451Mopar
Well-Known Member
Stealth 4500. The other TBI units are pretty low on CFM rating, I think around 800 cfm.
Which Holley EFI?
- Thread starter 1967coronet440
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1967coronet440
Well-Known Member
Ya I noticed that too, before I decided on EFI I planned on running a dominator carb.
451Mopar
Well-Known Member
My 400/500 stroker, Ported MW Victors, 272/278@ 0.050", 0.720" lift. I put the FiTech 1200 PA on the engine because I had it for another project and it works well, but I think the smaller 4150 (800+? CFM) may be limiting peak power. On the other hand, very streetable and great throttle response.
1967coronet440
Well-Known Member
Currently have the fitech 1200 but I’m going to go with the Holley unit. Fitech is for sale you know anyone interested. What kind of power does that engine make?
451Mopar
Well-Known Member
I never dynoed the engine, it is 12.4:1 compression. The heads are the Hughes CNC version, nearly 400 cfm. Only running a Indy 4150 intake. I think power is limited by the size of the FiTech throttle body. I would guess 700+?
1967coronet440
Well-Known Member
That’s what I’m guessing with mine, around 700-750 after I port the heads. Your cam is a bit bigger than mine though
263/[email protected]
650/651 lift
108lsa
1967coronet440
Well-Known Member
How much was the Hughes port job?
Don't want to burst anybody's bubble but throwing around guestimated horsepower numbers for an engine based on someone else's dyno numbers can be good for bench racing but not so good for fact.
There are so many variables involved from one engine to another, even using the same brand of parts, that huge differences in performance can occur. Making an ACTUAL 700-800 horsepower with a naturally aspirated (no blower/turbo) engine on a car driven on the street makes that car a nightmare to drive, even occasionally. Of course, it is the choice of the owner as to how much you can put up with, but I, for one, would much rather hear "I don't know the numbers because this engine hasn't been on a dyno." verses, it should make blah, blah, blah, because one "just like it" made blah, blah, blah...
Just my opinion. Yours may vary...
There are so many variables involved from one engine to another, even using the same brand of parts, that huge differences in performance can occur. Making an ACTUAL 700-800 horsepower with a naturally aspirated (no blower/turbo) engine on a car driven on the street makes that car a nightmare to drive, even occasionally. Of course, it is the choice of the owner as to how much you can put up with, but I, for one, would much rather hear "I don't know the numbers because this engine hasn't been on a dyno." verses, it should make blah, blah, blah, because one "just like it" made blah, blah, blah...
Just my opinion. Yours may vary...
451Mopar
Well-Known Member
From their web site: $1547.60
http://www.hughesengines.com/Index/...IFZpY3RvciBNYXggV2VkZ2UgUG9ydA==&partid=27687
I bought the heads from them with the porting a few years ago when they had a Christmas Sale.
http://www.hughesengines.com/Index/...IFZpY3RvciBNYXggV2VkZ2UgUG9ydA==&partid=27691
Then milled off rocker stands, installed 3/4" deep Time-Sert stainless inserts and used Aluminum MW style Rocker stands with ARP hold down bolts. These too were milled to set rocker geometry height.
https://angeluccimfg.com/products/mopar-max-wedge-rocker-stands
To get 2" valve spring height for PAC-1326 valve springs, used PAC valve spring seats that were milled to 0.030" thick vs the standard 0.060" thick, and used higher install height retainers. I think from PAC also, but not sure of the part number?
I used the T&D 1.6:1 ratio rockers arms with 0.725" offset intake. They now have paired shaft rockers that look like a better option?
The cam is a Custom Comp HXL lobe profile:
1967coronet440
Well-Known Member
Thanks, that’s seems like a lot for a port job. My heads are assembled already with ferrea valves also have the t&d 1.6 rockers but didn’t have them ported and since the car isn’t going to be ready this year I figured I’d send them out over the winter and have it done. I’m going to give them a call since they’re only about 2 hours from me I could just drop them off and save some coin on shipping.
The learning part of the Terminator is doing what it should. I have the learning set to 110%, so what’s its doing is taking out fuel really fast across the rpm while taking into account the tps, water temp and injector duty cycle.
I put about 50 miles on it today in cotton country and it was popping n’ spitting holding a steady 3k, just giving more throttle in 4th and letting off was helping some. I will say that in 4th, no need to down shift to pass, it’s an animal!
My buddy is gonna stop by later this week and look at the fuel tables, adjust from there and then I’ll go drive it again. Up to this point, it’s been around the neighborhood scary old ladies and children. Was nice to get out and really open it up.
I put about 50 miles on it today in cotton country and it was popping n’ spitting holding a steady 3k, just giving more throttle in 4th and letting off was helping some. I will say that in 4th, no need to down shift to pass, it’s an animal!
My buddy is gonna stop by later this week and look at the fuel tables, adjust from there and then I’ll go drive it again. Up to this point, it’s been around the neighborhood scary old ladies and children. Was nice to get out and really open it up.
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