street idle and also can effect the brake booster (if you have vacuum assist) and the headlight doors.

Are these issues not a problem or have you decided to live with them or fix them some other way?

I think I also will go with the rollers and the better rods, etc just because I want to increase the reliability of my engine.

[justcruisin]

I have considered the idle and vacume, and to be honest I have been recomended to go with a smaller cam but its tempting to go with the bigger cam. Not sure on how this will effect my vacume, this is why I have posted to get a experienced opinion. The only thing I have to consider is assisted brakes. The cam I had before was a crane blazer 288, it was a real dog with the low compresion and didn't offer a lot of vacume at idle and the brakes were marginal. I did the sums and the dynamic comp was in the 6:1 range. I am prepaired to fit a vacume tank if nessasary.

[justcruisin]

Cam specs are 276/284
                     234/242@.050"
                     .513/.533
                     110/106LSA/ICL

[firefighter3931]

For rocker arms a set of ductile iron adjustables would be fine. With those heads and that cam i'd look at an 850 cfm Holley. A Dynamic 10in street/strip converter would be a good match for that cam and the overall package. 


Ron