Engine guru's/ fuel injectors
#1
Registered
Thread Starter
![Default](/forums/images/icons/icon1.gif)
I am freshening and upgrading a bit. I have a 454 Mag 60 over, 7lb boost ProCharged M3 SC, Merc ignition, and the following additional. Edelbrock aluminum heads #61559 2.50 intake 1.90 exhaust, long runners are 320 short are 310, 118 CC, compression is 10:1. Cam is 236/238 @ 50 112 LC lift is 595 total custom grind with 1.8 rockers full hydraulic roller. I am currently running 50lb injectors. Will these work or should I go with 60lb injectors.
EMI Thunder exhaust. any thing besides the the reflash and possible injector change am I'm missing anything.
Bob
EMI Thunder exhaust. any thing besides the the reflash and possible injector change am I'm missing anything.
Bob
#3
Charter Member #601
![](https://www.offshoreonly.com/forums/images/icons/charter_member_star.gif)
![Default](/forums/images/icons/icon1.gif)
Do you have any idea what horse power was before making the improvments? And what about % of duty cylce on the old setup? What is the fuel PSI?
If you dont have a way of looking at duty cycle, then hp and psi #'s will help.
If you dont have a way of looking at duty cycle, then hp and psi #'s will help.
#4
Registered
![Default](/forums/images/icons/icon1.gif)
I am freshening and upgrading a bit. I have a 454 Mag 60 over, 7lb boost ProCharged M3 SC, Merc ignition, and the following additional. Edelbrock aluminum heads #61559 2.50 intake 1.90 exhaust, long runners are 320 short are 310, 118 CC, compression is 10:1. Cam is 236/238 @ 50 112 LC lift is 595 total custom grind with 1.8 rockers full hydraulic roller. I am currently running 50lb injectors. Will these work or should I go with 60lb injectors.
EMI Thunder exhaust. any thing besides the the reflash and possible injector change am I'm missing anything.
Bob
EMI Thunder exhaust. any thing besides the the reflash and possible injector change am I'm missing anything.
Bob
Better get lots of fuel to it for sure.....
Bryan
#6
Registered
Join Date: Mar 2008
Location: League City, Texas
Posts: 466
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
That is surely a misprint... 2.5 intake valve on a 320 head? Highly doubt that.... the valves wouldn't clear the bore on a 454.
I think 10:1 with that much boost is gonna be really pushing it with 7 lbs on pump gas. Watch closely for detonation!!!
I think GPM has a pretty good baseline.
I think 10:1 with that much boost is gonna be really pushing it with 7 lbs on pump gas. Watch closely for detonation!!!
I think GPM has a pretty good baseline.
Last edited by niceguy; 03-14-2008 at 06:30 PM. Reason: forgot something
#7
Registered
Thread Starter
![Default](/forums/images/icons/icon1.gif)
Bob
#8
Registered
Thread Starter
![Default](/forums/images/icons/icon1.gif)
That is surely a misprint... 2.5 intake valve on a 320 head? Highly doubt that.... the valves wouldn't clear the bore on a 454.
I think 10:1 with that much boost is gonna be really pushing it with 7 lbs on pump gas. Watch closely for detonation!!!
I think GPM has a pretty good baseline.
I think 10:1 with that much boost is gonna be really pushing it with 7 lbs on pump gas. Watch closely for detonation!!!
I think GPM has a pretty good baseline.
Edelbrock 61559 - Edelbrock BB-Chevy Performer RPM Aluminum Cylinder Heads
BB-Chevy Performer RPM 454-R Marine Aluminum Cylinder Head
315cc/300cc (Long/Short) Rectangle Ports
118cc Comb. Chambers
2.250''/1.890'' Valves
7/16'' Rocker Studs
Sold Individually
They have been ported significanlt to the 320 -310 runner. Every thing else is correct.