varam03

I think your pretty much not gonna go any faster dude...i have a best time (only 1 track day on motor tho..)in my EFI 92 GT 5.0 with just gt40 iron heads and edelbrock upper/lower and a few other bolt ons with full suspension, with a 1.71 60' time on a 235/60/15 Mickey T ET street radials at 15 psi..in the 12.90's at 106...so your not much different than that on the speed but your ET is quicker...if you went 12.6's at 108..thats probably a near perfect run on a carbed motor, unless your trying to spend WAAY to much time to squeeze another tenth out of it, just buy a used nitrous kit, i did that and dropped over a second, with a 125 dry shot...got the kit+purge valve and bottle heater for 250$...its a zex kit so its halfway safe..i just bumped timing back from 16 degrees to 10 degrees and went 1 step colder on the plugs..now the car has got 11.80's in it, and i drive it to the track, and back home, over an hour each way...you would probly go down to 11.60's with the mickey thompson et street legals...400$ for a second or so drop down the 1/4th? or 200+ dollars for rocker arms that might give you a tenth...not a hard choice

varam03

maybe think about putting some skinny wheels on it too, I will have a set of weld draglite 4 lug 15x3.5 inch for sale with tires...within the next week or so probably..

SalikDDD

heh unfortunately i need 5 lugs, i'm in a 67 mustang lol.

i've thought of skinnies in the front but never really figured out how much of a difference there would be between my fat 245/17's and a set of wheelbarrow tires

varam03

If your running 17's..the visual factor of skinnies would be terrible...its probly a tenth or two max down the strip, i'd seriously consider nitrous, you could do 125-150 easy..the latter being a wet kit, i just did my first nitrous install with the zex kit and it took like 2 hours, its about as hard as changing headers or something lol...and while filling the bottle sucks, its about 5$/lb. for nitrous at my local track..the extra power when you want it, but the ability to maintain the streetability of an all motor v8 with normal compression, etc...when your just driving off the bottle...makes it worth it...nitrous+ some mickey et street legal radials...and youll see mid 11's and maintain the daily driving ability that you have now, mid 11's on a street legal car is not exactly common, at least not here in VA...

SalikDDD

yeah i've run nitrous before, i've considered it but i'm maxing myself out i believe. i'm pushing almost 6,000 rpms through the traps at the top of 3rd (i only have a c4) so putting nitrous on would definitely belt me over the 108 mph speed but i need a realistic # on what my rpms could be ripping through the traps - i don't wanna be flying down the track and run out of steam on the motor at the 1000 ft mark bouncing off my imaginary redline of 6k.

mjr46

^^^^agreed my friends 68 cougar with a 347 and c-4/4.11 gears does just that running 12.30's @108/109, either you need less gear or taller tire to spray it and still have a usable power band, when I sprayed my 85 and went from 118 mph to almost 126 with a 3.73 gear I was definately getting towards the upper end of the power band and before spraying I had thought about switching to 4.10's but not so sure now..for N/A it might improve me some but with added power of no2 the 4.10's may hurt me on the top end

Joel5.0

I'm not negatively criticizing your setup, but look at the whole config. You have a 331 stroker in a '67 classic making 302 performance. I know nitrous is usually looked at as the combo "correction" factor....... but you will be leaving some performance potential on the table.

Since we are comparing setups, this is a local EFI 302 setup, F-303 cam, MAF, 24# injectors, Edelbrock (IIRC) heads with 4.10 gears, homemade spool, T5 and 100% N/A on street tires, launching at very low rpms........ wouldn't a 331 stroker setup take it down the track in the 11s range?

Again, don't misinterpret this feedback as a negative one, more as a hint to look into the specific items in your setup that are not allowing it to perform as expected N/A.

SalikDDD

i still don't get how it's "302 performance" if the setup was built correctly. i have heads that flow more if not a considerable amount more than AFR 185's, i have dual plane intake (which can easily be swapped as can the carb) a good cam, headers etc. the only thing i'm lacking with that is the right size rockers - i'm just wondering how it's so wrong with similar setups that run about the same - and technically no it shouldn't run 11's and it doesn't.

personally i'd like it to, but with the heads out of the way because i KNOW what they flow, the only other alternative is a cam/intake or a carb.

mjr46

what joel is refering to is 302's have been built to output what your stroker is, let me put some things in perspective for you by watching these videos, here is my 85 with a 306 with .200 dome pistons and afr 185 heads and comp xe282 cam
http://s242.photobucket.com/albums/f...t=DSCN1088.flv

and here is the same set up and only change is a 347 shortblock that's it
http://s242.photobucket.com/albums/f...008fall011.flv
if your heads out flow my 185's then why are you slower??? and please don't be upset, I'm trying to understand where the combo is lacking too.....I don't feel a change of rockers is going to give you all that much....and Imo any stroker built right should run 11's at least 11.90's

SalikDDD

haha, i totally understand - that is why i'm trying to figure this all out and see where it's messed up at, i really want to get this combination moving. i'm just trying to get this thing right :/

personally i don't know what else it could be, like i said i don't wanna dump money on a intake or a carb or whatnot if it's not even going to help :/ i'm confused with this believe me i know it's got more in it. i read on ford muscle the project 331.. similar to mine in a way and it's belting out low 11's :/