1982 head help
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Joined: Nov 2012
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From: greenfield indiana
1982 head help
i am trying to figure out what heads to put on my 82 crossfire i want to keep the crossfire intake. i would like to go with aluminum heads but im not sure what heads to go with. i want the best performance i can get out of them just not sure what to look for with the numbers? any help would be very helpful
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From: greenfield indiana
Le Mans Master
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From: columbia city in
okay if you want to get about 300hp you need to think about a better cam and porting out the intake.Thats not hard but it takes time .There are several manufactures and they all have good heads for what you want .I would check out summit for best price.But before you put any money in this motor I would do a compression check first .how many miles are on the motor?
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Joined: Nov 2012
Posts: 52
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From: greenfield indiana
okay if you want to get about 300hp you need to think about a better cam and porting out the intake.Thats not hard but it takes time .There are several manufactures and they all have good heads for what you want .I would check out summit for best price.But before you put any money in this motor I would do a compression check first .how many miles are on the motor?
Last edited by bensons82; Mar 1, 2016 at 11:09 PM.
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Burning Brakes
Joined: Jul 2015
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From: Austin TX
Yes, that's net. The reason I asked is that I'm not sure the motor is all that far away from the performance level the OP asked about. 300 HP gross from a 350 SBC is pretty much a base motor IMO. Given his stated purpose for this (which is not too different than my own), he might see more improvement by changing out the rear. Moving from the factory 2.87 to something like a 3.55 or 3.70 would be night and day for city driving. My '82 already has good acceleration in 1st at full throttle. Where it fails is 2nd gear and up. 25-30% more leverage at the rear wheels would resolve that.
Last edited by 454Luvr; Mar 2, 2016 at 08:49 AM.
Le Mans Master
Joined: Jul 2000
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From: columbia city in
Instructor
Joined: Dec 2009
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From: USA
I installed Trick Flow® Super 23® 175 Cylinder TFS-30300002. If I remember correctly, it raises compression to almost 10.5 to 1. I also installed the renegade intake, comp cams CC 12-249-4 (XE249H), roller rockers (1.5), hypertech chip and 3.73 gears. All that finally woke up the vehicle. Comp Cams engine modeler shows it as a tad over 350hp with 403 lbs torque. With 1.6 rockers it shows it at 389hp with 412 torque (but it moved the power curve much higher and didn't make sense to me as I don't race it).
Melting Slicks
Joined: Jun 2011
Posts: 2,096
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I installed Trick Flow® Super 23® 175 Cylinder TFS-30300002. If I remember correctly, it raises compression to almost 10.5 to 1. I also installed the renegade intake, comp cams CC 12-249-4 (XE249H), roller rockers (1.5), hypertech chip and 3.73 gears. All that finally woke up the vehicle. Comp Cams engine modeler shows it as a tad over 350hp with 403 lbs torque. With 1.6 rockers it shows it at 389hp with 412 torque (but it moved the power curve much higher and didn't make sense to me as I don't race it).
Instructor
Joined: Dec 2009
Posts: 199
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From: USA
Stock exhaust manifold and exhaust (with the exception of high flow converter - Magnaflow Catalytic Converter 36440). I live in California so I'm seriously restricted.
Last edited by rmm82; Mar 2, 2016 at 01:09 PM.
Melting Slicks
Joined: Jun 2011
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Sure I understand, mine is stock manifolds (tiny) with CC true duals not cats. I would love to find someone that could replicate them with bigger primaries. Know of anyone?
Instructor
Joined: Dec 2009
Posts: 199
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From: USA
http://www.thecubestudio.com/Crossfi...yBalancing.htm
Race Director
Joined: Jul 2015
Posts: 13,082
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From: SW Florida.
The ecu can only take so much. You need to get the ecm reprogrammed. I think it is replace or burn the eprom on top like the tbi box it is. Yup. Here is the preferred ecm. https://www.ebay.com/itm/1227747-Eng...pe!19061!US!-1.
Last edited by derekderek; Mar 23, 2019 at 07:39 PM.