|
Author
|
Topic: 331 stroker and gt-40 aluminums?
|
svfreerider87
¯
Member # 5748
|
posted
 
 
what's the ford community's opinion on running a 331 stroker with gt-40 aluminum heads with gt-40 upper and lower plentums? is this a pretty good set up? any estimation on power to the wheels with a mild porting of the heads? (btw have all basic bolt ons to go with it ie injectors bigger fuel pump, full exhaust, (all the basic bolt ons). any and all input greatly appreciated.
--------------------
Dreamspeed Motorsports
Posts: 1685 | From: Sunnyvale | Registered: Jun 2005
| :
|
|
iceman302
¯
Member # 7180
|
posted
What cam?
Depending on a lot of variables, including the dyno... somewhere between 325-350 rwhp with all of the right supporting parts.
--------------------
'65 Mustang Fastback
Posts: 4171 | From: Rancho Murieta | Registered: Oct 2006
| :
|
|
2stangs69-91
¯
Member # 1951
|
posted
I run this setup with a blower and it works OK. If I ever build a 331 N/A I would go with a better head than a GT40 aluminum. A nice AFR or even Vic Jr. head would work great.
--------------------
69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
| :
|
|
svfreerider87
¯
Member # 5748
|
posted
is this combination nitrous friendly? ![[Big Grin]](biggrin.gif)
--------------------
Dreamspeed Motorsports
Posts: 1685 | From: Sunnyvale | Registered: Jun 2005
| :
|
|
iceman302
¯
Member # 7180
|
posted
quote:
Originally posted by svfreerider87:
is this combination nitrous friendly?
Nitrous is never friendly LOL.
--------------------
'65 Mustang Fastback
Posts: 4171 | From: Rancho Murieta | Registered: Oct 2006
| :
|
|
SmokinLX
¯
Member # 1684
|
posted
GT 40's are better on 302's. Spend the extra money on the head's.
--------------------
Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
| :
|
|
98slowhoe 'FIFTYLX'
Uncle Frank
Member # 895
|
posted
I run Vic Jr's on my 331 and I wouldn't go with anything smaller or lesser unless it was stock block and I was pushing 10+lbs of boost. N/A get something better. Atlest some performer RPM's TW's ported or 165's at the very least. But depends on your supporting hardware.
--------------------
AKA Franky Freaking 5 liter
Advanced Engine Development
SCT dealer
Dynotuning
Engine building
916*275*8212
88 4runner on 42's
Posts: 4206 | From: Folsom | Registered: Feb 2002
| :
|
|
svfreerider87
¯
Member # 5748
|
posted
so gt 40s are best for going with a stock bore?would i be better keeping the gt40s and going stock bore and eventually going supercharged?
--------------------
Dreamspeed Motorsports
Posts: 1685 | From: Sunnyvale | Registered: Jun 2005
| :
|
|
92stangLX
¯
Member # 3252
|
posted
quote:
Originally posted by svfreerider87:
so gt 40s are best for going with a stock bore?would i be better keeping the gt40s and going stock bore and eventually going supercharged?
This combo will work fine on a 331. However, you will get more power with a better set of heads. If you can afford it I would go with a set of TFS heads instead. If not then run the 331 with the GT40's. You will get more torque then the 302. Also, consider porting the lower intake.
If you are going to add a blower later make sure you build the motor with boost in mind. Keep the comperession at 9:1 and make sure you have a strong forged bottom end with good head gaskets.
Posts: 5302 | From: San Francisco | Registered: Sep 2003
| :
|
|
svfreerider87
¯
Member # 5748
|
posted
I can port the upper and lower intake plentums right? how about the throttle body and egr spacer?
--------------------
Dreamspeed Motorsports
Posts: 1685 | From: Sunnyvale | Registered: Jun 2005
| :
|
|
2BlueGeeTees
¯
Member # 4702
|
posted
i had to get rid of my gt-40s for some edelbrock performers with a port job because i could flow enough cfm to feed my 347 it would have choked it out at higher rpm. i would definetly go with a different head. cam selection is also important
Posts: 2316 | From: Vacaville | Registered: Jul 2004
| :
|
|
92stangLX
¯
Member # 3252
|
posted
quote:
Originally posted by svfreerider87:
I can port the upper and lower intake plentums right? how about the throttle body and egr spacer?
You can port the lower but not the upper on a GT40. They only thing you can do is enlarge the throttle body opening (probably a good idea).
Posts: 5302 | From: San Francisco | Registered: Sep 2003
| :
|
|
svfreerider87
¯
Member # 5748
|
posted
what can I do as far as cleaning the intakes, they're all gummed up with some sort of blackish petroleum substance, can i have them hottanked or something similar?
--------------------
Dreamspeed Motorsports
Posts: 1685 | From: Sunnyvale | Registered: Jun 2005
| :
|
|
92stangLX
¯
Member # 3252
|
posted
You can have them hot tanked or just buy a shitload of carb cleaner and go to town.
Posts: 5302 | From: San Francisco | Registered: Sep 2003
| :
|
|
Email this post to someone!
Printer friendly view of this Ford topic
