how much hp with this combo?
#1
Junior Member
Thread Starter
Join Date: Nov 2007
Location: windsor, ontario
Posts: 47
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 mustang gt 89 camaro
Engine: 302 355 tpi
Transmission: manual
Axle/Gears: 3.55 and 3.42 posi
how much hp with this combo?
350cui Chevy V8 Bored .030 over (355cui)
Holley Street Avenger 670CFM Carb (electric choke)
Edelbrock Performer RPM Intake
GM Performance Vortec heads w threaded rockers studs and guide plates installed
COMP Camps XE262H-10 "Xtreme Energy" hydraulic flat tappet cam. 218/224 dur @ 0.050, .462/.469 lift, 110 deg LS
MSD 6AL Ignition Box
MSD Probillet 8361 Distributor
Headman Shorty Headers
Optima Red Top Battery
Under 30k on the bottom end, around 5k on the top end.
Holley Street Avenger 670CFM Carb (electric choke)
Edelbrock Performer RPM Intake
GM Performance Vortec heads w threaded rockers studs and guide plates installed
COMP Camps XE262H-10 "Xtreme Energy" hydraulic flat tappet cam. 218/224 dur @ 0.050, .462/.469 lift, 110 deg LS
MSD 6AL Ignition Box
MSD Probillet 8361 Distributor
Headman Shorty Headers
Optima Red Top Battery
Under 30k on the bottom end, around 5k on the top end.
#2
Supreme Member
iTrader: (1)
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Likes: 0
Received 4 Likes
on
4 Posts
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: how much hp with this combo?
Should be able to get 325HP out of that.
#3
On Probation
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes
on
17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: how much hp with this combo?
325 horses my back side, that should get you past 375 crankshaft horses.
#4
Supreme Member
iTrader: (1)
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Likes: 0
Received 4 Likes
on
4 Posts
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: how much hp with this combo?
That's a pretty mild cam.
If the moon lines up right, 375HP might be possible, but everyone (just about everyone) seems to be disappointed with their dyno results, so I didn't want him to be disappointed when he shows 309HP on the chassis dyno for example.
If the moon lines up right, 375HP might be possible, but everyone (just about everyone) seems to be disappointed with their dyno results, so I didn't want him to be disappointed when he shows 309HP on the chassis dyno for example.
#5
On Probation
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes
on
17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: how much hp with this combo?
People seem to forget they lose HP to the alternator, power steering and water pump. Plus you lose 1% for each 250' of elevation, plus you lose 1% for each 10 degrees F above 60 degrees F, plus even if you use synthetic lubes, a T5 trans and 7.625" axle will eat at least 13%, or a 700R-4 trans and a 7.625" axle will eat at least 22%.
Without all those corrections, his combo should reach 400 horses.
Without all those corrections, his combo should reach 400 horses.
#6
Junior Member
Thread Starter
Join Date: Nov 2007
Location: windsor, ontario
Posts: 47
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 mustang gt 89 camaro
Engine: 302 355 tpi
Transmission: manual
Axle/Gears: 3.55 and 3.42 posi
Re: how much hp with this combo?
the guy selling the motor finally replied and said it put out 238 hp and 310 torque through a 700r4 and 7.5 10 bolt in an s10
Trending Topics
#8
On Probation
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes
on
17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: how much hp with this combo?
That cam, unmolested Vortec heads, RPMAirGa and 1.625" long tubes, I've seen 415 crank HP, standard correction to 60 degrees F, dry air, 29.92 barometer, sea level. And if you do anything to increase the line pressure in a 700R-4, or use an aftermarket torque converter (or both) it will eat closer to 30 percent.
#9
On Probation
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes
on
17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: how much hp with this combo?
And no telling about the mufflers the guy might've been choking it with. That 415 was with a pair of 2.5" Hooker Maximum Flows, which are not very quiet.
#10
On Probation
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Likes: 0
Received 17 Likes
on
17 Posts
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: how much hp with this combo?
This bothered me all night. Here's what I wish to add. The FastBurn 385 uses heads that don't actually outflow the vortec heads, and it uses the ZZ4 cam, which is smaller than the OPs cam, and by virtue of such comparison this puts the OP above 385 HP. Also, the 415 I saw was without the HP loss of a power steering pump, an alternator and a non-electric water pump. Which puts us back around 390-400 HP.
#11
Member
Join Date: Sep 2007
Location: Baltimore
Posts: 169
Likes: 0
Received 0 Likes
on
0 Posts
Car: '82 Z-28
Engine: 355
Transmission: TH-400, 8" ATI MRT
Axle/Gears: Moser 9", 4.56's
Re: how much hp with this combo?
one key component that the o.p. left out is static compression ratio. what is it? with decent compression I can see it possible to get in the upper 300's.
Thread
Thread Starter
Forum
Replies
Last Post
roysatikas
Transmissions and Drivetrain
0
09-22-2015 08:15 PM