Stock heads with a 408???
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From: Naperville, IL
Stock heads with a 408??? I searched and couldn't come up with any answers.
I am putting together a motor for my new project. In my currrent car I hve a stock short block with AFR205's and a 224/224 114 and it is a verynice setup. For this car I want more.
I am most intersted in low and midrange power, top end and peak numbers are not all that important to me. I am much more interested in driveability.
The question is can I use a set of stock heads on a 408 and what would be the smallest cam I can use. This will be a M6 car.
I am hesitant to get heads to keep the costs down, at least initially.
Thanks for any info.
I am putting together a motor for my new project. In my currrent car I hve a stock short block with AFR205's and a 224/224 114 and it is a verynice setup. For this car I want more.
I am most intersted in low and midrange power, top end and peak numbers are not all that important to me. I am much more interested in driveability.
The question is can I use a set of stock heads on a 408 and what would be the smallest cam I can use. This will be a M6 car.
I am hesitant to get heads to keep the costs down, at least initially.
Thanks for any info.
a good set of heads will probably pick you up power everywhere with a stroker motor. some people have used the stockers on a few 408s and been in the 46x to 47x range in rwhp but i can't remember the tq.those afr 205s in a 408 with something in the 22x/23x range would be a tq monster.
Originally Posted by slow trap
a good set of heads will probably pick you up power everywhere with a stroker motor. some people have used the stockers on a few 408s and been in the 46x to 47x range in rwhp but i can't remember the tq.those afr 205s in a 408 with something in the 22x/23x range would be a tq monster.
Brandon
Based strictly on airflow, if you are putting heads that are designed to feed a 346ci engine up to 6000 rpm on a 408ci engine, you shouldn't expect it to perform very well after 5000 rpm. Proper valve events would enhance that somewhat.
It should work if you are dead set on a lower rpm range, but you'll probably gain power everywhere with a decent set of ported 243 or 317 heads.
It should work if you are dead set on a lower rpm range, but you'll probably gain power everywhere with a decent set of ported 243 or 317 heads.
