Engine recommendations please
Thread Starter
Joined: May 2005
Posts: 550
Likes: 0
From: Valdosta, georgia
Engine recommendations please I read the cam guide and just confused me lol. I'm not new to engines but all the theory and new stuff I just don't know. What I have is a 98 pickup and i'm putting in a LQ4, from a 04 chevy. I'm really more concerned with torque and driveablitiy since it will mainly be a tow vehicle. I'd like to get 450ft/lbs of torque. I'm gonna be freshening it up but if possible i'd like to keep it stock. Well I'm putting new cam, springs, roller rockers in. But the intake and valves would like to keep stock. Can somebody recommend some springs and a cam for me and would it be possible to do 450 torque with a LQ4. I'd appreciate your advice guys.
I don't know about 450ft/lbs with just a cam. LQ4 has got you down on compression out of the gate. I would say mill the heads and get a custom cam spec'd that should get you close.
Last edited by BaddBird; Nov 22, 2009 at 09:40 PM.
I read the cam guide and just confused me lol. I'm not new to engines but all the theory and new stuff I just don't know. What I have is a 98 pickup and i'm putting in a LQ4, from a 04 chevy. I'm really more concerned with torque and driveablitiy since it will mainly be a tow vehicle. I'd like to get 450ft/lbs of torque. I'm gonna be freshening it up but if possible i'd like to keep it stock. Well I'm putting new cam, springs, roller rockers in. But the intake and valves would like to keep stock. Can somebody recommend some springs and a cam for me and would it be possible to do 450 torque with a LQ4. I'd appreciate your advice guys.
Last edited by BaddBird; Nov 22, 2009 at 10:24 PM.
TECH Resident
Joined: Sep 2009
Posts: 859
Likes: 2
From: Frozen Tundra, WI
Another option to bump your compression would be some 243 heads...just a thought.
Here are some cams for you to take a look at...
http://www.vincihiperformance.com/ca...s%20truck.html
If this is going to be a tow vehicle, I would go with a little smaller exhaust to maintain low RPM torque...not over 2 1/4".
Here are some cams for you to take a look at...
http://www.vincihiperformance.com/ca...s%20truck.html
If this is going to be a tow vehicle, I would go with a little smaller exhaust to maintain low RPM torque...not over 2 1/4".
Another option to bump your compression would be some 243 heads...just a thought.
Here are some cams for you to take a look at...
http://www.vincihiperformance.com/ca...s%20truck.html
If this is going to be a tow vehicle, I would go with a little smaller exhaust to maintain low RPM torque...not over 2 1/4".
Here are some cams for you to take a look at...
http://www.vincihiperformance.com/ca...s%20truck.html
If this is going to be a tow vehicle, I would go with a little smaller exhaust to maintain low RPM torque...not over 2 1/4".
Thread Starter
Joined: May 2005
Posts: 550
Likes: 0
From: Valdosta, georgia
i probably could find some 243's cheap but I thought the 317's flowed better? and would my manifold fit the 243's. The reason I was gonna put dual 2.5's on is to keep the torque low but with these motors you might be right and I might be fine with dual 3's. But yeah that was a given for me I was gonna put a double roller timing chain, better pushrods and a bearing freshen up, new rings and a quick hone. Not sure on the lifters though cause new ones are about $300 and the engine only has 45K on it, you think i'd benefit noticeably from new lifters? As far as cam's I was kind of looking at tsp the torquer v2 with 112 seperation whatcha think?
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i probably could find some 243's cheap but I thought the 317's flowed better? and would my manifold fit the 243's. The reason I was gonna put dual 2.5's on is to keep the torque low but with these motors you might be right and I might be fine with dual 3's. But yeah that was a given for me I was gonna put a double roller timing chain, better pushrods and a bearing freshen up, new rings and a quick hone. Not sure on the lifters though cause new ones are about $300 and the engine only has 45K on it, you think i'd benefit noticeably from new lifters? As far as cam's I was kind of looking at tsp the torquer v2 with 112 seperation whatcha think?
I really dont think there is any performance to be gained with a lifter upgrade more of a preventive upgrade.I think you have to use oil pump spacers with a double roller timing chain some of them reqiure grinding the timing cover.On your cam choice you need to research from what I understand that is a upper rpm cam and the name torquer is very misleading.By no means is it a 450ft/lb stomp puller. I mean you wont be shifting a tow rig at 7000rpm I would think you need the power band in the low to midrange rpms.
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