mechanix565

which motor will make more power on a 150-200 shot and last. the goal is 9's in a 2700# foxbody on slicks not opposed to having some mild head work done to either motor. just looking for best bottom end, LQ4,LQ9,or LM7 i have everything ready to go except the longblock. car is bieng built for a grudge race because someone wants to argue with me that old school chevy motors make more power dollar for dollar so i wanna take a pretty much stock motor and kill him lol.

-truck intake+ Accesories
-Ported stock TB
-Longtubes w/ slps
-NX wet system
-Tick polluter cam
-double roller timing chain
-comp Double springs
-chromoly pushrods
-40# injectors
-340lph in tank pump
-aeromotive FPR
-Aeromotive fuel rails
-Th400 w/ 3400 stall
-4.11 gears
-Front coil overs
-full tubular front end
-adjustable rear control arms
-drag launch rear springs

mechanix565

any ideas guys??

mechanix565

i was looking at direct port kits also but the power range starts at 250 and ive never sprayed one of these motors that high..

bttlfed

The lq4 will give you a larger tuning window being low compression. I would say the lq9 would give the best results.

mechanix565

is a 200 shot unheard of of stock heads and bottom end, cam only?? i wanna get some usefulness out of it but im looking for the cheapest way to get the most power for a drag only setup..

soo lq9 w. truck intake
polluter cam or ms3
and a 150-200 wet shot...

what i really need is something i can spray enough with just a cam and get 550-600 wheel power i think its doable considering the cam puts down around 420 on bolton LS1's and an lq9 has more displacement as well as better flowing heads, and with the 200 shot it should get me there... what do you guys think

custm2500

iTrader: (11)

You should be just fine spraying 200. LQ9 is the best for sure but like already said gotta watch the extra compression. Often a speced cam for your aplication is going to be better then something off the shelf. Both of those cams are common and should work good but someone who knows cams might be able to get you more power for the same or less money.

87silverbullet

iTrader: (11)

I think you can get there with either engine. The car is light so it will 60ft hard if you hit it out the hole. I haven't seen anybody use the polluter cam but it can't be any worse than a MS3 or 4. If you have it already then use it, if you don't I recommend to use an MS3.


http://www.youtube.com/watch?v=XUZRYLr983Q

mechanix565

soooo rebuilt boneyard lq9,hellfire rings, ms3 cam w/ springs and roller rockers,stock 317 heads, 200 shot w/ plate, 40# injectors, twin 340 fuel pumps in tank, th350 w/ transbrake, truck intake, ported TB, longtubes, no power steering and a weight of 2700-2900 should get me there i hope.. i may go 4.56 gears and a spool also on slicks and skinnies. ive heard of people running all the way up to a 300 shot on stock motors so if i need to go 250 shot then i will after all it is a cheap junkyard motor..

87silverbullet

iTrader: (11)

4.56 gears are too deep on the bottle. Look at the trap speed on the vid. With that kind of mph he had to be running something around a 3.55 gear.

You will mostly only need a 200 shot. Getting it out of the hole is the key.

mechanix565

ok well i got a set of 3.73's on the shelf at the shop i may use.. was either gonna run a 295 drag radial or the biggest wrinkle wall slick i can tuck.. part of the requirements for the grudge race is that we have to each drive out cars to the track which is like an hour and a half away.. so thats why i was thinkin drag radials. but if a slick can take the ride ill go that route... should i just run a WOT switch so it just hits wide open right out of the hole?? or is a 200 shot too much off the line.

87silverbullet

iTrader: (11)

If the tire and suspension is set to take it, hit it off the line. You will reduce your ET more the quicker you can get it out the hole. If you can put a drag radial on it and stick it then do so. You will get a couple of mph out of them over the slicks.

mechanix565

well its either gonna be a 28x10.5 slick or the biggest DR i can tuck, gonna have to set the front springs stiff to get good weight transfer.. havnt raced at the track in awhile.. gonna be rusty on suspension setup.

mechanix565

the guy im racing is building a full body full interior 427 small block chevy. all merlin parts im not sure what one of those puts down for power but i dont think he will hit 9's

87silverbullet

iTrader: (11)

He better have some good heads on that thing. Not many SBC 23* heads out there that can flow well to feed a 427. If it actually has World products heads on it, then its not going to be that good of a performer.

mechanix565

hes a good friend of mine but we always argue bout old school vs new school so we put 1000 bucks on who can build the faster car by next year anything goes so i would love to beat him cam only with spray lmfao i think he is going aluminum heads 2.05 intake valve thats what he has said..

87silverbullet

iTrader: (11)

Yeah, but what aluminum head? AFR, Brodix, All-Pro, Dart? All those heads are going to give you a serious problem on a SBC 427.

Now if you were building an LS 427 to make the stakes even then he would be the one with the issue.

mechanix565

not sure we r both being secretive on the setups, to be safe should i grab some L92's ported with stainless valves, an l92 intake, and a 92mm TB? would that gain alotta power over the truck intake and 317;s?

specs on the L92's are

Intake Valve- 2.180
Exhaust valve- 1.60
250cc intake port
80cc exhaust port
68cc chamber

going from 72cc chamber to 68cc will net a small compression increase but who cares.. just wondering how well l92's flow nitrous

edit: i also am loving the new holly intake. may make a nice addition vs the ls3 intake seems to flow very well from what ive read..

soo new setup im thinkin

stock lq9 bottom end w/ hellfire rings
ported l92's
holley modular intake w/ fuel rails
FAST 102mm throttle body
1 7/8 longtubes
200 wet shot plate kit
th350 w/ transbrake
3.73 or 3.55 rear gears

mechanix565

he bought some Racing Head Service heads.. are they any good?? and he said they were cast iron..

1994t/a

275/60/15 hoosier drag radials man....trust me they will hook.They hook hard as slicks do but are a little more stable on the street.They arent street legal but i drive my foxbody 13 miles to the track on them no problem.Mine are on a 15x10x6.5 weld wheels.You'll have do some beating on the inner fender wells but they'll fit.

mechanix565

ur setup in ur sig looks similar to what im doing, u have trans brake?
whats ur 60ft, et, weight and hp? and are you on a transbrake?