engine rebuild help

LxMustangRacer · 02-05-2004, 05:12 PM

Ok guys, here's my current combo to be installed. Vortech S-trim 12 lbs boost w/ powerpipe, downs box upper intake, ported gt40 lower intake, bbk 75 mm throttle body, 75mm pro-m blow through maf, Motorcraft 36# fuel injectors, going on my 94 GT with ~90K on the odometer. The car's really only going to see street duty. My friends helping me do the install and rebuild the engine. I hadn't planned on doing anything else for a while but he's pushing for a cam change and 160 degree thermostat. Should I change cams considering I'm still going to be running the stock heads, I really don't have the cash for new heads, or a cam for that matter. And I heard that cooler thermostats promote more engine wear on cars that really don't need it. -Phil

QuantumMotorsports · 02-05-2004, 09:17 PM

As for the thermostat, it's probably not going to make a difference. As for the cam, are you pulling the motor and rebuilding it? If so, I would say do as much as you can while the motor is out of the car. If the motor is staying in the car, you could wait and do a cam and heads later. The supercharger is going to definately make you pleased with your new setup, a cam will simply help optimize it. I'd wait on the heads and cam as long as you're not pulling the motor.

Dark_5.0 · 02-06-2004, 10:08 AM

A 160 T-stat is not beneficial on a street car. It tricks the ecu into running rich.

Run a 180 T-stat.

And a cam wouldnt help much with stock heads anyways. just get some 1.7 RR to give your stock cam more lift.

LxMustangRacer · 02-06-2004, 01:10 PM

If I do upgrade my heads it'll be a while down the road, not for a few years probably. The motor probably will be pulled for the rebuild though, so that's why he wants to get as much done as possible rather than having to pull it again (not sure I plan on it but he thinks I would). I don't want to run the 160 thermostat but his auto teacher convinced him I'll be overheating without it. So maybe look into roller rockers, and forget the cam as I will not be upgrading my heads?

02-05-2004, 05:12 PM	#1
LxMustangRacer Registered Member Join Date: Mar 2002 Location: Allendale, Mi Posts: 137	engine rebuild help Ok guys, here's my current combo to be installed. Vortech S-trim 12 lbs boost w/ powerpipe, downs box upper intake, ported gt40 lower intake, bbk 75 mm throttle body, 75mm pro-m blow through maf, Motorcraft 36# fuel injectors, going on my 94 GT with ~90K on the odometer. The car's really only going to see street duty. My friends helping me do the install and rebuild the engine. I hadn't planned on doing anything else for a while but he's pushing for a cam change and 160 degree thermostat. Should I change cams considering I'm still going to be running the stock heads, I really don't have the cash for new heads, or a cam for that matter. And I heard that cooler thermostats promote more engine wear on cars that really don't need it. -Phil __________________ 1994 Mustang GT Convertible

02-05-2004, 09:17 PM	#2
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	As for the thermostat, it's probably not going to make a difference. As for the cam, are you pulling the motor and rebuilding it? If so, I would say do as much as you can while the motor is out of the car. If the motor is staying in the car, you could wait and do a cam and heads later. The supercharger is going to definately make you pleased with your new setup, a cam will simply help optimize it. I'd wait on the heads and cam as long as you're not pulling the motor. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

02-06-2004, 10:08 AM	#3
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	A 160 T-stat is not beneficial on a street car. It tricks the ecu into running rich. Run a 180 T-stat. And a cam wouldnt help much with stock heads anyways. just get some 1.7 RR to give your stock cam more lift. __________________ 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

02-06-2004, 01:10 PM	#4
LxMustangRacer Registered Member Join Date: Mar 2002 Location: Allendale, Mi Posts: 137	If I do upgrade my heads it'll be a while down the road, not for a few years probably. The motor probably will be pulled for the rebuild though, so that's why he wants to get as much done as possible rather than having to pull it again (not sure I plan on it but he thinks I would). I don't want to run the 160 thermostat but his auto teacher convinced him I'll be overheating without it. So maybe look into roller rockers, and forget the cam as I will not be upgrading my heads? __________________ 1994 Mustang GT Convertible

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