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http://bostonstangs.com/ -> BOSTONSTANGS.COM -> 5.0/5.8 Engine Tech -> motor swap for the notch
Post Info TOPIC: motor swap for the notch
Jessek410


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motor swap for the notch
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getting close to dropping in the new motor..(306)..friends are telling me to stroke it to a 347 wile its still out, and then put it in but im not sure what to do?? i think shes gutta be quick enough...trickflow track heat intakes with 1 inch spacer,bbk 70mm TB..bbk cold air intake, 24LB injectors with mass air meter, 190LPH fule pump, gt40 heads ported, bbk shortys, b351 svo 1.6 rolerrockers..trickflow springs...comp cams push rods, 302 bored 30over, scat pistons , f303 cam...7qt oil pan much more...using a T5 with 373 rear end gears..will be getting tuned at dez when the motors in..anyone have an idea what she should make for WHP??? someone said around 350...the guy i bought the heads from said he made 330whp at dez on a tired 302



-- Edited by Jessek410 on Saturday 18th of December 2010 02:09:02 PM

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mikefheath87


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300rwhp

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Jessek410


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how do u figure if the dude 89notchabck thats a member of this site made 330whp with these heads on a beat 302 at dez...how would i make less with a fully built 306??? dont make sence

-- Edited by Jessek410 on Saturday 18th of December 2010 02:29:19 PM

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SPDoherty


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if it's already a 306 dont bother with the 347, you dont want to bore a block too many times. It'll weaken it and make it more likely to break especially if you're going to s/c it or nitrous it. Now if you sold the 306 and then bought a 347 that's one thing.

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89 GT 306,Vortech SC-Trim,GT40P heads,Cobra Intake,65mm FRPP TB, 42lb Injectors,PMAS MAF,190lph pump,E303,Crane Adj. 1.6 RR's,FRPP Headers,Pype's X-Pipe,Magnaflow cat-back,Spec Stg II Clutch,Tremec 3550 w/Pro 5.0 shifter,FRPP Alum. Driveshaft,3.55's.
91notchback


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300 rw like mikeheath said you are lower compression and 89notchbacks car is a 331 with higher compression alot of us remember when he posted the day he went to the dyno...my advise is to stroke it to 331 or 347 and if you want to stay n/a raise the compression the main thing that will hold you back is those gt40s maybe bump up injector size to 30 but the 24s will do fine....shawn he wouldnt need to rebore the block really but he would need to clearence the block for 347 and i think 331 also either way gl man and next time try to put it into the correct section ill move it for you

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fox mustangs rule! mustang notch 4.6 4 valve
sled


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my guess would be around 280-300 rwhp, i have a 302 with better heads same intake, injectors rockers and similar spec cam and much better aluminum heads ported, long tube headers and n/a anderson powerpipe and 4.10's and my car made 285 to the tire

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snakebite


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sled wrote:

my guess would be around 280-300 rwhp, i have a 302 with better heads same intake, injectors rockers and similar spec cam and much better aluminum heads ported, long tube headers and n/a anderson powerpipe and 4.10's and my car made 285 to the tire





tim your car only made 200 dont lie

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mikefheath87


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around 300 is typical for a h/c/i car. i dont know where you got 330rwhp from?

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sled


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mikefheath87 wrote:

around 300 is typical for a h/c/i car. i dont know where you got 330rwhp from?




http://bostonstangs.activeboard.com/forum.spark?aBID=102105&p=3&topicID=32548154

-- Edited by sled on Saturday 18th of December 2010 05:57:52 PM

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89notchback


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tim u should of just kicked me in the nuttz i waz tryin to forget that ever happen lol

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93 LX FiveO


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i bet it makes less than 300rwhp just based on what ive seen in the past.

goodluck either way. theres always room to go faster

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mikefheath87


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i was gonna post that thred i dont even have to click it i know which one it is. But that is a kick in the nuts

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91notchback


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i was gonna post it also but i thought it was gonna start a part 2 to that thread haha

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fox mustangs rule! mustang notch 4.6 4 valve
RALFRIZZO


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ill put moey on it it doesent make 300 rwhp even on a dynojet

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sled


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89notchback wrote:

tim u should of just kicked me in the nuttz i waz tryin to forget that ever happen lol




biggrin.gif

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Green92LX


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RALFRIZZO wrote:

ill put moey on it it doesent make 300 rwhp even on a dynojet





true story

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99 Mustang GT: bolted, cammed, geared, 285whp/306wtq
95 F-350 Powerstroke: 35's, intake, turboback
Eightyfivefox


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I'd say go 347 or 306 or even 350 u will have a better chance to make more power

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5pointslow


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i say you make 300-325 rwhp if ya had trickflow 185s

but im gonna say you make 280 rwhp give or take ...on a dynojet
on a mustangdyno prob less

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  • 1988 LX Notch race car -4.6 dohc ,powerglide ,boost ,cage ,mini tubbed,chute..ect certified to 8.50s ,hoppin low 9s high 8s
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5pointslow


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lime green block .....is diffrent just noticed that

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  • 1988 LX Notch race car -4.6 dohc ,powerglide ,boost ,cage ,mini tubbed,chute..ect certified to 8.50s ,hoppin low 9s high 8s
  • 2008 GMC Sierra - Daily driver
sean86gt


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lime green FTW suckas!

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droptopfox


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serously id be surprised to see 300 outa it i had a built 306 with a nastier cam rdelbrock heads gt 40 tubular intake and full bolt on etc a 3550 wiith 4.10s made 301 rw

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Jessek410


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I dont like ppl that lie...i bought a pair of shitty heads off of some dude that fucking lies to ppl, telling me he made 330whp on a tired 302 when they were actually on a built 331 barley making 300....im selling them and getting AFR 185s!....this forum has alot of drama and thats comming for a 18 yearold kidd i dont kno why ppl dont keep it reallllllllllllllll! ...im here to learn and have some fun with ppl that also enjoy mustang and building them...ill post my dyno sheets when im done. and i kno theres alot of cool peeps on here so if u arent a bullshitter dont mind what i said..thankss everyone for the input...my goal is 350+ WHEEL hp...and ill buy w.e i need to make a 350whp N/A notch.

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Steve the joker


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good luck man i like the car, and yea ppl on here like to get at ya, trust me

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91notchback


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if u want 100 percent na you can make the power easier carb but possible with efi raise compression to around 10.0.1 or 10.5.1 use either 185 or 205 afr heads nice cam honest go custom ground or a nasty anderson one..use the trickflow intake you have or get a systemaxx....you are on a good start man gl

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fox mustangs rule! mustang notch 4.6 4 valve
droptopfox


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honestly man i think you throw some afrs or even edelbrock preformers like i had on my gt on that 306 youll make a solid 300rw and it will be a super fun car i had more fuun with my 300 horse gt than anything else so far it was reliable and fun to drive but gl eitherway man

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