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Old 06-25-2014, 12:38 AM   #1
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351w efi build questions

In about 3-4 weeks im going to be buying this 351w assembled block from late-model restoration. Mustang 351w Economy Short Block Accepts Roller Cam (79-95) 5.8L - LatemodelRestoration.com

Has anyone else here purchased this block if so let me know what you think of it.
My build consists of :
- Trickflow stage 2 cam
- AFR 185cc heads
- 1.6rr
- Edelbrock performer intake

*Also*
The block comes with stock cast aluminum pistons and im wondering if i will have trouble with piston to valve clearance?, the AFR 185 heads are 2.02 valve dia. Hopefully i wont have to move down to a stage 1 cam.

Let me know what you guys think, thanks
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Old 06-25-2014, 07:51 AM   #2
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Call them and check to see what reliefs they have. You should be running a custom cam regardless, get ahold of Ed Curtis at Flowtech Induction for a good grind. A Performer is going to be too small for that engine, you'll want a RPM II for 351w.

Personally I don't think its a good buy, I'm sure the rods are going to be just stock type rods and nothing about that rotating assembly is going to be good for much over 500hp. Not sure what your budget is but you can get a really nice 408 stroker DIY kit from Fordstrokers for $2500 or so and that is a full forged scat/wiseco setup with the right reliefs for TF heads if you want them.
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Old 06-25-2014, 12:24 PM   #3
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You really gotta call and see what kinda guts are in that thing.


What was funny was the customer picture that they posted below the item which was some huge twin turbo thing LOL.


If you go into this knowing what you are getting which is a budget minded motor and know the reality of it then it's ok.


Scotty is right that the intake is tiny.


Do your heads have 1/2" holes?


Is that intake for a 351?
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Old 06-25-2014, 11:18 PM   #4
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yea the block is filled with stock internals, that are just re-machined. im not building a drag car just a mild street car, i already have the top end parts i listed sitting in my garage from a previous 302 build, im on a budget so i got the intake off a buddy for 100 bucks it will have to do because im not spending $650 on another intake lol. and yes the intake will fit the afr 185's and they are 1/2 holes out of the box

if everything works out with the clearance worries, my set up should be good for 350-375hp & 400-425tq with a mild tune. im not looking to spray or turbo this block because of the cast pistons it will be a all motor

i just wanna know if anyone has any experience with one of these blocks and what they think of it quality wise? and what they used as a cam and top end combo?
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Old 06-26-2014, 03:32 PM   #5
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Is that intake for a 351?
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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 06-26-2014, 03:37 PM   #6
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Yea my buddy used it on his 393 stroker


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Old 06-26-2014, 10:29 PM   #7
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Perfect then.

Alot of people do not know that the 351 is wider.
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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 06-27-2014, 09:28 AM   #8
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Perfect then.

Alot of people do not know that the 351 is wider.
Its always fun to enter a thread someone makes about how their intake is not fitting and they don't know why and you mention that it can't physically fit and you get... "what... my buddy/mechanic/some random internets person told me I could run it!". Then they spend another 2-3 pages asking the same question hoping someone can give them the answer they want.

And you can substitute pushod/header/whatever for intake. Ppl never do any research it seems. At least this OP did as far as fit but a regular performer is way way too small for a 351 unless he's talking about a Performer RPM or RPM II.
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Old 06-27-2014, 09:31 AM   #9
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Its always fun to enter a thread someone makes about how their intake is not fitting and they don't know why and you mention that it can't physically fit and you get... "what... my buddy/mechanic/some random internets person told me I could run it!". Then they spend another 2-3 pages asking the same question hoping someone can give them the answer they want.
So true so true.


That is why I ask so many questions first when I see these threads cause they usually are like....


"My car is not running right it makes smoke....why?"
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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 06-27-2014, 09:09 PM   #10
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Originally Posted by scottydsntknow View Post
Its always fun to enter a thread someone makes about how their intake is not fitting and they don't know why and you mention that it can't physically fit and you get... "what... my buddy/mechanic/some random internets person told me I could run it!". Then they spend another 2-3 pages asking the same question hoping someone can give them the answer they want.

