This is topic changes to my combo in forum Tech Talk at Northern California Ford Owners .
To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=004148
Posted by 92coupe (Member # 1957) on
:
ok well i have a 302ci honed and new forged pistons, x-cam, TFS R heads, hooker long tubes, x-pipe, 1.7 rr. well this is what im gonna do instead of NA.
swap the x-cam for a AFM blower cam
36# or 30# injectors matching MAF
gt-40 lower intake
box style upper
s-trim or larger blower
oh yea i have 9.5:1 CR
well what do you think? im hoping for 400+ rear wheel horse power. do you think its possible?
Posted by 1SLOWLX (Member # 558) on
:
you should raise the compression a little to about 10.5 to one. Ditch the R heads and get some AFR 185 or TFS ported ones, a custom cam and you won't need the S-trim to make the power.
Albert
Posted by 92coupe (Member # 1957) on
:
no thanks, ima keep the r heads because they flow really well. and i couldnt see getting AFR's, to much money for something not that great. and the blower cam is a custom cam made by AFM. thanks for the input though.
Posted by st5150 (Member # 51) on
:
If you haven't gotten the AFM cam yet, give them a call and ask them about your combo. It will make over 400 rwhp in its sleep! Three thing AFM knows are cams, TFS heads and Vortech blowers ![[patriot]](graemlins/patriot.gif)
Posted by Red97SVT (Member # 2811) on
:
The R heads may be a bit of over kill and actually flow too much and hurt throttle response because it will be hard to get any velocity to fill your cylinder efficiently until your way up in the rpm range. Unfortunately your limited on rpms by your reletively stock bottom end and possibly your valve train (don't know specifics).
The 185s are probably cheaper than an S trim and you'll have the added kudos of making 400 N/A.
Your R's are race heads and don't really match your combo. Bigger isn't always better, its all in how you use it ![[Big Grin]](biggrin.gif)
Just my $.02.
Posted by st5150 (Member # 51) on
:
He already has the R heads and AFR heads as magical as people on the internet make them out to be will not make 400 rwhp NA on his stock bottem end 302 with an equally magical cam. The blower will "make up" for much of the deficiency the big heads have on this combo and give him his goal of 400+ rwhp, while being a little bit soft at lower RPM's. Nothing a set of 4.10's can't fix though
[ May 18, 2003, 12:43 AM: Message edited by: st5150 ]
Posted by jayl (Member # 185) on
:
if you wanna ditch those crappy overrated tfs r's you just let me know
Posted by Red97SVT (Member # 2811) on
:
quote:
He already has the R heads and AFR heads as magical as people on the internet make them out to be will not make 400 rwhp NA on his stock bottem end 302 with an equally magical cam. The blower will "make up" for much of the deficiency the big heads have on this combo and give him his goal of 400+ rwhp, while being a little bit soft
Ok,ok. I give.
I was just trying to point out that the R's are a bit of over kill. Well matched parts will make better power than mismatched parts. Its the whole combo that needs to be considered.
Maybe I'm just bored and want to say something... ![[Smile]](smile.gif)
Posted by st5150 (Member # 51) on
:
Its okay, this same topic was discussed a few days ago and it got pretty heated. The guy just wants to work with what he has, and not build some "ideal combo".
Posted by Red97SVT (Member # 2811) on
:
Everyone here has an opinion. Thats why this board is so much fun!
Posted by mustanggt5091 (Member # 444) on
:
Should make respectable power no matter what heads, AFR or TFS! Everyone needs to calm down with this pointless argument! I've seen very powerful AFR combo's and very powerful TFS combo's! Both make great numbers, one maybe a little more than the other! One also costs alot more than the other! Good luck man! Post the dyno numbers when you get them!
Posted by LAST302 (Member # 808) on
:
School me or something because I have always thought and have built my blower motor to have lower compression. Why the 9:5:1 and someone else saying to raise it. I was always under the impression that a supercharged motor loved low compression, say 8:5:1 like mine is.
Posted by 1990GT50 (Member # 2119) on
:
he said raise it and go n/a
compression should be low on a blown motor
Posted by 92coupe (Member # 1957) on
:
well the compression ratio is the only thing holding me back from a HUGE blower. like soemone already said i want to work with what i have. i will NOT ditch the R heads. i picked them up for an amazing price, and i forgot to say hat they are o-ringed. and the velocity the heads MIGHT lack will be made up by the blower forcing it in. what size injectors should i get? would 30# and a 255lph pump be enough. im not looking for just gonna work, i want it safe! id rather step up injectors and have an adj. fuel regulater dyno tuned.
Posted by The Rick (Member # 327) on
:
um, i'm no expert but I know the 30'lbs injectors should be no way big enough.
Most guys with blowers/motor work run 42lbs+ injectors.
Posted by mustanggt5091 (Member # 444) on
:
how much boost?
Posted by 92coupe (Member # 1957) on
:
around 10psi
Posted by 66 AC COBRA (Member # 904) on
:
42's are the minimun u can run and it doesnt really matter because ur block is gonna crack anyway, unless somethin else is gonna go first, good luck though
Posted by 98slowhoe (Member # 895) on
:
42's are the right size. I wouldn't worry too much about the block Craking. With what you have you will be well set-up to meet your goal of 400+. Get it tuned and it will run like a champ. Just think of the blower as a band aid for not having the "ideal" set up. Boost is a wonderful thing, and I will know its powers in a month or so.
[ May 19, 2003, 06:37 PM: Message edited by: 98slowhoe ]
Posted by 92coupe (Member # 1957) on
:
the block is the only thing im worried about. shit if it brakes ill make a blown 331, or 351w. i dont give a shit as long as it make the 400+ to the wheels. im probably going to be selling the car shortly after.
Posted by 66 AC COBRA (Member # 904) on
:
i think a stock block will crack at around 500rwhp, or so i have heard from a few people, but then again some may crack way earlier or a way later
and if u are not over 400 to the wheels with that combo something is really wrong
Posted by mustanggt5091 (Member # 444) on
:
You should be fine! I would also recommend the 42's
Posted by 420racerx (Member # 2838) on
:
check out my car in the album guys
Posted by 66 AC COBRA (Member # 904) on
:
if u really want us to see ur car just post a pic of it ![[dance]](graemlins/dance.gif)
Posted by 92coupe (Member # 1957) on
:
quote:
Originally posted by 420racerx:
check out my car in the album guys
dont see how your car had anything to do with my combo?
Posted by 66 AC COBRA (Member # 904) on
:
he is new to the site and wants people to look at his car, hes another moron that will become another useless contributor
he could have just made a new thread, so he didnt contaminate others
Posted by mustanggt5091 (Member # 444) on
:
Damn thread hijackers ![[BS flag]](graemlins/bs_flag.gif)
Posted by 92coupe (Member # 1957) on
:
so yea anyways, i think ima run the b-21 cam. with a s-trim, what doyou guys think about that cam?
Fueled by Ford Mustang Owners
on CaliforniaFords.com