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Mark 8 Short Block PI heads

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Discussion starter · #21 ·
This I know. But one gallon is fine for summer. (It gets over 100 on a regular basis)
 
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#22 ·
What is needed to make the swap work? Different timing cover? Or does everything from the 2v parts all just swap directly over. Found a cheap mark 8 short block just want to know if I need to outsource any parts
 
Discussion starter · #23 ·
PI head and 2v timing cover. It's basically a 2v with an aluminum block and high comp pistons.
 
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#26 ·
Mr. Red Pony said:
This I know. But one gallon is fine for summer. (It gets over 100 on a regular basis)
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Im not far from you bud. Get a 160* Thermostat and you will be fine...

---------- Post added at 08:55 PM ---------- Previous post was at 08:53 PM ----------

BigJohnson03 said:
hmm tempting that it all switches over. Compression wizzes what would my compression be with a 38cc head? And wonder if id have ptv issues with a cms stage 3 cam and tf heads
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Compression with your TF 38cc head will be around 12.5:1. This combo with a nice cam deisgned for it will make for some nice nice numbers. I would expect in the upper 300s easy to the wheels.

---------- Post added at 08:56 PM ---------- Previous post was at 08:55 PM ----------

1996 GT said:
It will have the same clearance as any other 2v.

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Not entirely true. The TF heads offer a better valve placement and angle when compared to conventional style PI heads. He can get away with a lot more cam with no Valve relief when compared with PI heads. Stage 3 cams will be fine. But you need to degree them and check it.
 
Discussion starter · #27 ·
160 it is. I was crossed between a 160 or 180. I have a new mishimoto radiator coming to. That should help a lot.

Btw I got my 4v today. I didn't realize how many miles it had. 239k. I will for sure re-ring it. And most likely put new bearings in too. Is there any market for the top end on this thing?
 
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#28 ·
Your stock radiator will do fine I was making almost 800hp on a stock cooling system in my 99 GT. If you haven't ordered the radiator yet, dont. put the money else where. Just trying to help.

Yeah. that is a few miles...A ring job wouldn't hurt. Bearings would be fine. Get the A series FM I talked about above.

Top end? Like cams? Heads? Intake?
 
#29 ·
NeverEnuff said:
Im not far from you bud. Get a 160* Thermostat and you will be fine...

---------- Post added at 08:55 PM ---------- Previous post was at 08:53 PM ----------



Compression with your TF 38cc head will be around 12.5:1. This combo with a nice cam deisgned for it will make for some nice nice numbers. I would expect in the upper 300s easy to the wheels.

---------- Post added at 08:56 PM ---------- Previous post was at 08:55 PM ----------



Not entirely true. The TF heads offer a better valve placement and angle when compared to conventional style PI heads. He can get away with a lot more cam with no Valve relief when compared with PI heads. Stage 3 cams will be fine. But you need to degree them and check it.
Click to expand...
I was talking about the botton end though, NPI, PI, 4v, they all have the same deck height. For 4.6's at least.

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Discussion starter · #30 ·
NeverEnuff said:
Your stock radiator will do fine I was making almost 800hp on a stock cooling system in my 99 GT. If you haven't ordered the radiator yet, dont. put the money else where. Just trying to help.

Yeah. that is a few miles...A ring job wouldn't hurt. Bearings would be fine. Get the A series FM I talked about above.

Top end? Like cams? Heads? Intake?
Click to expand...
My buddy gave me a cracked mishimoto radiator for free and I managed to get it warrantied. Cost $27 to ship.

Yes top end as in heads intake and cams, and even timing cover. Like is it work anything? I want to trade/sell it for stuff for the build.
 
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#33 ·
1996 GT said:
I was talking about the botton end though, NPI, PI, 4v, they all have the same deck height. For 4.6's at least.

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Well yes...but deck height doesn't dictate PTVC. Comp height of the pistons and cam profile and ICL dictate that. But I see what you are saying..

---------- Post added at 09:47 PM ---------- Previous post was at 09:45 PM ----------

BigJohnson03 said:
Ill be running on e85 so might make some good power for a na 2v. Gonna check out the motor today
Click to expand...
Nice. That will make for a nice combo. Def post up numbers when you get it done. Get ahold of NA SVT for some cam specs. I bet I can get close, but he is more knowledgable and better at it than I am.
 
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