Estimate my horsepower/ Torque
Thread Starter
Instructor
Joined: Apr 2007
Posts: 205
Likes: 1
From: Knoxville TN
Estimate my horsepower/ Torque
I have accumulated most of the parts for my build and would like to know what to expect out of my setup and if i need any other parts before i get into the engine?
Setup as follows: 88 l98
Ported superram, accel base, lpe 219 cam 219/219 .560 lift,
trick flow twisted wedge heads
67cc chamber
2.02 / 1.60
190cc intake / 82cc exh ports
1.6 roller rockers, valve springs, lpe 1 3/4 headers, tpis exhaust, high flow cat
after install custom chip tune
What do you expect my rwhp and rwtq to be?
What other mods would you go ahead and do while you are in the engine?
I think it should be at leaset around 350 rwhp maybe even more with a good tune.
thanks for your replies
Setup as follows: 88 l98
Ported superram, accel base, lpe 219 cam 219/219 .560 lift,
trick flow twisted wedge heads
67cc chamber
2.02 / 1.60
190cc intake / 82cc exh ports
1.6 roller rockers, valve springs, lpe 1 3/4 headers, tpis exhaust, high flow cat
after install custom chip tune
What do you expect my rwhp and rwtq to be?
What other mods would you go ahead and do while you are in the engine?
I think it should be at leaset around 350 rwhp maybe even more with a good tune.
thanks for your replies
Last edited by shawn784; Aug 28, 2007 at 11:44 AM.
Team Owner
Joined: Oct 2004
Posts: 35,065
Likes: 0
From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Why did you go with such a big head? I am looking at basically the same mods. To maintain low end torque I will be getting 1 5/8 headers and about 60CC heads with better flow.
Any reason for the bigger headers and heads?
It is my understanding that the SR is designed for low end, the heads and headers seem to be "geared" to high end.
Why the difference? Am I thinking all wrong here?
I am going through pains to match the intake with the cam with the heads, with the headers...am I pissing in the wind?
Any reason for the bigger headers and heads?
It is my understanding that the SR is designed for low end, the heads and headers seem to be "geared" to high end.
Why the difference? Am I thinking all wrong here?
I am going through pains to match the intake with the cam with the heads, with the headers...am I pissing in the wind?
Thread Starter
Instructor
Joined: Apr 2007
Posts: 205
Likes: 1
From: Knoxville TN
got a good deal on the heads and they flow almost like a 180 or 185cc head due to their unique design
planning on eventually going supercharged and will need the lower compression.
also possibly adding nitrous and i think the lower C/R will help with that too.
i talked to trickflow and they said you i will gain around 35-45 hp and 20 tq. If it were better matched i would probably gain 40-50 and 25 tq.
thanks for the reply
planning on eventually going supercharged and will need the lower compression.
also possibly adding nitrous and i think the lower C/R will help with that too.
i talked to trickflow and they said you i will gain around 35-45 hp and 20 tq. If it were better matched i would probably gain 40-50 and 25 tq.
thanks for the reply
Team Owner
Joined: Oct 2004
Posts: 35,065
Likes: 0
From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
got a good deal on the heads and they flow almost like a 180 or 185cc head due to their unique design
planning on eventually going supercharged and will need the lower compression.
also possibly adding nitrous and i think the lower C/R will help with that too.
i talked to trickflow and they said you i will gain around 35-45 hp and 20 tq. If it were better matched i would probably gain 40-50 and 25 tq.
thanks for the reply
planning on eventually going supercharged and will need the lower compression.
also possibly adding nitrous and i think the lower C/R will help with that too.
i talked to trickflow and they said you i will gain around 35-45 hp and 20 tq. If it were better matched i would probably gain 40-50 and 25 tq.
thanks for the reply
Team Owner
Joined: Sep 2001
Posts: 62,171
Likes: 1,735
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
I dont see 350rwhp coming if you are running the lowered compression.
The heads can flow enough air though. I would also say in the 320-330rwhp range.
My opinions on other questions asked: the difference between 1 5/8" and 1.75" should be minimal and you wouldnt notice, plus the larger headers will continue to be fine should you go to 383+ ci; 190cc is on the big side for a 350, but will also carry over to a 383 should you go that route. Considering what you say TF says these heads flow, I dont see any problem with losing any low end torque, the SR gives plenty to spare.
The heads can flow enough air though. I would also say in the 320-330rwhp range.
My opinions on other questions asked: the difference between 1 5/8" and 1.75" should be minimal and you wouldnt notice, plus the larger headers will continue to be fine should you go to 383+ ci; 190cc is on the big side for a 350, but will also carry over to a 383 should you go that route. Considering what you say TF says these heads flow, I dont see any problem with losing any low end torque, the SR gives plenty to spare.
Thread Starter
Instructor
Joined: Apr 2007
Posts: 205
Likes: 1
From: Knoxville TN
how much power can the stock drive line transmission etc. and bottom end handle?
i have heard as high as 500 hp on the drive line
and bottom end can handle up to 6500 rpm and around 500 hp also
is this correct?
i have heard as high as 500 hp on the drive line
and bottom end can handle up to 6500 rpm and around 500 hp also
is this correct?
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Team Owner
Joined: Sep 2001
Posts: 62,171
Likes: 1,735
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
There is no concrete limit to what either the diff or the tranny can handle. They can each break whenever they wish. However if you keep the transmission running cool it can handle a good bit for awhile, ambiguous i know, but we just cant tell you exactly how long. The diff will probably stand up to street use for a long time, but track use will be a different story, one great hookup and it could blow, so it depends alot on the tires.
Only advice I can give to prevent it is add a transmission cooler, sooner rather than later, and dont run slicks at the track. (i'm assuming you drive an auto)
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Question for the OP: are you freshening the lower end (overbore, new rings, pistons and bearings) or are you putting these parts on a 100,000 mile short block?? This will make a small difference in power and a large difference in longevity.
(you should see somewhere in the range of 300rwhp)
Larry
code5coupe
___________
not easily impressed...