And you can substitute pushod/header/whatever for intake. Ppl never do any research it seems. At least this OP did as far as fit but a regular performer is way way too small for a 351 unless he's talking about a Performer RPM or RPM II.

This is just a curious question !
If u get a mustang like mine 1992 lx 5.0 with stock engine !
U put headers and good exaust line a good cold air intake ! Does it worth doing a tune with a proffessional tuner , even if u dont put no top end kit ! After all the car is over 20 years old !! Would it make any good and gain !
Just want ur opinion tks !
Dany


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Old 06-27-2014, 09:51 PM   #11
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IMO no, not going to get much if anything with the stock heads.
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Old 06-27-2014, 09:56 PM   #12
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When you jump into heads and a cam then you can benefit specially on the 94/95.
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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 06-27-2014, 10:02 PM   #13
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Right on tks !


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Old 06-28-2014, 08:04 AM   #14
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IMO no, not going to get much if anything with the stock heads.

Scotty , i am trying to find the motor mounts . The vert ones u were talking about . can u tell me what website i gotta go pls ! I realize i have solide one ! Now i am sure thats where my vibration come from tks


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Old 06-28-2014, 11:39 AM   #15
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Ok I'll do the legwork because I know it can hard to be a French Canadian sometimes

(also I know exactly where everything is located already)

Here are the OEM vert mounts.

And here are the poly mounts you want if you go poly.

You do NOT want parts store rubber mounts as they are all trash vs OEM, there are no exceptions to this. If going poly, you want the Energy Suspension poly mounts specifically because they've been the only poly mount maker to consistently get the geometry right. Prothane and the cheap "poly motor mounts" you see on AM/LRS put the motor too high up and this can lead to issues with hood clearance and driveline geometry.
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Old 06-28-2014, 01:30 PM   #16
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Tks scotty ! Lol on the french canadien !! Believe i know people they dont even want to learn english stupid !


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Old 06-28-2014, 03:17 PM   #17
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Tks scotty ! Lol on the french canadien !! Believe i know people they dont even want to learn english stupid !


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We have similar problems in the USA. Not getting into it more than that tho.

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Old 06-30-2014, 10:27 AM   #18
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We have similar problems in the USA. Not getting into it more than that tho.

No entiendo que me dijiste
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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 06-30-2014, 07:59 PM   #19
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We have similar problems in the USA. Not getting into it more than that tho.


I was talking to a coworker today ( the kind of guy who gots 12 muscle cars in is contry road backyard and none of one running !!! ) anyway when he saw rosy he was suprise how clean the car was and after a long boring talk he starts taking the MAF off !!!!! I asked what ur doing man ! Then he said : i am gonna grind a bigger hole in that MAF and you will gain 10 ponnies right off the bat !!! Wow ! i refused of course after arguing with him he gave it back to me and said :that s what i did with my mustang back there ! I should have take a picture of that mustang !
So i said that mustang ' s not even running !
After thinking about it sometimes those guys might have some knowledge in some way . But since i read all ur post i kind a know that u know ur stuff

What do u thing about that scotty , is it possible to do that , grinding a bigger hole inside the MAF ??????
I am just asking because i will make major work on rozy next winter but until then if i can make better with ponnies for no cost i will
Tks and btw have a good independance day to u all
Dany


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Old 06-30-2014, 09:07 PM   #20
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Um, no that guy is a complete moron if he thinks you'll gain 10hp from mutilating the MAF. Even putting the best aftermarket MAF available in there won't pick up that much.

This is what happens when backyard mechanics get ahold of their buddy's vehicles or post bad information on an internet forum.
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Old 07-01-2014, 02:34 PM   #21
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Don't let that guy touch your car.
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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 07-01-2014, 04:51 PM   #22
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Don't let that guy touch your car.

Lol i wont !!!!!!!


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