difference between 5.0 HO and reg 5.0

[1988_gt_mustang]

Sry for the noob question but i was just curious what is the difference between a regular 5.0 and a 5.0 HO engine?

 

[aleborjas]

heads, pistons, cam, valve springs, intake, tb, and mini headers jeje

 

[grn92conv]

I'm thinking that 5.0s with the old 302 firing order were non-HO. The 5.0 with a 351W firing order got the HO label.

 

[Roland69]

Roller block

 

[gunmetal5.0]

hi this firing order thing is useful. i took out a 5.0 from my 87 and put in a 86 h.o. what is the firing order for each? thanks

 

[94_Teal_GT]

H.O. FIRING ORDER 1-3-7-2-6-5-4-8
S.O. FIRING ORDER 1-5-4-2-6-3-7-8

'86 and up S.O. are roller engines (at least according to Autozone)

 

[68stang351]

H.O. FIRING ORDER 1-3-7-2-6-5-4-8
S.O. FIRING ORDER 1-5-4-2-6-3-7-8

'86 and up S.O. are roller engines (at least according to Autozone)

Sounds about right, I've owned a non-H.O. roller, and have come across several more

 

[kornchild4life]

Can't you make a non ho-302 into a 302 ho? just gotta change a few parts around no ?

 

[Foxfan88]

ya the heads and roller cam are the biggest difference. the HOs are like 40-50 horse over non HO

 

[Roland69]

My friend made his non H.O a H.O in his ford truck

 

[grn92conv]

Roller block

The '82GT (flat tappet cam turd) had a HO 5.0 that was non roller. When Ford gave the HO label, was when they swapped to the 351w firing order for 302s. It might have been coincidence that Ford gave the 302 a HO label, at the same time they swapped the firing order, but no 5.0 HO has the old 302 firing order and no non-HO 302 has the HO firing order.

ya the heads and roller cam are the biggest difference. the HOs are like 40-50 horse over non HO

There have been what... 3 different heads used in 5.0 HO engines since '82 and at least as many cam changes

 

[Foxfan88]

The '82GT (flat tappet cam turd) had a HO 5.0 that was non roller. When Ford gave the HO label, was when they swapped to the 351w firing order for 302s. It might have been coincidence that Ford gave the 302 a HO label, at the same time they swapped the firing order, but no 5.0 HO has the old 302 firing order and no non-HO 302 has the HO firing order.

There have been what... 3 different heads used in 5.0 HO engines since '82 and at least as many cam changes

ya ur right, i was narrowing my thinking, i was thinking of the 86-up EFI roller engines vs earlier motors.

 

[jrichker]

Keep in mind that the computers are different between HO and non HO engines to accomodate the different firing order.