StreetStangs.net  

Go Back   StreetStangs.net > Technical > Ford Pushrod Tech (5.0 & 5.8)

View Poll Results: what hp will it make?
400-425 3 50.00%
425-450 1 16.67%
450-475 1 16.67%
475+ 1 16.67%
Voters: 6. You may not vote on this poll

Reply
 
Thread Tools Display Modes
Old 02-26-2008, 11:36 PM   #1
militarymustang88gt
Senior Member
 
militarymustang88gt's Avatar
 
Join Date: Jun 2007
Location: bham and auburn
Posts: 337
question on horsepower amount

i am about to start building a 408 to put in my mustang. i am running a 4.0 crank, 6.2 rods, keith black pistons that have two valve reliefs that are 6.5cc. i am looking at getting edelbrock aluminum heads from summit that have 2.05 1.60 valves with a 60cc combustion chamber. put it in this formula thing and it will be right at 11.9:1-12:1 compression ratio. so my questions with a healthy cam choice good for the road what kind of power do you think i will be making?
__________________
finally got my avatar. it is the white one.
militarymustang88gt is offline   Reply With Quote
Old 02-27-2008, 12:06 AM   #2
1sicklx
BamaMafia 4 Life
 
1sicklx's Avatar
 
Join Date: Feb 2005
Location: Lake View, AL
Posts: 2,577
There's a lot of variables that come into play here that make accurately predicting power output a pretty tall order (typically always is).

Cam choice will be a big factor ... carb or efi will make a difference, as will the exhaust.

Don't forget that the only numbers that really matter are on the time slip not the dyno sheet
__________________
1999 Ford F-150 Lariat
1sicklx is offline   Reply With Quote
Old 02-27-2008, 12:39 AM   #3
militarymustang88gt
Senior Member
 
militarymustang88gt's Avatar
 
Join Date: Jun 2007
Location: bham and auburn
Posts: 337
oh i know. streetable too. i am prob going to be looking for a cam with high 500s low 600s for lift, will stay efi with i am figureing 42s just to not put a strain on a 255 pump. maybe a 100 shot just for the track later down the road
__________________
finally got my avatar. it is the white one.
militarymustang88gt is offline   Reply With Quote
Old 02-27-2008, 07:12 AM   #4
coupe
Super Moderator
 
coupe's Avatar
 
Join Date: Dec 2004
Posts: 6,313
Get a dished piston if you want to run pump-gas. Also, use a spider-style intake (converted to EFI) with a throttle-body/elbow on top. With the right cam, and a little work on those Victor Jr. heads, it could make well over 500hp. On pump gas.
__________________
" If you can't explain it simply, you don't understand it well enough. " - Albert Einstein
coupe is offline   Reply With Quote
Old 02-27-2008, 11:41 AM   #5
militarymustang88gt
Senior Member
 
militarymustang88gt's Avatar
 
Join Date: Jun 2007
Location: bham and auburn
Posts: 337
well i have an edelbrock performer upper from the 302 and i just have to get a base for the 351
__________________
finally got my avatar. it is the white one.
militarymustang88gt is offline   Reply With Quote
Old 02-27-2008, 02:10 PM   #6
coupe
Super Moderator
 
coupe's Avatar
 
Join Date: Dec 2004
Posts: 6,313
A Performer Intake?! On a 408?!?

then you need to add another choice: 350-375hp.

Ditch the Performer. It won't perform well in that application.
__________________
" If you can't explain it simply, you don't understand it well enough. " - Albert Einstein
coupe is offline   Reply With Quote
Old 02-27-2008, 03:02 PM   #7
LeeH
Senior Member
 
LeeH's Avatar
 
Join Date: Dec 2005
Location: The conservative underground
Posts: 341
Quote:
Originally Posted by militarymustang88gt View Post
well i have an edelbrock performer upper from the 302 and i just have to get a base for the 351
302 parts on a 400+ cube stroker will make 302 power, If you use an Eddy Performer on a 408 its going to be done about 4500rpm. 2 words, Cross Section!


So far 1sicklx and Matt are dead on!

HP prediction: Too many variables to make a prediction, But the way youre headed it would be fun in a tow truck or daily driven 4X4.

Camshaft: There is way more to a cam than lift and duration, Lift and duration are a by-product of timing events and lobes chosen. A good cylinder head needs good clean charge of fresh air, This means little to no overlap and the use of faster ramps. Advertised duration and duration @ .050 gives you an idea of how fast or slow a ramp is as does LSA. Cubic inches, Total combo and desired operating parameters dictate the cam needed. Optimal for a "Streetable" application is a wide Tq curve, This means you have to be careful picking your parts or the camshaft will have to crutch a poorly chosen combo.

Streetability: This is like asking opinions because everyones perception of "streetable" is different, Mine is if it will idle its streetable.

Intake: Dale has my old Probe/CHP EFI Spyder and I think he is looking to sell it, It is new and is not a Chinese knock-off(original Eddy Vic Jr.).
__________________
89LX Hatch
89LX Coupe
89GT
90GT
93GT
LeeH is offline   Reply With Quote
Old 02-27-2008, 03:44 PM   #8
coupe
Super Moderator
 
coupe's Avatar
 
Join Date: Dec 2004
Posts: 6,313
Quote:
probe efi spyder
for a tall-deck motor(351W)?
__________________
" If you can't explain it simply, you don't understand it well enough. " - Albert Einstein
coupe is offline   Reply With Quote
Old 02-27-2008, 03:55 PM   #9
LeeH
Senior Member
 
LeeH's Avatar
 
Join Date: Dec 2005
Location: The conservative underground
Posts: 341
Quote:
Originally Posted by coupe View Post
for a tall-deck motor(351W)?
Yep, Fits a 9.5 deck block.
__________________
89LX Hatch
89LX Coupe
89GT
90GT
93GT
LeeH is offline   Reply With Quote
Old 02-27-2008, 05:07 PM   #10
QWKSNKE
3v's are slow
 
QWKSNKE's Avatar
 
Join Date: Dec 2004
Location: Here and There
Posts: 17,152
I agree with the others.

Cam decision will decide whether it makes 370 to the wheels or 550 to the wheels
__________________
2009 Porsche Carrera S
2008 ///AMG C63.. Eurocharge Tune. RIP
2019 AMG GLC43..wife's
03 F250 SD.. Edge Evo, AFE Stage 1 CAI
08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's
01 Cobra vert... wife's

I need a new toy
QWKSNKE is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 02:52 PM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.