Let's play guess my new motor's horsepower!!

skiwesser · 11-22-2005, 03:36 AM

Okay, stock block .030 overbore, new eagle rods, forged K.B. pistons, Trick Flow #1 Cam (221/225 dur. @.050,.499/.510 lift), AFR 165's, Typhoon intake (port matched to heads),73mm C&L meter, 24# injectors, 65mm TB, 1 3/4 longtubes w/3 chamber F.M. cat-back. T-5 in good shape for now, will a tremec bolt up to a stock bellhousing?

I'm hoping for 350-360??
Where should I start with fuel pressure and timing (93 octane ofcourse)
Once it is broken in I'll be spraying it with 100-150 shot

What spark plugs should I use? AFR says Autolite 3924, starting range?

Any input welcome and appreciated.
Thanks
Wes

~The Jester~ · 11-22-2005, 08:05 AM

My desktop dyno "guessed" 430hp at the flywheel. Need more info, such as compression ratio? I have to look up the exact specs on that cam later too.

Falcons Talon · 11-22-2005, 08:13 AM

Wow. I would guess about 310 to the wheels.

Here's why.

I pulled 325 rwhp w/ this combo

I have a 351 +.060 over
AFR 185s
GT40 intakes (I know, but I like the look)
65 mm tb (already upgraded to 75 mm)
1 3/4 LT's
73 c&l meter
87 octane at 12* timing (now at 17* w/93 octane)
30 lb injectors

Dark_5.0 · 11-22-2005, 01:18 PM

295-305 RWHP

My car made 301RWHP and 330RWTQ

skiwesser · 11-22-2005, 07:48 PM

Heads are 58cc, pistons are flattops (2-4cc eyebrows I think, I'll have to check to be sure all stuff still at mach. shop), fel-pro 1011-2 gaskets .049 compressed I believe.

Unit 5302 · 11-22-2005, 08:32 PM

I think that'll put you around 10.25:1 CR.

Stock combustion chambers are 64cc and the pistons are 5.5cc relief. Add in the fact you're running a 306 instead of a 302, and it puts you up there by pure estimation.

Hozer 88GTConv · 11-22-2005, 10:34 PM

I started w/ 40 psi and set the timing at 18 degrees for a total advance of 34.
MSD box/ignition might help you get a couple more hp, but I agree with the 300-305 rwhp estimate. Especially if you keep the timing down.

good luck...

skiwesser · 11-22-2005, 10:35 PM

Here is info on pistons:
Piston Style: Flat
Compression Distance (in): 1.608
Dish Volume (cc): 4.80
Valve Reliefs: Two
Does that mean 4.80cc X 2?

Compression Distance (in): 1.608 Does this number come in to play here?
I want to know pretty close to my comp. ratio and have no idea how to figure,probably couldn't with a formula!!
Thanks guys!!
P.S. I have a crane Hi-6 and blaster coil.

~The Jester~ · 11-23-2005, 08:50 AM

Depending on who's formula you use, I came up with everywhere from 9.06:1, 10.18:1, and 10.83:1 So like said before 10.25:1 is a good place to figure it at.

That's STATIC compression ratio too, don't forget that. Dynamic is gonna be a bit different.

~The Jester~ · 11-23-2005, 09:04 AM

OK Ski, found the specs I needed, dynamic compression is about 10:01:1 with that cam, so you're still in GOOD pump gas territory.

I'm not familiar with throttle bodie sizes and such, or that intake. I "guessed" the TB flow at 660 CFM, and that intake as a single plane. If I'm wrong, lemme know.

Here's what Desktop Dyno had to say:

skiwesser · 11-23-2005, 10:13 PM

Cool, Thanks Jester but according to the sources I have a 65mm TB flows 616cfm so numbers will be down a little, but I think I've got the combo I wanted and I feel good about the cam,intake and heads working well together??
I just need to nail down a sound baseline on fuel pressure And timing.

The aluminum heads allow you to run a bit more timing than iron heads??

