losses power over 4000 rpm
05-22-2007, 12:04 PM
#1
Senior Member
Thread Starter
iTrader: (2)
Join Date: Feb 2007
Location: anderson ,sc
Posts: 805
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 formula/00 z28
Engine: carbed 350/ls1
Transmission: 700r4/ a4
Axle/Gears: 3.23 posi/ 3.73 posi
losses power over 4000 rpm
my new motor pull great wot to 4000 rpm and seem to fall off fast. what could be making it losses power over 4000 rpm?
05-22-2007, 02:13 PM
#3
Senior Member
Thread Starter
iTrader: (2)
Join Date: Feb 2007
Location: anderson ,sc
Posts: 805
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 formula/00 z28
Engine: carbed 350/ls1
Transmission: 700r4/ a4
Axle/Gears: 3.23 posi/ 3.73 posi
Re: losses power over 4000 rpm
what do i need to do to the carb i changed the spring and the fuel system is a stock tpi fuel pump in the tank reg. at 4psi and new filters. timing i really dont understand on my car how to really set it bc it runs best set at 50
05-22-2007, 03:49 PM
#4
Supreme Member
Join Date: Aug 2005
Location: Yellowknife, NWT, Canada
Posts: 3,004
Likes: 0
Received 2 Likes
on
2 Posts
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
Re: losses power over 4000 rpm
Jack up the fuel pressure and knock that timing back, alot...
Somethings wrong if you need 50* adv to have it run decent! Is this initial or 'all in' ??
Depending on the actual cam it should probably need about 10-15* initial but still hit the usual 36* max adv
Somethings wrong if you need 50* adv to have it run decent! Is this initial or 'all in' ??
Depending on the actual cam it should probably need about 10-15* initial but still hit the usual 36* max adv
05-22-2007, 05:10 PM
#5
Senior Member
Thread Starter
iTrader: (2)
Join Date: Feb 2007
Location: anderson ,sc
Posts: 805
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 formula/00 z28
Engine: carbed 350/ls1
Transmission: 700r4/ a4
Axle/Gears: 3.23 posi/ 3.73 posi
Re: losses power over 4000 rpm
ok i cant get the timing down i tryed! i need to tune the vac adv thing on the dist. its pulling 35 deg. adv on 15 so it has 50 deg.total at 3000 rpm
Thread
Thread Starter
Forum
Replies
Last Post
theshackle
Tech / General Engine
4
09-17-2020 08:26 AM
