What is the best intake manifold
10-21-2006, 01:59 AM
#51
5th Gear Member
Join Date: Mar 2005
Location:
Posts: 3,195
RE: What is the best intake manifold
ORIGINAL: mrbigshot
if your motor is stock the trickflow and edelbrock rpm are going to be to much intake and you will lose most of your bottom end (and may actually slow you down). i would suggest waiting untill you get the afr 165's to swap the intake out. instead the best way for you to gain some time is with a set of gears , converter (if auto), and a little diet. this will add a lot of fun when you drive the car and shows the biggest improvement in times over stock.
car craft took a 91 5.0 motor and made it make some serious horsepower. they simply honed the cylinders and used new rings. they kept the factory 9.0.1 pistons and factory ho cam. keep in mind the factory cam is very stout in these motors (intake 276 duration -.445 lift, exaust is 266 duration -.445 lift) and is capable of bringing big power with good heads. they used a carb set-up when they tested. it was a weiand stealth (same as a rpm) and a small 625 cfm carb so it coresponds well vs the efi that you want to use.
the motor with stock 5.0 e7te heads made 278 hp and 315 lb-ft. that was with good headers and the intake swap, it made for a soggy street motor due to the intake killing the bottom end. when they took the stock heads off and used a set of afr 165's power jumped up to 382 hp and 368 lb-ft, this tells you what kind of a cork the stock heads put on these motors! they decided that rather than swapping cams they would simply swap in a set of 1.7 roller rockers. this added an additional 23hp and 12 lb-ft with all kinds of power under the curve, making the grand total 405hp and 380 lb-ft (lift went up to .473). not to bad for a stock shortblock and cam.
by going with the b303 cam you wont be gaining much power. the b303 specs out at 284 duration and 480 lift. this durration comes at a price however, the cam is soft untill 3300 rpm. by using the stock cam and 1.7,1 rockers you get nearly the same lift and the lower durration allowes for a stronger street motor. not only that you can say its a stock cam and that really tweaks some people.
car craft afr head swap
if your motor is stock the trickflow and edelbrock rpm are going to be to much intake and you will lose most of your bottom end (and may actually slow you down). i would suggest waiting untill you get the afr 165's to swap the intake out. instead the best way for you to gain some time is with a set of gears , converter (if auto), and a little diet. this will add a lot of fun when you drive the car and shows the biggest improvement in times over stock.
car craft took a 91 5.0 motor and made it make some serious horsepower. they simply honed the cylinders and used new rings. they kept the factory 9.0.1 pistons and factory ho cam. keep in mind the factory cam is very stout in these motors (intake 276 duration -.445 lift, exaust is 266 duration -.445 lift) and is capable of bringing big power with good heads. they used a carb set-up when they tested. it was a weiand stealth (same as a rpm) and a small 625 cfm carb so it coresponds well vs the efi that you want to use.
the motor with stock 5.0 e7te heads made 278 hp and 315 lb-ft. that was with good headers and the intake swap, it made for a soggy street motor due to the intake killing the bottom end. when they took the stock heads off and used a set of afr 165's power jumped up to 382 hp and 368 lb-ft, this tells you what kind of a cork the stock heads put on these motors! they decided that rather than swapping cams they would simply swap in a set of 1.7 roller rockers. this added an additional 23hp and 12 lb-ft with all kinds of power under the curve, making the grand total 405hp and 380 lb-ft (lift went up to .473). not to bad for a stock shortblock and cam.
by going with the b303 cam you wont be gaining much power. the b303 specs out at 284 duration and 480 lift. this durration comes at a price however, the cam is soft untill 3300 rpm. by using the stock cam and 1.7,1 rockers you get nearly the same lift and the lower durration allowes for a stronger street motor. not only that you can say its a stock cam and that really tweaks some people.
car craft afr head swap
yes my b-303 cam doesnt have much till around 3k rpm.
10-23-2006, 02:35 PM
#52
5th Gear Member
Join Date: Nov 2004
Location: Texas
Posts: 3,834
RE: What is the best intake manifold
ORIGINAL: Mustangkiler
First of all 410 way to go, if you get them and regret it i will buy you new something smaller, second if you want trickflow, get the heads with it so everything works together and also ,as far as i know not sure if the eddies with 2.02 valves you can use, trickflow is the only one you can get with 2.02 intake valves everything else you need smaller 1.94s and in 5.0 mag while back, afr had little bit more at low end and tfs had little bit more top end, practically identical power both are great. And i hate to break it to katmandu, but then how do old 440s or just about any car increase horsepower and torque when you put dual carbs or a better intake on it, getting more air in the engine with bigger runners is getting more air, just a matter of losing low end torque which is marginal compared to the hp gain, but what would i know my car last car only got 3 tenths quicker with only a bigger intake.
First of all 410 way to go, if you get them and regret it i will buy you new something smaller, second if you want trickflow, get the heads with it so everything works together and also ,as far as i know not sure if the eddies with 2.02 valves you can use, trickflow is the only one you can get with 2.02 intake valves everything else you need smaller 1.94s and in 5.0 mag while back, afr had little bit more at low end and tfs had little bit more top end, practically identical power both are great. And i hate to break it to katmandu, but then how do old 440s or just about any car increase horsepower and torque when you put dual carbs or a better intake on it, getting more air in the engine with bigger runners is getting more air, just a matter of losing low end torque which is marginal compared to the hp gain, but what would i know my car last car only got 3 tenths quicker with only a bigger intake.
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