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What did you do for your Terminator today?
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<blockquote data-quote="tt335ci03cobra" data-source="post: 17034913" data-attributes="member: 68944"><p>Thanks!</p><p></p><p>We had Livernois build a 4.6 aluminum cammer block into sleeved/coated 5.3 BB/stroker. Used gt500 heads with a full race port and MMR turbo cams. Intake is an fr500c with the 8.2” runner plumes. It’s been running with twin 62/65 comp turbos but I’ve gotten older and to slow down a bit and add drivability, we’re putting in twin 58’s and a Holley efi. The Turbos will be less productive, but the Holley should be much more accurate and let us rev cleanly to 8-8500rpm which it kinda wants.</p><p></p><p>We did 813whp on pump gas 10-11psi, 1070whp on 20psi with booster and 1208whp on 30psi.</p><p></p><p>The heads and cam make a huge difference. It lowers the pressure in the motor and moves everything out much better. It doesn’t make sense until you think about the flow restriction and ultimate cfm movement. If you take a big blower car on 25psi and do heads/cam, it’ll pick up 40-50whp, but the boost will fall to 22-23psi iirc +/-. </p><p></p><p>Blower though can force the air through, turbos are very sensitive to head and more so exhaust restriction. It’s why turbo cars see so much outta head/cam work while it almost seems like lost money on a blower car. But, it’ll run much cooler and more consistently on a blower car, since it has less restriction. Heat comes from stress and pressure as we all know so I still recommend atleast porting heads and doing a 98 cobra cam setup on a blower car if it’s not in the budget to buy racier grinds.</p><p></p><p>I don’t think it’ll make much more power revving to 8-8500rpm but it should be pretty flat line/not fall off. If I can stretch out to 8500 on kill mode, it would make the car much faster. For the street I can short shift at 6k and still walk away pretty hard from bolt on hellcats and the like but I want the revs for the really fast stuff. I’d like to get down to 3250lbs with a cage, but keep stereo, and run a nice light sport seat, etc. I think 1000-1200whp at 3250lbs might be enough to keep up with 1300-1400whp heavy weight cars like turbo newer gt500’s, hellcats and and zl1’s.</p><p></p><p>15-20 years ago 1000whp was rare and ridiculously fast but today it’s like 1500-2000whp+ is the new cool kid neighborhood.</p><p></p><p>When this motor blows, I’m doing gen 2 coyote with supporting mods and letting it eat. It would require a lot of financial ease and green pastures for me to build a motor like this again. This was honestly a huge expense and coulda been way easier to do a gen 2 coyote build but we put this together in 2015/16. It’s held up good though but the car rarely gets driven.</p></blockquote><p></p>
[QUOTE="tt335ci03cobra, post: 17034913, member: 68944"] Thanks! We had Livernois build a 4.6 aluminum cammer block into sleeved/coated 5.3 BB/stroker. Used gt500 heads with a full race port and MMR turbo cams. Intake is an fr500c with the 8.2” runner plumes. It’s been running with twin 62/65 comp turbos but I’ve gotten older and to slow down a bit and add drivability, we’re putting in twin 58’s and a Holley efi. The Turbos will be less productive, but the Holley should be much more accurate and let us rev cleanly to 8-8500rpm which it kinda wants. We did 813whp on pump gas 10-11psi, 1070whp on 20psi with booster and 1208whp on 30psi. The heads and cam make a huge difference. It lowers the pressure in the motor and moves everything out much better. It doesn’t make sense until you think about the flow restriction and ultimate cfm movement. If you take a big blower car on 25psi and do heads/cam, it’ll pick up 40-50whp, but the boost will fall to 22-23psi iirc +/-. Blower though can force the air through, turbos are very sensitive to head and more so exhaust restriction. It’s why turbo cars see so much outta head/cam work while it almost seems like lost money on a blower car. But, it’ll run much cooler and more consistently on a blower car, since it has less restriction. Heat comes from stress and pressure as we all know so I still recommend atleast porting heads and doing a 98 cobra cam setup on a blower car if it’s not in the budget to buy racier grinds. I don’t think it’ll make much more power revving to 8-8500rpm but it should be pretty flat line/not fall off. If I can stretch out to 8500 on kill mode, it would make the car much faster. For the street I can short shift at 6k and still walk away pretty hard from bolt on hellcats and the like but I want the revs for the really fast stuff. I’d like to get down to 3250lbs with a cage, but keep stereo, and run a nice light sport seat, etc. I think 1000-1200whp at 3250lbs might be enough to keep up with 1300-1400whp heavy weight cars like turbo newer gt500’s, hellcats and and zl1’s. 15-20 years ago 1000whp was rare and ridiculously fast but today it’s like 1500-2000whp+ is the new cool kid neighborhood. When this motor blows, I’m doing gen 2 coyote with supporting mods and letting it eat. It would require a lot of financial ease and green pastures for me to build a motor like this again. This was honestly a huge expense and coulda been way easier to do a gen 2 coyote build but we put this together in 2015/16. It’s held up good though but the car rarely gets driven. [/QUOTE]
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