Re: 502 Build Up
 

Besides changing the fuel pump to an electric one what else do i need to change with this 1988 454 to the new 502?
flywheel?
starter?
oil pan?
carb suggetions (i am thinking 800 cfm holley)
anything else?

thanks guys for the input!!

Re: 502 Build Up
 

ttt

Re: 502 Build Up
 

Thanks guys for all the useful info. It just came offf the dyno today and made 561hp.Not too bad for $1400.00 edelbrock oval port heads (out of the box)

Re: 502 Build Up
 

I did the same swap 5 years ago 89 454 magnum's to "Truck" crate 502 HO's.You will need a flywheel to suit the 502,the balance is different.I actually put Weiand 177 superchargers on the 502's.Dynoed at 540HP.Still running strong.The ZZ502 short is the same as the 502HO.The difference is in the compression ratio which comes from the alloy heads on the zz.Do you have an idea for an oil cooler yet?I would use your existing distributor with a crane ignition.

Re: 502 Build Up
 

What jetting did you use?

Re: 502 Build Up
 

where does HP and TQ peak at

Re: 502 Build Up
 

TYERFRYER,
Do you have the cam specs you used with the Edelbrock heads?

Re: 502 Build Up
 

I have two custom ground roller cams That only have 6 hours run time on them if any one needs them.They are billet cores and were ground by RMBuilder here on the site.

Here was my build
502- 9.5 comp.
Edelbrock Aluminum heads
Revolution marine manifolds
850 carb.

Motors ran great and had great mid range and perfect manners at the dock.PM me if interested.

Thanks Nordic95

Re: 502 Build Up
 

looks like you achieved your goal...congrats...:drink:

details please; inquiring minds need to know

Re: 502 Build Up
 

crane 731 cam
crane springs & roller lifters
gil exhaust
800 holley
msd billet dist & ignition
edelbrock rpm air gap intake
i will check on the jetting but it was very close to its out of the box calibration.