Joined
·
613 Posts
This post has a couple different intentions. Primary, is to post my planned motor specs and expectations and recieve feedback from the community. Secondary, is to recruit recommendations for suppliers for the necessary outstanding components.
The Street Sweeper name just came to me as I was trying to find a subject for this thread. Expectations include a motor that can provide enough juice so that the GT can keep up (150 -175 HP), retain at least a little bit of streetability (to get to and from cruises and the track). It must rev quickly, and run on 93 octane (the best available in the area). A 5-speed conversion will be installed from OGTS with a lightened flywheel and S-10 clutch. Handling will be probably be addressed with 1.5" lower springs, Koni reds and OGTS sway bars. Braking will more than likely be the big stuff from a '75 Manta.
But the motor is what is important in the nearest future. Items that I have on hand include:
- a good block already torn down with minimal wear
- stock crank is in good shape
- Dual side draft manifolds with dual SK DCOE 40's
- a built head, specs include
-- Cam: .488 lift, 295 adv duration (262 @ 0.050), 110 lobe center
-- Valves: 44mm intake, 35mm exhaust, with 11/32" stem size, tapered at seat
-- Titanium springs and Deep titanium retainers (remember the deep part for a later question)
-- RallyBob/Samdog Roller Rockers with stud girdle.
Parts I am not sure about what to choose, where to find,
- 11:1 compression ratio pistons, 3.74", Venolis vs. Arias vs. other?
- 2.2 vs. 2.0
- if 2.2, then should I start the search for an Opel 2.2 crank or have my 1.9 crank stroked
- recommended supplier of flat titanium retainers that don't interfere with roller rockers.
- are the dual 40's going to be "enough" for the RPM's that the cam require
Does anyone out there have parts that I am looking for (crank, pistons, retainers). My preference is to purchase from other OGT.com members, then OGTS, then direct from suppliers.
Any insight, recommendations, corrections appreciated.
Brian
The Street Sweeper name just came to me as I was trying to find a subject for this thread. Expectations include a motor that can provide enough juice so that the GT can keep up (150 -175 HP), retain at least a little bit of streetability (to get to and from cruises and the track). It must rev quickly, and run on 93 octane (the best available in the area). A 5-speed conversion will be installed from OGTS with a lightened flywheel and S-10 clutch. Handling will be probably be addressed with 1.5" lower springs, Koni reds and OGTS sway bars. Braking will more than likely be the big stuff from a '75 Manta.
But the motor is what is important in the nearest future. Items that I have on hand include:
- a good block already torn down with minimal wear
- stock crank is in good shape
- Dual side draft manifolds with dual SK DCOE 40's
- a built head, specs include
-- Cam: .488 lift, 295 adv duration (262 @ 0.050), 110 lobe center
-- Valves: 44mm intake, 35mm exhaust, with 11/32" stem size, tapered at seat
-- Titanium springs and Deep titanium retainers (remember the deep part for a later question)
-- RallyBob/Samdog Roller Rockers with stud girdle.
Parts I am not sure about what to choose, where to find,
- 11:1 compression ratio pistons, 3.74", Venolis vs. Arias vs. other?
- 2.2 vs. 2.0
- if 2.2, then should I start the search for an Opel 2.2 crank or have my 1.9 crank stroked
- recommended supplier of flat titanium retainers that don't interfere with roller rockers.
- are the dual 40's going to be "enough" for the RPM's that the cam require
Does anyone out there have parts that I am looking for (crank, pistons, retainers). My preference is to purchase from other OGT.com members, then OGTS, then direct from suppliers.
Any insight, recommendations, corrections appreciated.
Brian