11-22-2005, 08:05 AM	#2
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: Let's play guess my new motor's horsepower!! My desktop dyno "guessed" 430hp at the flywheel. Need more info, such as compression ratio? I have to look up the exact specs on that cam later too. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

11-22-2005, 08:13 AM	#3
Falcons Talon T.P.M. President Join Date: May 2002 Location: Brownsville Posts: 265	Re: Let's play guess my new motor's horsepower!! Wow. I would guess about 310 to the wheels. Here's why. I pulled 325 rwhp w/ this combo I have a 351 +.060 over AFR 185s GT40 intakes (I know, but I like the look) 65 mm tb (already upgraded to 75 mm) 1 3/4 LT's 73 c&l meter 87 octane at 12* timing (now at 17* w/93 octane) 30 lb injectors __________________

11-22-2005, 01:18 PM	#4
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Re: Let's play guess my new motor's horsepower!! 295-305 RWHP My car made 301RWHP and 330RWTQ __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

11-22-2005, 07:48 PM	#5
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Re: Let's play guess my new motor's horsepower!! Heads are 58cc, pistons are flattops (2-4cc eyebrows I think, I'll have to check to be sure all stuff still at mach. shop), fel-pro 1011-2 gaskets .049 compressed I believe. __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-22-2005, 08:32 PM	#6
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Re: Let's play guess my new motor's horsepower!! I think that'll put you around 10.25:1 CR. Stock combustion chambers are 64cc and the pistons are 5.5cc relief. Add in the fact you're running a 306 instead of a 302, and it puts you up there by pure estimation.

11-22-2005, 03:36 AM	#1
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Let's play guess my new motor's horsepower!! Okay, stock block .030 overbore, new eagle rods, forged K.B. pistons, Trick Flow #1 Cam (221/225 dur. @.050,.499/.510 lift), AFR 165's, Typhoon intake (port matched to heads),73mm C&L meter, 24# injectors, 65mm TB, 1 3/4 longtubes w/3 chamber F.M. cat-back. T-5 in good shape for now, will a tremec bolt up to a stock bellhousing? I'm hoping for 350-360?? Where should I start with fuel pressure and timing (93 octane ofcourse) Once it is broken in I'll be spraying it with 100-150 shot What spark plugs should I use? AFR says Autolite 3924, starting range? Any input welcome and appreciated. Thanks Wes __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-22-2005, 10:34 PM	#7
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Re: Let's play guess my new motor's horsepower!! I started w/ 40 psi and set the timing at 18 degrees for a total advance of 34. MSD box/ignition might help you get a couple more hp, but I agree with the 300-305 rwhp estimate. Especially if you keep the timing down. good luck... __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

11-22-2005, 10:35 PM	#8
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Re: Let's play guess my new motor's horsepower!! Here is info on pistons: Piston Style: Flat Compression Distance (in): 1.608 Dish Volume (cc): 4.80 Valve Reliefs: Two Does that mean 4.80cc X 2? Compression Distance (in): 1.608 Does this number come in to play here? I want to know pretty close to my comp. ratio and have no idea how to figure,probably couldn't with a formula!! Thanks guys!! P.S. I have a crane Hi-6 and blaster coil. __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-23-2005, 08:50 AM	#9
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: Let's play guess my new motor's horsepower!! Depending on who's formula you use, I came up with everywhere from 9.06:1, 10.18:1, and 10.83:1 So like said before 10.25:1 is a good place to figure it at. That's STATIC compression ratio too, don't forget that. Dynamic is gonna be a bit different. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

11-23-2005, 10:13 PM	#11
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Re: Let's play guess my new motor's horsepower!! Cool, Thanks Jester but according to the sources I have a 65mm TB flows 616cfm so numbers will be down a little, but I think I've got the combo I wanted and I feel good about the cam,intake and heads working well together?? I just need to nail down a sound baseline on fuel pressure And timing. The aluminum heads allow you to run a bit more timing than iron heads?? __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

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