[R0B0T]

specifically looking for advice from 2 people...

i'm sure they know who they are, but if you're experienced feel free to voice your opinion.

cars setup now

stock longblock, tremec 3550 tranny, (open headers on spray), 4.30 gears, hot air intake
on motor the car ran a 12.8 at 103 and on spray it runs 11.83 at 113.98, way over geared for the nitrous...
car weighed 2677 last time i weighed it...
i weigh 160...

now, parts i have/am installing/have installed but haven't been to the track with yet

cold air intake, electric fan, tubular k member/a arms/coil over kit/caster camber plates/manual rack

explorer intake (can have lower ported if beneficial), gt40 (non p) heads and 1.6 roller rockers (i will measure the cc's of the combustion chamber and have them milled if compression will drop, they may already be milled, i'm waiting on my buddy to give me the heads and rockers), 70mm throttle body, i have a set of 24 and 19 lb injectors, unsure which MAF i should order (for which size injectors)

will order 3" exhaust so i don't have to buy new exhaust twice, bigger motor coming in the future...

i would like to run 11.90 n/a and try to run 10.90 on up to a 200 shot...
however i'm not sure what unported gt40 heads are capable of...
i don't know what kind of rpm's choke them up... i'm guessing they'll be done around 5800 rpm's at most?


now i'm trying to figure out what cam would be best with this combination...
this is where i want experienced help, not guesses.
i don't have the money for a custom cam, i will have $700 at most in this engine when i'm done... that includes the cam/MAF/intake/heads/rockers.

i was looking at the anderson n41 cam, here is the cam card



trickflow 51402000 cam, here is a link, can't find a card
Trick Flow Specialties TFS-51402000 - Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L – SummitRacing.com

or the comp cams NX264HR-14 cam
here is the card
COMP Cams® - Cam Details


i know that all 3 of these cams are distinctly different, i'm open to suggestions, i'm just not experienced when it comes to choosing cams. i'm unsure how much the 110,112,and 114 LSA will effect the car, on motor and on spray... looking for some guidance, and whether my goals are easily attainable, or difficult to obtain...
i'm also willing to change the gear in the rear...

if you think this is attainable with the stock cam, then i'll keep the stock cam...

[R0B0T]

darrell, 93mustank, where ya'll at???

even if you can't recommend a cam, sharing any knowledge you have about them would be beneficial.

[baine21225]

well obviously a custom grind would be ideal

[R0B0T]

Originally Posted by baine21225 well obviously a custom grind would be ideal

well no kidding.
but i'm keeping this as cheap as possible.

[1slo5.0]

Originally Posted by R0B0T specifically looking for advice from 2 people... i'm sure they know who they are, but if you're experienced feel free to voice your opinion. cars setup now stock longblock, tremec 3550 tranny, (open headers on spray), 4.30 gears, hot air intake on motor the car ran a 12.8 at 103 and on spray it runs 11.83 at 113.98, way over geared for the nitrous... car weighed 2677 last time i weighed it... i weigh 160... now, parts i have/am installing/have installed but haven't been to the track with yet cold air intake, electric fan, tubular k member/a arms/coil over kit/caster camber plates/manual rack explorer intake (can have lower ported if beneficial), gt40 (non p) heads and 1.6 roller rockers (i will measure the cc's of the combustion chamber and have them milled if compression will drop, they may already be milled, i'm waiting on my buddy to give me the heads and rockers), 70mm throttle body, i have a set of 24 and 19 lb injectors, unsure which MAF i should order (for which size injectors) will order 3" exhaust so i don't have to buy new exhaust twice, bigger motor coming in the future... i would like to run 11.90 n/a and try to run 10.90 on up to a 200 shot... however i'm not sure what unported gt40 heads are capable of... i don't know what kind of rpm's choke them up... i'm guessing they'll be done around 5800 rpm's at most? now i'm trying to figure out what cam would be best with this combination... this is where i want experienced help, not guesses. i don't have the money for a custom cam, i will have $700 at most in this engine when i'm done... that includes the cam/MAF/intake/heads/rockers. i was looking at the anderson n41 cam, here is the cam card trickflow 51402000 cam, here is a link, can't find a card Trick Flow Specialties TFS-51402000 - Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L – SummitRacing.com or the comp cams NX264HR-14 cam here is the card COMP Cams® - Cam Details i know that all 3 of these cams are distinctly different, i'm open to suggestions, i'm just not experienced when it comes to choosing cams. i'm unsure how much the 110,112,and 114 LSA will effect the car, on motor and on spray... looking for some guidance, and whether my goals are easily attainable, or difficult to obtain... i'm also willing to change the gear in the rear... if you think this is attainable with the stock cam, then i'll keep the stock cam...

