Vin "T" intake swap.

[74Spit]

Ok, I have searched the site for hours and have not found a definitive answer.
I have a 3.1 Vin T long block. It is a FWD block I needed for the starter location, but it is going into a RWD car. I would like to put a small port 3100 manifold set on it. This is so I can point the throttle body to the front of the engine. I have no firewall clearance with a rear facing MPFI set up with the non-symetrical bolt pattern.
My question is will a low flow 3100 (striped) lower manifold bolt to the heads? I am not looking for more power or flow.
When the engine is done I will probibly use a megasquirt 2 on it as the ECU. I will not be using a power steering pump or the FWD engine mounts.
Checking here and other sites I have seen the heads on the Vin T listed as 88-90 only and also as 90-97. I am confused.

[bob442]

wait what are you building and going into what?

[LeftVentricle]

wait what are you building and going into what?

Well, judging by his name, I'd wager it's going into a 1974 Spitfire.

[robertisaar]

if you're willing to swap the heads on up:

http://www.domesticcrew.com/660/hybrid.html

[74Spit]

Yes, it's going into a Triumph Spitfire 1500. It will have T5 tranny behind it.

So, it looks like I can change to gen 3 heads and use the 3100 intake or I can go to a Fiero or Camaro MPFI set up.

Any idea of which set-up has the lowest height from the crank centerline?

[bob442]

i wonder if you could rework a harness from a OBD2 car instead of going with a megasquirt. or even a obd1

[robertisaar]

i wonder if you could rework a harness from a OBD2 car instead of going with a megasquirt. or even a obd1

the harness itself, you could use from either, but the OBD1 would be a lot less work. good luck running it on OBD2 without a second crank sensor or cam sensor though...

it's not like there are any deficiencies with OBD1.

[Superdave]

Yes, it's going into a Triumph Spitfire 1500. It will have T5 tranny behind it.

So, it looks like I can change to gen 3 heads and use the 3100 intake or I can go to a Fiero or Camaro MPFI set up.

Any idea of which set-up has the lowest height from the crank centerline?

I'd use the gen3 top end but a RWD timing cover and accessory brackets. You'll be able to flip the lower intake around to work well in this application.


all the top ends are within 1" or so of each other in total height.

[74Spit]

Here is a link to an outside site I came across. The pics explain it all.

http://www.thirdgen.org/techboard/v6/434315-more-top-end-comparisons.html

If I do not go the Megasquirt route I will probibly use a 7727 ECU and keep the wiring in the engine compartment.

[74Spit]

Huh. I just realized I am thinking of this wrong. I was thinking of reversing the plenum. Then the asymetrical 3.1 MPFI plenum will not work. I should leave the plenum alone and reverse the lower intake.
Does anyone know if the MPFI lower can flipped end for end?

I know the gen 2 stuff isn't as good as the SFI stuff. In a Spitfire more torque than the MPFI has could cause problems with the frame and would need a major rear end change. Stock a Spitfire had 70 horses and weighs in at around 1780 lbs. Suprisingly, I am told a 660 and T5 adds only 20 lbs over the original 4 banger and tranny.

[Superdave]

the torque difference between the gen2 and gen3 isn't much.. maybe 20 ft-lbs. it's worth about 40 extra HP though.

[geoffinbc]

You wont want the iron head stuff. It would mean you have to change heads and then you would have to change pistons to suit since compression with the FWD dished pistons and the iron heads open chambers would result in compression less than 7.5:1.

You can reverse any of the intakes you want. All the heads are symmetrical and all the intakes will reverse. This will be more desirable in your case since you will want the thermostat housing to be facing the front anyway.

[74Spit]

You wont want the iron head stuff.
You can reverse any of the intakes you want. All the heads are symmetrical and all the intakes will reverse. This will be more desirable in your case since you will want the thermostat housing to be facing the front anyway.

Thanks BTY, The intake info is encouraging. The Vin "T" has the aluminum heads with the round exhaust ports. It is a Beretta & Corsica engine.
I do like the old iron heads though. The 2.8l Fiero's run forever.

[jimbegor]

I have a 95 3.1 in a 59 bugeye sprite you can swap the whole intake use timeing cover from a rwd 2.8 s10 s10 2.2 5 speed the starter is on the left side and trany is not as wide I wired my engine OBD1 using 93 lunmia wireing diagram