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Discussion Starter · #1 ·
Hi guys this is my first post been doing tons of reading and research so I want to share what I have and what I would like to do. Lots of great info on here and thanks in advance for any and all input from you.

I have a 1973 Lincoln 460 that has been bored .030 over and has flat top pistons, it has stock D3 heads, Hedman Elite headers, petronix electronic upgrade in the dizzy, edelbrock performer intake, edelbrock 750 cfm carb, and the cam is a crane H-272-2 which has a lift of 518 intake and 513 exhaust, @ .050 the duration is 216* intake and 228* exhaust if i missed anything on the cam let me know as it is all new to me, also the timing chain is straight up set.

So my assumption is that I am pushing around 275 to 300 HP and really if I could get to 400-425 I would be pretty happy so what I am think of doin is the following.

1 Edelbrock Performer RPM intake
2 either portiing my D3 heads(this is much cheaper)
3 If I have to spend money on heads I might as well buy the edelbrock rpm heads 60679 casue the D0ve heads where I am would be about 1200 to 1500 ported and ready to go.

What do you guys think? I am about right when I say 275 to 300 HP and could I achieve what I want with just porting what I have and changing my manifold(low budget option) Heads and roller would set me back approx $2700 with shipping and exchange..

Thanks Again D
 

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i am not a engine machinist or anything other than a junkyard patch mechanic. so with that disclaimer> leave the intake alone and spend the dough on zero decking the block. your build with the addition of edlebrock heads is spot on with what i have. i expect 425hp. fwiw bob
 

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Discussion Starter · #3 ·
i am not a engine machinist or anything other than a junkyard patch mechanic. so with that disclaimer> leave the intake alone and spend the dough on zero decking the block. your build with the addition of edlebrock heads is spot on with what i have. i expect 425hp. fwiw bob

Thanks for the input but my engine is built already and in my truck and if I was building it from ground up I would deck it for sure, but I don't want to tear it down to deck it. BTW Bob love the website for cars by Carl would love to just order an engine built, maybe one day.

Thanks D
 

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What kind of truck? Is it a tow vehicle or a street rod? Trans, gearing, tire size? Header size?

I'd swap the intake first since it's an easy afternoon project. A cast iron SCJ or performer RPM would be good choices. See how that feels for a while. Then, yes, have the exhaust side of the heads max ported. Either get yours done, or buy a set ready to go from a forum member. Small chamber heads, like C8,9's, D0's would push your compression too high with flat top pistons (11:1). If you were OK running a race gas blend, it would really wake the motor up however. The cam should be good to 365HP give or take. Pick up another 25HP+ with a cam around 10 degrees larger in the .550 lift range. Other things to consider then though. Probably not worth the hassle depending on intended usage.
 

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Discussion Starter · #5 · (Edited)
What kind of truck? Is it a tow vehicle or a street rod? Trans, gearing, tire size? Header size?

I'd swap the intake first since it's an easy afternoon project. A cast iron SCJ or performer RPM would be good choices. See how that feels for a while. Then, yes, have the exhaust side of the heads max ported. Either get yours done, or buy a set ready to go from a forum member. Small chamber heads, like C8,9's, D0's would push your compression too high with flat top pistons (11:1). If you were OK running a race gas blend, it would really wake the motor up however. The cam should be good to 365HP give or take. Pick up another 25HP+ with a cam around 10 degrees larger in the .550 lift range. Other things to consider then though. Probably not worth the hassle depending on intended usage.
The truck is a 1964 F100 hotrod with a C6 trans, stage 2 shift kit, B&M megashifter, gearing currently 3.00, Tires 225 60 15, headers are 1-3/4 tubes to 3" collectors, which i do enjoy tearin it up a bit with so more would be better. I wouldn't mind changing the cam that is an easy swap out as well. Definitely concerned about the whole not being able to run premium thing thought. Maybe I could get the heads milled, what would that do to my intake though would that then have to be milled as well?

Thanks for the input!

D
 

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The truck is a 1964 F100 hotrod with a C6 trans, stage 2 shift kit, B&M megashifter, gearing currently 3.00, Tires 225 60 15, headers are 1-3/4 tubes to 3" collectors, which i do enjoy tearin it up a bit with so more would be better. I wouldn't mind changing the cam that is an easy swap out as well. Definitely concerned about the whole not being able to run premium thing thought. Maybe I could get the heads milled, what would that do to my intake though would that then have to be milled as well?

Thanks for the input!

D
Sounds like a good candidate for a set of 95cc Edelbrock's, Performer RPM, and custom cam from one of the forum guys.

I'm not an expert, but my machinist took an equal amount of material from the deck and intake sides of my D0VE's. That way, I could switch intakes without a fitment issue.
 

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Discussion Starter · #7 ·
Sounds like a good candidate for a set of 95cc Edelbrock's, Performer RPM, and custom cam from one of the forum guys.

I'm not an expert, but my machinist took an equal amount of material from the deck and intake sides of my D0VE's. That way, I could switch intakes without a fitment issue.
So if I understand correctly I should stay with a 95cc because of my flat top pistons and being Bored out, so that my compression doesn't get to high and cause me to have to use a race gas blend. I understand the milling deal with the heads and the intake side that way I could get my compression up but not too much where it cause me to have to use a super high octane fuel. Who does custom cams in the forum are there vendors?

Thanks again for the input and ideas I have been learn tons!

D
 

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Surprised nobody said it yet, but the cheapest power upgrade is to make sure your timing chain set is an earlier straight up set and not the retarded set that come in most rebuild deals.
 

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I would have larger valves installed in the heads and "bowl port" them.
If the heads didn't need anything else, (has some bad guides, needs some seats or are warped and need milling, etc), that job shouldn't be more than $600.00 US to have done to them.
 
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