I'd run a stock speed density cam with 1.7 rockers. You need to focus on nitrous performance or n/a performance, not both. An all motor set up is going to have gearing that is to deep for nitrous and a nitrous set up is going to have gearing too tight for n/a performance. There is no best of both worlds.

Make sure the heads are 60 cc chambers. If the heads came off of a Mountaineer or Explorer then they will need to be milled because they have larger chambers.

[1slo5.0]

Make sure you put a new set of springs on whether you use a stock cam or any other cam.

[R0B0T]

Originally Posted by 1slo5.0 Make sure you put a new set of springs on whether you use a stock cam or any other cam.

yes i will put springs on it.

the whole gearing for n/a vs nitrous thing, i was going to attempt to run an 11.90 with the 4.30 gears i already have, then slap the right set of gears in for the nitrous goal.

i almost always run the car with nitrous, so i'm more focused on the nitrous goal, but i think 11.90 and 10.90 is reasonable enough to achieve both, but im not sure which is why i'm hoping to find someone that has done both.

the car currently has a speed density cam in it (88), i just thought the longer duration/higher lift cam will benefit the crappy gt40 heads.

is this wrong, or do you just think the goals i have can be attained with the stock cam???

[JBIGBOOTSY]

Originally Posted by 1slo5.0 I'd run a stock speed density cam with 1.7 rockers. You need to focus on nitrous performance or n/a performance, not both. An all motor set up is going to have gearing that is to deep for nitrous and a nitrous set up is going to have gearing too tight for n/a performance. There is no best of both worlds. Make sure the heads are 60 cc chambers. If the heads came off of a Mountaineer or Explorer then they will need to be milled because they have larger chambers.

Thats where one set of 26" and one set of 28" slicks come in handy.

[R0B0T]

Originally Posted by JBIGBOOTSY Thats where one set of 26" and one set of 28" slicks come in handy.

a 2" increase in diameter of a tire only equates to a .2 loss in final drive gearing. at a 10mph gain on nitrous i need a .4 loss in final drive gearing to cross the traps at the ideal RPM.

[JBIGBOOTSY]

with a 26" your mph is 113 at the 6250 rpm fuel cut off, with a 28" its 121.

Youll either need more RPM or a numerically lower gear ratio.

[R0B0T]

i know how to do math and i know how to pick gears and tires. all i'm looking for is cam help.

[superbean]

go to corral and search jay allen and ed curtis. You will like what you see !

If I ever get around to my turbo setup they will be called upon for my cam setup

[1slo5.0]

Originally Posted by R0B0T yes i will put springs on it. the whole gearing for n/a vs nitrous thing, i was going to attempt to run an 11.90 with the 4.30 gears i already have, then slap the right set of gears in for the nitrous goal. i almost always run the car with nitrous, so i'm more focused on the nitrous goal, but i think 11.90 and 10.90 is reasonable enough to achieve both, but im not sure which is why i'm hoping to find someone that has done both. the car currently has a speed density cam in it (88), i just thought the longer duration/higher lift cam will benefit the crappy gt40 heads. is this wrong, or do you just think the goals i have can be attained with the stock cam???

I'd run the speed density cam or a custom cam. If nothing else you can pay Jay Allen for some consulting time and he can pick you the best off the shelf cam that fits your combination.

[1slo5.0]

Originally Posted by R0B0T a 2" increase in diameter of a tire only equates to a .2 loss in final drive gearing. at a 10mph gain on nitrous i need a .4 loss in final drive gearing to cross the traps at the ideal RPM.

That isn't necessarily true. If you figure it with a calculator its about .3 or so but that is not accurate. As the tire sizes increases, the growth increases which is not figured in the formula. When I figure gearing on my cars with a 28x10.5 tire I figure in 1" of tire growth.

[R0B0T]

Originally Posted by 1slo5.0 That isn't necessarily true. If you figure it with a calculator its about .3 or so but that is not accurate. As the tire sizes increases, the growth increases which is not figured in the formula. When I figure gearing on my cars with a 28x10.5 tire I figure in 1" of tire growth.

yes i included tire growth because i use a 28x11.5 et street which is actually 27.6" in diameter i believe. it might not be dead nuts on .2 decrease in final drive gearing, but it is close enough that it seems to be exactly right when i'm watching the tachometer crossing the traps.