Hot Rod Forum : Hotrodders Bulletin Board

Hot Rod Forum : Hotrodders Bulletin Board (
-   Engine (
-   -   Ford engine questions. Small block Ford (

Hookedup12 12-03-2012 06:42 PM

Ford engine questions. Small block Ford
I currently have a newly rebuilt 289 bored .030 over, turned crank, speed pro skirted forged pistons, all internals balanced, with ported and polished e7te heads, rpm air gap intake, holley 600, hooker longtube headers, msd pro billet dist., 6-al2 box, blaster 2 coil.

first question how much power should I get out of that 325-350???

second I have $2500 I was wondering if it would be better to build a new 347 stroker with tfs heads for 2690.98, or supercharge it for around $3000. Or stop worrying just drive it and spend money elsewhere

Its kind of silly to want to start over and build a new motor since this one has just been built and not driven yet, so I see no point in redoing it.

Do you think it will run good in a 68 coupe mustang with 2500 stall c4 and 3.55 gears or am I just worrying :confused::confused:

hcompton 12-03-2012 07:16 PM

It will be fine. Run it. If it is so slow it makes you mad at it spray the hell out of it until it blows. Then build the 347 or better stroker motor. Late 302 blocks with roller cams are common so no need to tear this one apart. Run it and have fun. Turbo will always help alot and does not cost much to build up if sourced right. But i dont think it will be needed. Go have fun.

If going for race car or really fast street car it never hurts to have an intermetiate motor. To help get the suspension dailed and running dead straight at the track. Best tp fid out if its going to get wobbly with a 14 second run than a 10 second run. Both can be bad. Lots of good saftey equipment that cost some bucks as well. Roll cage and better rear end gears and wider rear wheels and tires.

Whats the compression ratio?

hcompton 12-03-2012 07:21 PM

Sorry to say 325-350 may be a little optamistic. Probably a sad amount less. But dont get hung up on numbers get the tire hooking up and the car running flat it will still be fast enough.

Hookedup12 12-03-2012 07:29 PM

Really 325 on the motor not at the ground is optimistic wow that blows.

hcompton 12-03-2012 07:39 PM


Originally Posted by Hookedup12 (Post 1618752)
Really 325 on the motor not at the ground is optimistic wow that blows.

Cam and compression ratio make all the difference. So i cant really be sure since i dont know these things.

325 at the motor is not impossible by any means. I was talkng about at the wheels.

Hookedup12 12-03-2012 07:52 PM

The deck was trimmed .010 and heads were milled and the pistons at flat top the builder told me I would have around 10:1 compression. I know it's a pbm cam around a .498 lift can't remember other things it sounds great and it winds up to 7000 rpm all day long. Just hasn't moved under a load yet

Hookedup12 12-03-2012 07:53 PM

Would it be worth time to get a custom grind cam since there not crazy expensive or just save money for another thing

hcompton 12-03-2012 08:42 PM


Originally Posted by Hookedup12 (Post 1618762)
Would it be worth time to get a custom grind cam since there not crazy expensive or just save money for another thing

Well you may have a good cam right now until its in the car i would not mess with it.

10:1 cr is good and 7 k rpm sounds pretty good. Think it will do the trick. Cr is way to high for blower without changing the pistons. A little joice and your done. Run it and save your pennies for a big block.

I am a full on chevy guy so i know what i would stick in it. But my friends usally talk me out of the fords i come across before i get a chance to put a chevy motor in them. But i would be happy with what you got. Light car high rev engine and good compression. Should be very nice. You must have thought about it to much while it was in the garage must be time to put it in the car.

Hookedup12 12-03-2012 09:16 PM

Lol that's what I was thinking!!! My mechanic says it'll have plenty of power for this light mustang and not to get worried about numbers it's only 2450 pounds with the gutting they did

Hookedup12 12-03-2012 09:42 PM

I mean 2540 pounds my bad

Hookedup12 12-03-2012 09:43 PM

2720 with me in it of course

greazyball 12-03-2012 10:01 PM

i think over 300 horse with that set-up is generous.not to disrespect at all.But i ran a 289 bored .30 over,balanced,an autolite 4100 4bbl,a 260H cam,Pertronix ignitor ignition,a pair of 69 351W heads D00E that were mildly ported on the intake side and ALOT on the exhaust exhaust ports suck on factory castings.And i was using a dual plane weiand aluminum intake manifold.I had the engine in my 1965 falcon convertible.I had it on a dyno and it peaked at 273 horsepower.Not too bad at all considering i didnt really know what i was doing thoroughly.I do know that at the time i was building it,I wanted to get to 300 horses maybe a bit.But it wasnt going to happen with the pieces i was using.In order to get 300 or more hp.I needed to lay out ALOT of money for aftermarket heads,roller cam/rockers a better intake manifold etc.I ran a 4spd for awhile and i was using a 9in rear axle from a Bronco with 3.73's She got out of the hole FAST!!.The car was no slouch for sure.And at least one 396 camaro got a nasty surprise.In my opinion you need better aftermarket items that go together a 'system' and do your homework on cams,heads etc it wont be cheap reaching 300 horsepower or more

greazyball 12-03-2012 10:19 PM

i wanted to add,that i had 9.5 compression ratio on the cylinders.I had some cheapo brand X long tube headers with an H pipe all the exhaust was going thru 2'in and quarter exhust and cheapo glass packs.And the best part was when it was being dyno'd the tuning guy took a few minutes,timed the engine properly..i didnt,i had guessed at it..sounded good and smooth,So i must have been 'dead-on'..nope,He also changed out my 'champion' plugs for a set of autolites,tinkered with the gap and the pertronix..i picked up 11 horses right there in the dyno shop..all for the cost of 8 plugs

vinniekq2 12-03-2012 10:43 PM

because the 289 will rev quite well,why not leave it alone? invest in 4.3 gears and an over drive transmission.Its a lot of fun having a little under powered car that can destroy tire melting big blocks that drink gas and eat tires

Hookedup12 12-04-2012 06:59 AM

The headers are super comp longtubes exhaust is 2.5 mandrel bent all the way back into magnaflows and dumped. I need some better plugs I'm sure. I wanted to get new heads but it almost seems pointless honestly. And greazyball was that on motor or at tire ???

All times are GMT -6. The time now is 10:58 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.