[gdonovan]

Have the blower, what mods would you do to the engine and why?

I'm thinking about a set of Eddie heads with good gaskets and a blower grind cam from bullet cams.

Don't worry about electronics, I got that covered.

 

[01dakotaqc]

what other mods do you have? i would start with the basics like exhaust, intake manifold, throttle body etc. then once you have that you can worry about heads/cam.

 

[meangreen]

Have the blower, what mods would you do to the engine and why?

I'm thinking about a set of Eddie heads with good gaskets and a blower grind cam from bullet cams.

Don't worry about electronics, I got that covered.

So I have a 5.2, eddie heads 212/214 .510/.510 114lsa cam, and I had a vortech and now I have novi 2000 that I am throwing on. I blew my stock head gaskets ... my heads were lifting bad.

I would get arp head and good gaskets studs firstly.

When I dropped my heads off at my machine shop (http://jmsracing.com/), i asked for a full P&P job. They talked me out of it.... $1000 loss for them. They said that I would be better suited with just some minor porting on my heads and intake and port matching. They said the best bang for the buck would be to get low cr forged pistons and big exhaust. Mind you this is on a street driver/parts hauler that won't see much track time. According to them, fully porting heads on a mildly cammed supercharged street car isn't cost effective...

 

[gdonovan]

what other mods do you have? i would start with the basics like exhaust, intake manifold, throttle body etc. then once you have that you can worry about heads/cam.

Exhaust is covered, intake is covered, TB is covered (LT1)

Just need to discuss what you would do to the longblock (pistons / rods / crank)

This isn't in a Durango / Dakota /Ram but an old school car ;-)

Oh, and will be running air to water intercooler.

 

[gdonovan]

So I have a 5.2, eddie heads 212/214 .510/.510 114lsa cam, and I had a vortech and now I have novi 2000 that I am throwing on. I blew my stock head gaskets ... my heads were lifting bad.

I would get arp head and good gaskets studs firstly.

At what power level or ET were you running into this problem? Where does your combo make peak power and with what intake?

 

[sick 660r]

shortblock:
-390ci
-shortfill
-billet mains or girdle
-forged crank
-h beam rods
-forged pistons (low 9's:1 compression)

top end
-ported eddys
-ported 4bbl m1
-4bbl TB
-1.6 rr
-nice big cam (call a cam company and tell them your setup and goal) dont buy an off the shelf cam
-cometic gaskets
-ARP head studs

supercharger:
-4" intake pipe
-9" filter
-reichard racing pulley
-custom tensioner setup cause you will need it

Exhaust:
-1 7/8 spintechs
-dual 3" exhaust

Have fun lol

 

[TurboBlew]

nawzzzzzzzzz

 

[gdonovan]

shortblock:
-390ci

<snip>

I'm running a 5.2, have no interest in a stroker hence the post "5.2 with a Novi 1200"

 

[sick 660r]

<snip>

I'm running a 5.2, have no interest in a stroker hence the post "5.2 with a Novi 1200"

you asked what to do with the crank rods and pistons. If youre building a short block then why not go bigger? Its not much more money.

 

[gdonovan]

you asked what to do with the crank rods and pistons. If youre building a short block then why not go bigger? Its not much more money.

Its staying a 5.2

How long/power level will stock rods last?

 

[KTK00R/T]

Its staying a 5.2

How long/power level will stock rods last?

its all dependant on you... beating on it? not long.. lots of boost + beating on it? shorter..

 

[meangreen]

At what power level or ET were you running into this problem? Where does your combo make peak power and with what intake?

Don't know the power level or ET. I estimated 380rwhp, but who knows. Everything was fine until I hit 10-12psi.

NA I only put down 240rwhp ... so I am a hack mechanic, and that was with a 2bbl M1 and tiny 50mm TB, and tune with way too much timing...

 

[meangreen]

you asked what to do with the crank rods and pistons. If youre building a short block then why not go bigger? Its not much more money.

But how much power do you need? A properly set up blown 5.2 should put out more power than the block can handle anyway. Plus his novi 1200 might have some issue feeding a 390.... just my opinion, worth exactly what you paid for it.

I wold get an 9:1 piston, scat sir rods and arp2000 bolts, and a cast crank new or an old school forged 5140 crank from a 273 or 318

 

[gdonovan]

But how much power do you need?

Don't have a real number or goal to put my finger on yet, I'm leaning toward "more reliable" than running on the ragged edge.

For the sake of argument lets say 500 RWHP since this is a doable goal for the Novi 1200 & magnum block. RWD, a manual trans and no emissions make this a reasonable hp goal I think.

I have done turbos for years, had a few cars with Nitrous and now wanted to play with a supercharger.

