Need help matching heads to cam

[lilbowtie]

I'm talking about the rest of his combo - convertor, trans, rear, headers. 290 HP will run 13.10 in a 3300 lb car as long as the combo is right.

 

[383_GrandPrix]

I'm talking about the rest of his combo - convertor, trans, rear, headers. 290 HP will run 13.10 in a 3300 lb car as long as the combo is right.

My reply was more towards MotorHeadMike's comment as he suggested an alternate cam. Just wanted to clarify that he already has the new cam and is looking for heads.

 

[84oldsmo]

Vortec heads

Any 64cc head will go a long way.

Thanks

 

[84oldsmo]

My reply was more towards MotorHeadMike's comment as he suggested an alternate cam. Just wanted to clarify that he already has the new cam and is looking for heads.

Preciate you filling in for me I've been at work..


But yes as he stated I already have a cam and motor just trying to get a set of heads that will match my set up.. Dont want to bother motor much more than that

 

[84oldsmo]

I'm talking about the rest of his combo - convertor, trans, rear, headers. 290 HP will run 13.10 in a 3300 lb car as long as the combo is right.

I have a 700r4 trans 3.73 position rear end stock converter but read with that cam I may need a 2400 stall.. It's all going into a 84 Olds cutlass

 

[84oldsmo]

I'm talking about the rest of his combo - convertor, trans, rear, headers. 290 HP will run 13.10 in a 3300 lb car as long as the combo is right.

I have a 700r4 trans 3.73 position rear end stock converter but read with that cam I may need a 2400 stall.. It's all going into a 84 Olds cutlass

What are you planning on doing with this engine and what is the rest of your combo.

Just a weekend toy might want to show off a little absolutely no racing but when I want to stretch it out I can and won't have to worry bout falling on its face..

 

[84oldsmo]

This cam (https://www.summitracing.com/int/parts/sum-1106/overview/), plus these heads (https://www.summitracing.com/int/parts/nal-12558060/overview/) and this intake (https://www.summitracing.com/int/parts/edl-7116/overview/) and a 650cfm carb. Low-13s, high-12s. Done.

I built near this exact combo.

So if those heads will Handel the 1106 cam wouldn't they be fine with the 1105 cam?

 

[84oldsmo]

This is a pretty aggressive cam profile. You have 73 degrees of overlap, but you're not getting much lift with factory spec rockers. To get the most out of this cam I would use a higher ratio rocker arm, it will keep the same cam timing and duration but provide more lift. You will however, need to change your pushrod length to achieve proper geometry with the longer rockers. Also make sure that the springs that come on the new heads will handle the lift and ramp rates of your new cam. If your springs are not strong enough you can end up with valve float, and if your lift height gets too high for the spring you end up with coil binde.

What size pushrods you prefer and should I do 1.6 roller rockers

 

[84oldsmo]

This cam (https://www.summitracing.com/int/parts/sum-1106/overview/), plus these heads (https://www.summitracing.com/int/parts/nal-12558060/overview/) and this intake (https://www.summitracing.com/int/parts/edl-7116/overview/) and a 650cfm carb. Low-13s, high-12s. Done.

I built near this exact combo.

Would this heads heads work with the 1105 cam since they can handle the 1106 or am I missing something

 

[Bar50]

I say in the 180 to 190 cc intake runner size. Get straight plugs so they don't interfere with headers.

But, Vortec or any decent small chamber head would work with the 290 HP cam and perk the motor up. Obviously vortec heads would need some different springs and retainers to match the lift. With Blue LS2 springs and some Comp retainers they make for around .570-.580 lift on vortec heads.