Author Topic: 428 Cj project advise  (Read 2495 times)

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Galaxie352

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428 Cj project advise
« on: March 10, 2016, 11:36:17 AM »
Hi guys.

I have finally desided to order parts for my 428 cj block. I am looking for som advise since this is my first "Performence" build. I hoping to get 500-700Hp out off it. Now, i am about to order a stroker kit. I was thinking about the scat 462 cid kit with cast crank and flat pistons. The car would be a street car, but i am not afraid that it will slide over to street/drag. I guess we are looking at 11.4-11.7 comp ratio if i go with heads that have 72 ore 76cc ? Maybe i should select dish pistons and get a lower ratio ? But from here, i am not shure what parts to go with. (Heads,intake and cam selection). Oh,inn norway, we have 98 pump gas =)
Robin
Norway
-65 Galaxie 352
-55 Crown victoria 272 yblock

c6rod

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Re: 428 Cj project advise
« Reply #1 on: March 11, 2016, 12:08:24 PM »
Have a stroked 428 built by a professional. It has a 4 1/4" stroker, 0.010 overbore for a total around 462 cubic inches. Mildly ported quality aftermarket aluminum heads and a somewhat mild roller hydraulic cam (232/240 @0.050 with .585/.615 lift)  and 10.2 to one compression ratio. Induction is  FAST EZ-EFI 1000 CFM throttle body and 8, 38 LBS injectors. Dynoed out of the box, with no tuning or break in, at 534 HP at 5900 RPM and 560 Lb/Ft.
I wish we had 98 octane in states. I would be running 11 or 11 1/2 compression and a slightly bigger cam without fear of problems. Seen many FE with this combo at around 600 or more HP. Good luck and have fun.
BTW, what is the per gallon or liter cost of the 98 in Norway?

c6rod

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Re: 428 Cj project advise
« Reply #2 on: March 11, 2016, 12:17:41 PM »
Forgot to add that intake is an Edelbrock Victor and heads are Edelbrock units with 2.19/1.92 valves. Cam is on 112 centers. Correction, bore is 0.030 overbore not 0.010.

Galaxie352

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Re: 428 Cj project advise
« Reply #3 on: March 13, 2016, 01:28:32 PM »
Thanks for the reply. 10.2 ? Dished pistons i assume. How does the efi work out on these engine ? After looking at some comp cams it looks to me that you can run roller on lower compression ratio ? The 308R (solid roller) 10.5. The 306S (solid) 11.5. The 305H (hydraulic) 10.5 upp. Not shure yet to go with a roller. It will coat some extra money. The 98 octan is pretty expensive. I think it is 15-16 nok. And that will be each 0.9 gallone ( 1 liter ). Nice too see some numbers on other builds.
Robin
Norway
-65 Galaxie 352
-55 Crown victoria 272 yblock

c6rod

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Re: 428 Cj project advise
« Reply #4 on: March 14, 2016, 01:25:32 PM »
If you are willing to go with a solid lifter cam with big numbers of duration and lift you will need huge amounts of valve spring pressure. This is tough on rocker system and will only make it not street friendly by hurting low and mid range HP and Torque. Depends on what you want to do with it when done.