Plus his novi 1200 might have some issue feeding a 390.... just my opinion, worth exactly what you paid for it.

Exactly, spot on!

I picked up the setup dirt cheap with 150 miles on it because it would not feed the prior owners 410 with ported eddie heads and huge roller cam.

Peak boost with a 3.33 pulley was only 4 psi, he's upgrading to a V-24

I have a 5.2 magnum engine, considered running the iron heads but work with turbos has taught me that aluminum will give you a bit more wiggle room in reducing detonation.. running a good intercooler might make this a non-issue but I'd like to hear back from folks running iron heads first.

I have an old school 273 forged steel crank i'm considering using but have so far not given it much thought as I have not seen too many folks break a cast mopar crank! My own 2.5 motor with a cast crank makes over 3 hp per cubic inch.

Question- I have seen studs advocated, why not good ARP bolts instead?

The felpro gaskets seem to be a good choice aside from Cometics.

I guess it really boils down to the choice in rods and pistons. If one keeps detonation at bay, how long with the stock rod and piston hold up?

I'm looking into the old school 318 forged slugs, have to check the cc' of the LA small chamber heads vs the advertised 58 cc of the eddies.

 

[sick 660r]

I missed novi 1200. Thought we were talking about the 2000

 

[meangreen]

For the sake of argument lets say 500 RWHP since this is a doable goal for the Novi 1200 & magnum block. RWD, a manual trans and no emissions make this a reasonable hp goal I think.


Question- I have seen studs advocated, why not good ARP bolts instead?

The felpro gaskets seem to be a good choice aside from Cometics.

I guess it really boils down to the choice in rods and pistons. If one keeps detonation at bay, how long with the stock rod and piston hold up?

I'm looking into the old school 318 forged slugs, have to check the cc' of

the LA small chamber heads vs the advertised 58 cc of the eddies.

The guy I bought my vortech from put down 514rwhp on his 5spd 318 ... ported stock heads 220ish cam and 16 psi.

Eddie heads are not 58cc as advertised, according to some. I think that they usually cc out to 63cc or more. If you go that route, check the springs and valve guides. My machine shop said that the eddie springs were crap on my heads after around 20k miles ... I think 250# open pressure:huh:

My heads were lifting with ARP bolts. Probably a result of my learning how to tune on this setup, but regardless I am getting studs when I put her back together... I am going with felpro 1008s for now, but will go cometics after I freshen up the bottom end and can get the block surfaced correctly...

 

[gdonovan]

The guy I bought my vortech from put down 514rwhp on his 5spd 318 ... ported stock heads 220ish cam and 16 psi.

I suspect my HP goal was possible with iron heads considering that I had a 340 that belted out 380 whp back in the 80's with ported X heads.

Eddie heads are not 58cc as advertised, according to some. I think that they usually cc out to 63cc or more..

Yes, thats why I used the "advertised" disclaimer. What they say they are and what you actually get can vary ;-)

My heads were lifting with ARP bolts. Probably a result of my learning how to tune on this setup, but regardless I am getting studs when I put her back together... I am going with felpro 1008s for now, but will go cometics after I freshen up the bottom end and can get the block surfaced correctly...

I'm surprised really- The 2.2 engines make due with an 11 mm headbolt and they are known for handling 30+ psi for long periods of time.

 

[gdonovan]

I think a realistic goal for the car is deep in the 11's, with a 3400-3500 lb race weight, 500hp would put me at 11.1 with a trap speed of 122 mph.

 

[gdonovan]

Thread from the dead!

Had to set aside the project discussed here as I had to build a new garage, buy a '71 Plymouth SSP, refurbish the old workshop, sell two cars, get my old GTX back on the road and buy a new Challenger.

In 2-3 weeks this project will be moving forward. Here is the current parts list.

5.2 factory short block rebuilt with windage tray.
Indy iron heads with 2.02 valves
MP 2 or 4bbl intake with KRC fuel rails 52 pph injectors.
Fastman .512/.515 lift cam with 211/217 duration
1.7 non-adjustable H.S. magnum roller rockers or Crane 1.6 adjustable roller rockers with guide plates.
Dougs 1 5/8" headers.
Novi 1200

Electronics is going to be MS2 or MS3, will cross that bridge when I get there. Was considering a MS2 system triggered with a locked out distributor and batch firing but might just step up to MS3 with crank trigger.

Thinking about ARP headbolts as insurance even though I really don't plan on pushing the motor to the ragged edge. Car will be air to water intercooled.

No real performance goal for the car in retrospect, just a fun street car and my first foray into supercharging. I have LOTS of experience with turbos and wanted to do something different.