mitmaks

306 mexican shortblock with forged rods and pistons (9to1), moly rings, steel main girdle all ARP hardware, fluidampner, double roller t-chain with TFS stage 2 cam, moroso 1 piece pushrods, TFS 1.7 roller rockers, TFS R heads box stock, TFS R intake box stock, TFS phenolic spacer, TFS 75mm t-body elbow, bbk 75mm t-body, zex nos 75mm plate dual shark nozzles, bullet 75mm blowthrough mass air with 42ib injectors, 255 in tank with a 255 frame mounted fuel pumps aeromotive regulator, procharger D1 with 3.5 inch pulley and 3 core intercooler, k&n big conical, hooker super comp TFS R headers, 3 inch exhaust with cats, x-pipe and dynomax bullet mufflers. msd 6btm box, msd super conducter wires and coil, 3.55 gears auburn posi, subframe connectors, saleen springs, steeda caster/camber plates, koni shocks

What can be improved in my combo? I was particularly thinking about porting heads, would it be worth it with my combo, what power increases am I looking at? Anything else...

1991LX5.0

Your probably going to need bigger than 42lb injectors

mitmaks

any recommendations? It is not running lean as far as I know

92BOOSTED

The one thing i would change is your camshaft. If i were you i would get a custom cam made for the setup you have because the the stage 2 cam is not that blower friendly, it will work but not as good as an actual blower grind.(big difference.) What head gaskets are you going to use? Cometics work really well here.
If you have not upgraded your fuel lines yet this is the time.Dont forget the fuel rail.
You could make some very serious power here with what you have.

Ryan

mitmaks

This is already installed in my cobra and runs well. I was just thinking maybe heads need some port work, not sure how responsive they are but I can get some heads for my 440 Charger and they claim 50hp bolt-on, right out of the box...I'm not even talking how much more you can unleash with some porting by a professional.

uedlose

I am with the above sounds like the injectors may be a bit small are you still running the stock fuel lines? how much boost are you making? TFS -R heads are good flowing heads out of the box with only 306CID I would think they are more then enough. wind the boost up and get that thing to hook and low 10 or maybe more should be in it.

mitmaks

Im running 16psi right now, running on 92/race gas 50/50 mix. I was advised to run more race gas than that though. Fuel rail is upgraded, I can make pics if needed. How hard would it be to swap injectors, what size/brand do you recommend...

1991LX5.0

https://mustangforums.com/m_1111917/tm.htm
from this it looks like 42LB injectors will support about 500-550 to the wheels and from what i can see your most likely going to max them out

uedlose

OK, the rails are upgrade but what about the lines from the tank to the rails. injector swap is not that hard I would be looking into some 60s Delphi make nice stuff. A tuner for this thing would help a lot if you start moving up much more with the injectors. if you still got the stock fuel line you are gone to need to replace them with big stuff.you dont want to get that thing lean.

mitmaks

what are you guy's estimation as to what time it should run in 1/4?